WO2023165761A1

WO2023165761A1 - Separable overvoltage protection device and plug module for a separable overvoltage protection device

Info

Publication number: WO2023165761A1
Application number: PCT/EP2023/051460
Authority: WO
Inventors: Georg Wittmann; Florian GÄCK; Sascha Ludewig; Richard Daum; Sebastian Haas; Juliane KLOSE; Roland Eichenseer
Original assignee: Dehn Se
Priority date: 2022-03-02
Filing date: 2023-01-23
Publication date: 2023-09-07
Also published as: DE102022202134A1

Abstract

The invention relates to a plug module for a separable overvoltage protection device, comprising a housing for accommodating an overvoltage protection circuit, which can be removably inserted into a socket part, a plurality of electrical contacts which are attached to the housing and can be contacted with electrical contacts of the socket part if the housing is inserted into the socket part, and a lifting mechanism with a spindle secured to the socket part, with an actuator designed and arranged to apply a force directed along a longitudinal axis of the spindle and away from the socket part to the housing, with a connection part coupled to the housing, with an actuation part that can be rotated about the longitudinal axis and with a locking mechanism which can be moved, with a rotation of the actuation part about the longitudinal axis, between a locking position in which the locking mechanism securely locks the connection part to the spindle in relation to movement along the longitudinal axis, and a release position in which the locking mechanism decouples the connection part from the spindle, such that the housing can be shifted along the longitudinal axis together with the connection part using the at least one actuator and lifted from the socket part in order to separate the first and the second contacts from one another.

Description

DESCRIPTION

TITLE

DIVIDEABLE OVERVOLTAGE PROTECTION DEVICE AND PLUG-IN MODULE FOR A DIVIDEABLE OVERVOLTAGE PROTECTION DEVICE

TECHNICAL AREA

The present invention relates to a divisible overvoltage protection device and a plug-in module for a divisible overvoltage protection device. In particular, the plug-in module can be lifted off a base part of the overvoltage protection device in order to implement an isolating distance.

TECHNICAL BACKGROUND

Device combinations for protecting electrical networks against overvoltages, which can also be referred to as divisible overvoltage protection devices or devices, typically have a base part and a plug-in module for detachable connection to the base part. In this case, the base part has connection terminals for connection to the electrical network and first contacts which are electrically connected to the connection terminals. Accordingly, the plug-in module comprises second contacts, which are in contact with the first contacts of the base part when the plug-in module is mechanically connected to the base part in a working position.

Such a device combination is disclosed in WO 2020/002295 A1, the plug-in module having a spindle in order to move the plug-in module, starting from a working position in which the contacts of the plug-in module and base part are contacted, into a parking position in which the contacts of Plug-in module and base part are at a distance which corresponds to the necessary electrical separation distance and the required air and creepage distances, but the plug-in module is still held or fixed to the base. The spindle can be rotated about its longitudinal axis by means of a tool and is designed to convert this rotary movement into a linear movement of the plug-in module relative to the base part.

Another divisible overvoltage protection device is disclosed in EP 3 128 624 B1, with a locking mechanism for mechanically locking a plug-in part on the base part being provided in a base part, and with the plug-in part having an unlocking mechanism that can be triggered thermally, for example, which is designed to close the locking mechanism in such a way press so that the lock of the plug-in part on the base part is released.

The possibility of physically separating the contacts of the plug-in module and the base is advantageous, for example, in the event of a defect or during the detection of an aging condition, in order to reliably switch the plug-in module free of voltage, e.g. when certain criteria for the service life of the device have been reached.

DISCLOSURE OF THE INVENTION

It is one of the objects of the present invention to provide improved solutions for isolating a plug-in module, which is detachably connected to a base, of a separable overvoltage protection device.

This object is achieved in each case by a plug-in module having the features of claim 1, by an overvoltage protection device having the features of claim 11 and by an overvoltage protection device having the features of claim 12. Advantageous refinements and developments result from the dependent claims referring back to the independent claims in connection with the description. According to a first aspect of the invention, a plug-in module for a divisible overvoltage protection device is provided. The plug-in module according to the invention comprises a housing for accommodating an overvoltage protection circuit, which can be detachably inserted into a base part, a plurality of first electrical contacts which are attached to the housing and can be contacted with second electrical contacts of the base part when the housing is inserted into the base part, and a lifting mechanism with a spindle that can be fastened to the base part, at least one actuator connected to the housing, which is designed and arranged to apply a force to the housing directed along a longitudinal axis of the spindle in a direction away from the base part, a force coupled to the housing Connecting part, an actuating part rotatable about the longitudinal axis of the spindle and one arranged on the spindle

Locking mechanism movable by rotation of the actuating member about the longitudinal axis between a locking position in which the locking mechanism firmly locks the connector to the spindle with respect to movement along the longitudinal axis and a release position in which the locking mechanism removes the connector from the spindle decoupled, so that the housing, together with the connecting part, can be displaced along the longitudinal axis by the at least one actuator and can be lifted off the base part in order to separate the first and second contacts from one another.

According to a second aspect of the invention, a divisible overvoltage protection device comprises a plug-in module according to the first aspect of the invention and a base part with a receiving recess, electrical connection terminals for connection to an electrical network and a plurality of second electrical contacts which are arranged in the receiving recess and connected to the electrical Connection terminals are electrically connected, wherein the plug-in module can be inserted into the receiving recess of the base part in such a way that the housing is arranged in the receiving recess and the first electrical contacts of the plug-in module are in contact with one another with the second electrical contacts.

One idea on which the invention is based is to provide a plug-in module of a divisible overvoltage protection device with a lifting device which is designed to lift the housing of the plug-in module with the contacts attached to it from the base by means of a lifting mechanism in order to separate the electrical contacts of the plug-in module and base. as soon as a locking device of the lifting mechanism is unlocked. The lifting mechanism uses the force provided by an actuator, such as the biasing force of one or more springs, to instantly and reliably separate the cartridge contacts from those of the socket when the locking mechanism is unlocked.

For this purpose, the lifting mechanism comprises a spindle which can protrude, for example, through a base of the housing of the plug-in module and can be connected or is connected to the base, for example by screwing. When the plug-in module is inserted into the base, the spindle is thus arranged in a fixed position relative to the base. The plug-in module contacts can optionally protrude from the bottom of the housing. The housing generally defines an interior space in which, for example, overvoltage protection circuitry may be housed. The overvoltage protection circuit can have, for example, one or more lightning current arresters and/or overvoltage arresters, such as gas discharge tubes, spark gaps, suppressor diodes, varistors or the like. The actuator can be supported on a structure that is stationary relative to the base, for example on the base itself. The actuator, which can in particular be designed as a passive actuator, applies a force directed away from the base along the longitudinal axis of the spindle to the housing, in particular when the plug-in module or the housing is inserted into the base part. The housing is connected or coupled to a connecting part of the lifting mechanism, it being possible for the connecting part to be locked to the spindle by the locking mechanism, in particular by positive locking. The Locking mechanism can be unlocked by an operating part. The actuating part can be rotated about the longitudinal axis of the spindle and can be designed, for example, as a sleeve or ring enclosing the spindle. When the locking mechanism is unlocked or is moved by the actuating part from the locking position into a release position, the connecting part coupled to the housing is decoupled or unlocked from the spindle. The force applied by the actuator pushes the housing with the contacts attached to it away from the base part along the longitudinal axis of the spindle, so that the housing is moved from a working position with a closed, surge current-carrying electrical connection between the contacts of the plug-in module and the base part to a disconnected position in which the contacts of the plug-in module are separated from the contacts of the base or are arranged at a separation distance. In particular, the separation distance can correspond to a distance which is large enough to maintain the voltage-dependent clearances and creepage distances required between the contacts, for example the necessary distances corresponding to the insulation voltage required at the installation site. For example, the separation distance can be designed for a voltage in a range between 2 kV and 10 kV. Of course, the invention is not limited to this.

An advantage of the invention lies in the fact that the lifting mechanism can set precisely two positions of the plug-in module or the housing of the plug-in module relative to the base module in a binary manner due to the combination of locking mechanism and prestressing by the actuator. This increases the safety of the electrical separation between the contacts. Furthermore, the locking mechanism can be unlocked by rotating the actuating part around the spindle. This achieves a compact structure and facilitates automatic unlocking of the locking mechanism.

According to some embodiments, the actuator can be formed by a spring that biases the housing along the longitudinal axis of the spindle in a direction away from the base part. The spring can, for example, as a Compression spring may be formed, which protrudes over the floor or generally from the housing along the longitudinal axis of the spindle in order to be supported on a structure that is stationary with respect to the base, for example on the base itself. The spring thus biases the housing away from the base along the longitudinal axis of the spindle. The design of the actuator as a spring allows the actuator to be realized with only one component per actuator. This makes assembly easier and increases reliability.

According to some embodiments, the actuator may be a pair of magnets, a first magnet being attachable to the housing and a second magnet being attachable to the base part such that a magnetic pole of the first magnet faces a magnetic pole of the second magnet with the same polarity. The first and second magnets thus repel each other and thereby generate a biasing force directed away from the base. The magnets can be formed by permanent magnets, for example.

According to some embodiments, the plug-in module can have a triggering mechanism kinematically coupled to the actuating part of the lifting mechanism, which can be triggered by an electrical safety circuit and is designed to rotate the actuating part about the longitudinal axis of the spindle in a triggering state triggered by the safety circuit. The safety circuit can generally be designed to detect an electrical defect in the overvoltage protection circuit or other electrical components of the plug-in module and to trigger a switching process, for example to de-energize the overvoltage protection circuit. The triggering mechanism can be actuated or triggered by the switching process, which in turn unlocks the locking mechanism via the actuating part. In the event of a defect, the contacts of the plug-in module and the base are automatically separated. According to some embodiments, it can be provided that the actuating part has an actuating lever extending transversely to the longitudinal axis of the spindle, with the triggering mechanism having an actuating spring, which pretensions the actuating lever of the actuating part for rotation about the longitudinal axis of the spindle, and a transverse to the longitudinal axis of the spindle-extending locking plate with a securing slot, which has a linearly extending first section and a transverse to the first section and a second section extending in a curve around the longitudinal axis of the spindle, wherein a guide pin kinematically coupled to the actuating lever of the actuating part is guided in the securing slot , and wherein the blocking plate can be displaced from a blocking position, in which the guide pin is arranged in the first section of the safety slot and the actuating lever is thus secured against rotation about the longitudinal axis, into a release position by triggering the safety circuit parallel to the extension of the first section, so that the guide pin can be displaced along the second section by a movement of the actuating lever about the longitudinal axis by means of the actuating spring.

Thus, the trigger mechanism can actuate the locking mechanism by releasing a spring-biased actuating lever connected to the actuating member. The actuating lever is kinematically locked via a pin in an approximately L-shaped slot in a locking plate which extends and is movable perpendicularly to the spindle. When the locking plate is displaced perpendicularly to the spindle, the pin is moved out of the short leg of the L-shaped slot and can slide along the long, curved leg. In this way, small tripping distances can be implemented in a simple manner. The movement of the locking plate perpendicular to the spindle also facilitates a space-saving accommodation of the triggering mechanism in the housing. According to some embodiments, the blocking plate can be secured in the blocking position by a bolt that can be actuated with the aid of the safety circuit and can be prestressed in the release position. The bolt can, for example, protrude through a recess in the blocking plate and thereby block a movement of the plate in the prestressing direction.

According to some embodiments, the triggering mechanism can additionally have a carriage that can be actuated by the safety circuit, the bolt being connected to a rotatable shaft which has a triggering lever that can be moved by the carriage. In particular, the shaft can extend parallel to the locking plate and be rotatable about an axis of rotation which runs perpendicular to the longitudinal axis of the spindle. In this case, the locking plate can in particular be prestressed parallel to the axis of rotation. The bolt is disengaged from the locking plate by rotating the shaft about the axis of rotation, for example by moving it out of the recess. In particular, the carriage can be linearly movable parallel to the plate and perpendicular to the axis of rotation of the shaft, for example by a spring, in order to move a lever connected to the shaft and thus rotate the shaft about the axis of rotation. The construction according to these embodiments advantageously facilitates a compact construction of the trigger mechanism. Furthermore, the carriage can be moved by several different electrical switching elements of the safety circuit and/or a separate carriage can be provided for each phase or each electrical path. Correspondingly, each carriage can also have its own lever, which is connected to the shaft, assigned and can be moved by the carriage. It is also conceivable that different slides can act on a common lever. In general, a plurality of carriages and thus a plurality of electrical paths can be arranged in an OR circuit to trigger a rotation of the shaft. That is, actuation of just one of the multiple slides is sufficient to trigger the trigger mechanism. Since a carriage can optionally also be moved by various electrical switching elements of the safety circuit, an additional OR circuit can be implemented to actuate the carriage. According to some embodiments, the electrical safety circuit can have a thermally separable trip. For example, the safety circuit can have one or more of the following circuit components: a fuse, eg a safety fuse with a spring-loaded fuse wire, a gas discharge tube, a thermal trigger, with the two last-mentioned components having a soldered joint melting to trigger the switching process.

According to some embodiments, it can be provided that the locking mechanism has a plurality of locking balls, a ball holder for holding the locking balls, a number of evasion recesses corresponding to the number of locking balls, and a counter bearing connected to the spindle, the evasion recesses and the ball holder being fixed relative to one another by the actuating part can be rotated in order to move the locking mechanism from the locking position to the release position, the locking balls being in engagement with the connecting part and the counter bearing in the locking position and being arranged in alignment with the avoidance recesses in the release position and being decoupled from the counter bearing or the connecting part. According to this principle, positive locking is provided between a counter bearing connected to the spindle in a stationary manner with respect to a movement along the longitudinal axis and the connecting part connected to the housing, with the balls being held in a holding structure. The holding structure and a further locking component, for example the connecting part or the actuating part itself, can be rotated relative to one another by the actuating part in such a way that the balls can escape into deflection recesses formed in the locking component. The locking component can thus be viewed as a further counter bearing. This locking principle facilitates a space-saving design. Due to the locking via locking balls, only low frictional forces occur when unlocking, which further increases the automatic triggering relieved. In particular, due to the low rolling friction of the locking balls, the triggering forces for unlocking can be kept low even with high preload forces.

According to some embodiments, it can be provided that the counter bearing is formed by an inner ring that encloses the spindle, which is connected to the actuating part, can be rotated about the longitudinal axis of the spindle and has an outer peripheral surface with which the locking balls are in contact and which the locking balls in with respect to the longitudinal axis, wherein the ball holder is formed by a ball holder sleeve enclosing the inner ring with openings in which the locking balls are held, and wherein the connecting part is formed by an outer ring enclosing the ball holder sleeve with an inner peripheral surface which is in contact with the locking balls, and a web projecting from the inner peripheral surface, in which the escapement recesses are formed and arranged spaced along the inner peripheral surface, so that when the locking balls are arranged in alignment with the escapement recesses, the outer ring is displaceable along the longitudinal axis. The inner ring and the outer ring can thus be designed according to the principle of an angular contact ball bearing, with the alternative recesses being formed in a shoulder or the web of the outer ring. A shoulder or a web of the inner ring forms the counter bearing.

According to some embodiments, it can be provided that the counter bearing is formed by a keyway of the spindle enclosing the longitudinal axis, wherein the actuating part has a first ring enclosing the spindle with an inner peripheral surface, wherein the escape recesses are formed in the inner peripheral surface and are separated from one another by contact sections of the inner peripheral surface , wherein the connecting part is formed by a second ring surrounding the spindle, which has an end face facing the first ring and a number of guide projections corresponding to the number of locking balls, which protrude from the end face, the ball holder having one of the number number of block pieces corresponding to locking balls, each of which abuts against a locking ball and each of which is arranged between two adjacent guide projections of the second ring, wherein in the locking position the locking balls are arranged in the keyway and the first ring with respect to rotation about the longitudinal axis of the spindle is positioned relative to the second ring such that the block pieces abut the inner peripheral surface of the first ring, and wherein in the release position the first ring is positioned relative to the second ring with respect to rotation about the longitudinal axis of the spindle such that the Block pieces are arranged in alignment with the evasion recesses, so that the locking balls can be moved out of the keyway and the first and second rings can be displaced together along the longitudinal axis of the spindle. The second ring is arranged between the bottom of the housing and the first ring with respect to the longitudinal axis.

According to a further aspect of the invention, a divisible overvoltage protection device comprises a base part with a receiving recess, electrical connection terminals for connection to an electrical network and a plurality of second electrical contacts which are arranged in the receiving recess and electrically connected to the electrical connection terminals, and a plug-in module a housing for accommodating an overvoltage protection circuit and a plurality of first electrical contacts which are attached to the housing, the plug-in module being insertable into the receiving recess of the base part in such a way that the housing is arranged in the receiving recess and the first electrical contacts of the plug-in module are connected to the second electrical contacts are in contact with each other. The overvoltage protection device also includes a lifting mechanism with an electric motor attached to the base part, with a threaded spindle that can be driven by the motor and is rotatably mounted on the base part about a spindle axis of rotation, which has an external thread, and with an internal thread that is connected to the plug-in module and has an external thread that is connected to the external thread of the threaded spindle is engaged, so that by rotating the threaded spindle about the spindle axis of rotation by means of the motor, the plug-in module slidable along the axis of rotation of the spindle and liftable from the base portion to separate the first and second contacts.

One idea underlying this aspect of the invention is to provide a plug-in module of a divisible overvoltage protection device with a lifting device which is designed to separate the electrical contacts of the plug-in module and socket from the housing of the plug-in module with the contacts attached thereto by means of an electromotive lifting mechanism lift off the pedestal. For this purpose, the electric motor drives a threaded spindle in order to lift the housing off the base.

The threaded or drive spindle can, for example, be attached to a floor of the base or protrudes through a floor delimiting the receiving recess of the base and into the receiving recess. The plug-in part has a recess which is surrounded or delimited by the internal thread and into which the drive spindle protrudes. The plug-in module contacts can optionally protrude from the bottom of the housing. The housing generally defines an interior space in which, for example, overvoltage protection circuitry may be housed. The overvoltage protection circuit can have, for example, one or more lightning current arresters and/or overvoltage arresters, such as gas discharge tubes, spark gaps, suppressor diodes, varistors or the like.

One advantage of realizing the lifting mechanism with a threaded spindle and an electric motor lies in the self-locking properties of the threaded spindle. This means that after the plug-in part has been lifted off the housing into the voltage-free position, the plug-in part cannot return to the plug-in position or a position in which the contacts of the plug-in part are in electrical contact with the contacts of the base without rotating the spindle again about the spindle axis of rotation . A further advantage of using an electric motor as an actuator for lifting the plug-in part from the base is that this can be activated automatically in a simple and reliable manner. According to some embodiments, the overvoltage protection device can have a switch which can be triggered by a safety circuit and which, in a closed state triggered by the safety circuit, electrically conductively connects the electric motor to terminals of a voltage source. The safety circuit can be accommodated in the plug-in part, for example. The safety circuit can, for example, comprise a fuse, for example a fuse, a gas discharge tube, a thermal release or the like. When the safety circuit is functionally connected, ie electrically and/or mechanically, for example, to the switch in order to actuate it. The switch completes a circuit to activate the motor. For example, the base part can have additional connections for connection to a supply voltage for the motor, with the switch being arranged between one of these connections and a connection terminal of the motor. Alternatively, it is also conceivable that the connection terminals of the base form the connections of the voltage source.

According to some embodiments, it can be provided that the electric motor is coupled to the threaded spindle via a gear. For example, a drive shaft of the motor can be aligned transversely to the axis of rotation of the spindle. In this case, the thread can have, for example, a worm and at least one gear wheel which meshes with the worm and which is coupled to the threaded spindle directly or via at least one other gear wheel.

BRIEF DESCRIPTION OF THE DRAWINGS

The invention is explained below with reference to the figures of the drawings. From the figures show:

1 shows a perspective view of a divisible overvoltage protection device according to an embodiment of the invention; Fig. 2 is a sectional view of a plug-in module for a divisible

Overvoltage protection device according to an embodiment of the invention;

Fig. 3 is a simplified sectional view divisible

Overvoltage protection device according to an embodiment of the invention, wherein the plug-in module is shown in a working position and a locking mechanism of the plug-in module is shown in a locking position;

4 shows the overvoltage protection device in a sectional view

Fig. 3 showing the pluggable module in a disconnected position and the locking mechanism in a released position;

Fig. 5 is an exploded view of the locking mechanism and a spindle of the Figs. 3 and 4 plug-in module shown;

Fig. 6 is a plan view of a connector forming part

Outer ring of the locking mechanism shown in Figure 5;

7 shows an exploded view of a locking mechanism and a spindle of a plug-in module according to a further exemplary embodiment;

FIG. 8 is a sectional view of that shown in FIG. 7. FIG

locking mechanism and the spindle, wherein view (A) shows the locked position and view (B) shows the released position of the locking mechanism; and

FIG. 9 shows a plan view of the plug-in module from FIG. 2; Fig. 10 is a sectional view of a plug-in module for a separable

Overvoltage protection device according to a further embodiment of the invention; and

FIG. 11 shows a plan view of a lifting mechanism of the overvoltage protection device shown in FIG. 10. FIG.

In the figures, the same reference symbols designate identical or functionally identical components, unless otherwise stated.

DESCRIPTION OF EXEMPLARY EMBODIMENTS

1 shows, schematically and by way of example, a divisible overvoltage protection device 300 which has a plug-in module 100 and a base part or base 200 . The plug-in module 100 can be inserted into the base 200 and can be detachably fastened therein.

As shown by way of example in FIG. 1 , the base 200 has a housing 205 , a receiving recess 210 , a number of electrical connection terminals 215 and a number of electrical contacts 220 . The housing 205 can, for example, be made of an electrically insulating material, in particular a plastic material, and defines the receiving recess 210, for example in the form of an elongate channel with a substantially rectangular cross section, as shown in FIG. 1 by way of example.

The electrical contacts 220 are disposed or exposed in the receiving recess 220 and electrically connected to the terminals 215 . The connection terminals 215 are intended for connection to an electrical network, for example a 3-phase AC network with a neutral conductor and grounding. The plug-in module 100 is also shown only schematically in FIG. 1 and has a housing 1 , electrical contacts 2 and a lifting mechanism 3 with a spindle 30 . Only the spindle 30 of the lifting mechanism 3 is visible in FIG. The lifting mechanism 3 is explained in detail below.

As shown by way of example in Fig. 1, the housing 1 can be formed, for example, as an elongate block or parallelepiped. In general, the housing 1 can have a base 10 , a plurality of side walls 10 extending transversely to the base 10 and a top wall 12 arranged opposite the base 10 . The housing 1 is dimensioned such that it can be inserted or inserted into the receiving recess 210 of the base 200 .

The first electrical contacts 2 of the plug-in module 100 can, for example, be in the form of plug-in contacts which are arranged in the area of the side walls 11 and protrude beyond the base 10, as is shown by way of example in FIG. Alternatively, it is also conceivable for the first contacts 2 to be designed as spring contacts which are arranged on the base 10 and protrude therefrom, e.g. are U-shaped, as is shown in FIGS. 3 and 4 is shown. In general, it can be provided that the first contacts 2 protrude from the bottom 10 of the housing 1 . However, the invention is not limited to this.

When inserted into the receiving recess 210, the housing 1 can be moved by the lifting mechanism 3 from a working position, in which there is a closed, surge current-carrying electrical connection between the contacts 2 of the plug-in module 100 and the contacts 220 of the base part 200, into a disconnected position, in which the contacts 2 of the plug-in module 100 are separated from the contacts 220 of the base 200 or are arranged at a separation distance.

Fig. 2 shows schematically a sectional view of a plug-in module 100. As shown in Fig. 2 by way of example, the housing 1 can define an interior space in which an overvoltage protection circuit 110 and optionally a safety circuit 120 are included. A triggering mechanism 4 that can be triggered by the safety circuit 120 can also be accommodated in the housing 1, which is explained in detail below. As can also be seen in Fig. 2, the spindle 30 protrudes through the base 10 of the housing 1 and a longitudinal axis A30 of the spindle 30, also referred to below as the spindle longitudinal axis A30, extends transversely to the base 10.

The overvoltage protection circuit 110 can have various electrical and/or electronic circuit elements, in particular e.g. The overvoltage protection circuit 110 is designed to implement overvoltage protection, overcurrent protection and optionally a trigger circuit.

The safety circuit 120 can generally be designed to detect an electrical defect in the overvoltage protection circuit 110, in particular an aging condition of the same, or other electrical components of the plug-in module 100 and to trigger a switching process, for example to de-energize the overvoltage protection circuit. The electrical safety circuit 120 can in particular have a thermal trip. For example, the safety circuit 120 can have one or more fuses 121, eg in the form of a fuse, a gas discharge tube, a thermal release or the like. The safety circuit 120 is functionally, eg electrically, connected to the overvoltage protection circuit 110 in such a way that the safety circuit 120 detects or registers an aging state or other states of the overvoltage protection circuit 110 that impair the proper electrical function. Purely by way of example, three scenarios are mentioned in which the safety circuit 120 can trigger: 1. in the event of a short circuit in components of a trigger circuit Overvoltage protection circuit 110 triggers a fuse in safety circuit 120 . 2. If a spark gap wears out and a quenching process is detected at the same time in an associated quenching chamber of the overvoltage protection circuit 110, an indicator of the safety circuit 120 is triggered. 3. In the event of end-of-life, a slide 124 thermally coupled to the overvoltage protection circuit 110 is triggered via a gas discharge tube.

In the figs. 3 and 4 a possible design of the lifting mechanism 3 is shown in section as an example. As in Figs. 3 and 4 as an example, the lifting mechanism 3 comprises the spindle 30, a connecting part 31, an actuating part 32, a locking mechanism 33 and at least one actuator, which is shown in FIGS. 3 and 4 is realized by a spring 35 purely by way of example. The locking mechanism 33 of the shown in Figs. 3 and 4 lifting mechanism 3 shown in Figs. 5 and 6 in detail.

The spindle 30 can be detachably connected to the base 200 . For example, the spindle 30 can have a thread in the area of a first end 30A, which can be screwed to a receptacle 207 of the base 200, as is shown in FIG. 3 by way of example.

3 shows a lifting mechanism 3 with two actuators in the form of springs 35 purely by way of example. The actuators are connected to the housing 1 . However, a different number of actuators is also conceivable. It is also conceivable to implement the at least one actuator not as a spring 35 but, for example, as a pair of mutually repelling magnets, of which one magnet is attached to the housing 1 and one magnet to the base 200 . In the following, purely by way of example, reference is made to an actuator which is implemented by a spring 35 . These statements also apply analogously to a magnet or, in general, to a passive actuator that is designed to exert a force on the housing 1 that is directed away from the base 200 and along the spindle longitudinal axis A30. As shown in FIG. 3, the springs 35 are connected to the housing 1. As shown in FIG. For example, the springs 35 can be fixed in recesses 13 provided on the bottom 10 of the housing 1, as is shown in FIG. 3 by way of example. The springs 35 can be in the form of spiral springs, for example, and can be supported on a structure that is stationary in relation to the base 200 , for example on the bottom of the receiving recess 210 . In the figs. 3 and 4, the dashed line E13 symbolizes a plane in which the structure which is stationary with respect to the base 200 and on which the springs 35 are supported is located. In general, the springs 35 are designed and arranged in such a way that they bias the housing 1 along the spindle longitudinal axis A30 in a direction away from the base part 200 . The prestressing of the housing 1 along the spindle longitudinal axis A30 in the direction away from the base part 200 can advantageously be supported by the contacts 2, for example if they are designed as spring contacts, as shown in FIGS. 3 and 4 as an example.

The connecting part 31 is connected to the housing 1 and can be formed, for example, as an annular part through which the spindle extends. 3 shows purely by way of example that the connecting part 31 can be formed by an outer ring 432 which is also part of the locking mechanism 3 . The connecting part 31 is firmly connected to the housing 1, e.g. glued, welded, pressed into it, screwed into it or fastened to the housing 1 in a similar way. For example, the connecting part 31 can be fixed in a recess 14 in the base 10 of the housing 1, as is shown in FIG. 3 by way of example.

The actuating part 32 is movable relative to the spindle 30, in particular rotatable about the spindle longitudinal axis A30. The actuating part 32 can be designed, for example, as an annular part through which the spindle 30 extends. As shown purely by way of example in FIG. 3 , the actuating part 30 can be implemented as a sleeve 434 , for example. Optionally, the actuating part 30 has a radially or transversely to the spindle longitudinal axis A30 extending lever 32A which, for example, by a screw can be formed, as is shown purely by way of example in FIG.

The locking mechanism 33 is arranged on the spindle 30 and configured to lock the spindle 30 and the connecting part 31 together with respect to a movement along the spindle longitudinal axis A30. 3 shows a locking position of the locking mechanism 33 in which the locking mechanism 33 firmly locks the connecting part 31 to the spindle 30 with respect to movement along the longitudinal axis A30. In Fig. 3 it is shown that the plug-in module 100 is arranged in the working position. Contacts 2 of pluggable module 100 are in physical and electrical contact with contacts 220 of socket 200 and springs 35 bias housing 1 away from socket 200 .

The locking mechanism 33 can be moved or unlocked by rotating the actuating part 32 about the spindle longitudinal axis A30 into an unlocking or release position. In the release position, which is shown in FIG. 4, the locking mechanism 33 decouples the connecting part 31 from the spindle 30. As a result, the connecting part 31 is released with respect to a movement along the spindle longitudinal axis A30. Consequently, the housing 1 together with the connecting part 31 can be displaced along the longitudinal axis A30 by the at least one spring 35 and can be lifted off the base part 200 in order to separate the first and the second contacts 2, 220 from one another, as is shown schematically in Fig. 4 is shown. Provision can optionally be made for the housing 1 to be secured in the disconnected position against movement back into the working position, for example by a securing mechanism (not shown). For example, spring-loaded bolts can be provided in the base part 200 or in the plug-in module 100, which snap into corresponding recesses on the respective other of the base 200 and plug-in module 100 in the disconnected position. The locking mechanism 33 and the spindle 30 of the shown in Figs. The plug-in module 100 shown in FIGS. 3 and 4 are shown together in an exploded view in FIG. As in Figs. 3 to 5 as an example, the locking mechanism 33 can be designed as a ball mechanism, for example. In general, the locking mechanism includes a plurality of locking balls 33A, a ball retainer 33B for holding the locking balls 33A, a number of escape recesses 33C corresponding to the number of locking balls 33A, and a thrust bearing 33D connected to the spindle 30. The principle of this ball mechanism is based on the fact that the locking balls 33A are in the locking position of the locking mechanism 33 with the counter bearing 33D coupled to the spindle 30 and the connecting part 31 and block a movement of the connecting part 33 along the spindle longitudinal axis A30. The structure in which the escape recesses 33C are formed and the ball retainer 33B are rotatable relative to each other by the operating member 32 to move the locking mechanism 33 from the locking position to the releasing position. In the release position of the locking mechanism, the locking balls 33A are arranged in alignment with the deflection recesses 33C. As a result, the locking balls 33A can deviate from the counter bearing 33D or from the connecting part 31 and are thus decoupled from the counter bearing 33D or the connecting part 31 .

As in Figs. 3 to 5 as an example, the counter bearing 33D coupled to the spindle can be formed by an inner ring 430 and the ball holder 33B by a ball holder sleeve 431. The escape recesses 33C can be formed in the connecting part 31, which can be realized, for example, as an outer ring 432, as shown in particular in FIG.

The inner ring 430 encloses the spindle 30 or the spindle 30 protrudes through the inner ring 430, as is shown in FIGS. 3 and 4 is shown. The actuator 32 is connected to the inner ring 430 to rotate the inner ring 430 about the longitudinal axis A30 of the spindle 30 . For example, the inner ring 430 and the actuating part 32 with respect to rotation about the Spindle longitudinal axis A30 be coupled to one another in a form-fitting manner, for example by means of projections and recesses engaging with one another. As in Figs. 3 to 5, the inner ring 430 and the actuating part 32 can be supported with respect to the spindle longitudinal axis A30 on an axial bearing 435 which bears against a collar 30C formed in the region of the second end 30B of the spindle 30.

As can be seen in particular in FIG. 5 , the inner ring 430 has an outer peripheral surface 430a which forms a shoulder or collar 430B at its end facing the actuating part 32 or the second end 30B of the spindle 30 .

The ball holder sleeve 431 has recesses 431A, with a locking ball 33A being accommodated in each recess 431A. The ball retainer sleeve 431 encloses the inner ring 430 so that the locking balls 33A are in contact with the outer peripheral surface 430a of the inner ring 430 and can roll on this. With respect to the spindle longitudinal axis A30, the locking balls 33A are supported by the collar 430B. This is best seen in FIG.

The outer ring 432 forming the connecting part 31 is shown in FIG. 6 in a plan view. As shown in FIG. 6, the outer ring 432 has an inner peripheral surface 432i from which a shoulder or ridge 432A protrudes in the region of an axial end. The escape concavities 33C are formed in the ridge 432A and spaced along the inner peripheral surface 432i as shown in FIG. 6 . As in Figs. 3-5, the outer ring 432 encircles the ball retainer sleeve 431 with the land 432A facing the first end 30A of the spindle 30. As shown in FIG.

In the locking position of the locking mechanism 33, the locking balls 33A are in contact with the inner peripheral surface 432i of the outer ring 432 and are supported in relation to the longitudinal axis A30 of the spindle 30 on the web 432A of the outer ring 432 and on the collar 430B of the inner ring 430, such as this is shown in FIG. When the actuating part 32 or the sleeve 434 is rotated about the spindle longitudinal axis A30, the balls 33A roll on the outer peripheral surface 430a of the inner ring 430 and the inner peripheral surface 432i of the outer ring 432 and thus reach a position in which they are aligned with the deflection recesses 33C are arranged. As a result, the supporting effect of the web 432A of the outer ring 432 is eliminated and the outer ring 432 can move freely along the spindle longitudinal axis A30 in the direction of the second end 30B of the spindle 30, as is shown schematically in Fig. 4, in particular as a result of the springs 35 applied preload force.

FIG. 7 shows another possible design of the spindle 30 and the locking mechanism 33 as a ball mechanism in an exploded view. FIG. 8 shows a sectional view of the spindle 30 from FIG. 7. In FIG. 7 and 8 locking mechanism 33 shown is used.

As shown schematically in FIG. 8 , the counter bearing 33D can be implemented by a keyway 530 which encloses the longitudinal axis A30 of the spindle 30 and is formed in the outer peripheral surface of the spindle 30 .

As further shown in Fig. 7, the operating part 32 can be formed by a first ring 531 having the escape recesses 33C, the connecting part 32 can be formed by a second ring 532, and the ball retainer 33B can be one of the plurality of locking balls 33A have a corresponding number of block pieces 533.

The first ring 531 encloses the spindle 30 or the spindle 30 protrudes through the first ring 531 . Furthermore, the first ring 531 has an inner peripheral surface 531i in which the escape recesses 33C are formed. As shown in FIG. 7, the deflection recesses 33C are spaced apart from one another along the circumference or are separated from one another by abutment sections 531a of the inner circumferential surface 531i. The abutment sections 531a form circle segments, with an alternative recess 33C being located between two adjacent circle segments.

The second ring 532 also encloses the spindle 30 or the spindle 30 protrudes through the second ring 532, as shown schematically in FIG. As also shown in FIG. 7 , the second ring 532 is disposed between the first end 30A of the spindle 30 and the first ring 531 with respect to the longitudinal axis A30 of the spindle 30 . The second ring 532 has an end face 532s which faces the first ring 531 and against which the first ring 531 abuts. Furthermore, a plurality of guide projections 532A, in particular a number corresponding to the number of locking balls 33A, are provided on the end face 532s, which can, for example, be formed in one piece with the second ring 532 and protrude from the end face 532s. As in Figs. 7 and 9, the guide projections 532A are spaced apart from one another along the circumference of the spindle 30, with a block piece 533 being arranged between each two adjacent guide projections 532A.

Each block piece 533 holds a respective detent ball 33A, e.g.

In Fig. 9 and in view (A) in Fig. 8, the locking position of the locking mechanism 33 is shown. The locking balls 33A are received in the keyway 530 of the spindle 30 in the locked position. The actuating part 32 or the first ring 531 is positioned in such a way that each block piece 533 bears against an abutment section 531a of the inner peripheral surface 531i. When a prestressing force F35, which is applied by the springs 35 to the housing 1, acts along the spindle longitudinal axis A30 on the second ring 532 forming the connecting part 31, as a result of the inclined flank of the keyway 530 towards the second end 30B of the spindle 30 Force F30 exerted on the locking balls 33A in the radial direction, ie perpendicular to the spindle longitudinal axis A30. However, as shown in view (A) of Fig. 8, movement of the lock ball 33A and the block piece 533 in the radial direction is locked by the first ring 531 and the abutting portions 531a, respectively.

When the first ring 531 is rotated about the spindle longitudinal axis A30, the deflection recesses 33C reach a position corresponding to the release position, in which they are arranged in alignment with the block pieces 533 and thus with the locking balls 33A. This is shown in view (B) of FIG. The locking balls 33A can be moved out of the keyway 531 by the force F30 acting in the radial direction in order to move the respective block piece 533 into the respective escape recess 33C. Consequently, the first and the second ring 531 , 532 are decoupled from the spindle 30 with respect to a movement along the spindle longitudinal axis A30 and can be displaced together along the longitudinal axis A30 of the spindle 30 by the prestressing force F35.

As in Figs. 5 and 7 by way of example, the actuating part 32 can have a lever 32A in order to rotate the actuating part 32 about the spindle longitudinal axis A30 in order to unlock the locking mechanism 33 . The lever 32A offers a simple possibility, which is described below with reference to FIGS. 2 and 9 to kinematically couple the triggering mechanism 4 explained to the actuating part 32 . Of course, other options for kinematic coupling are also conceivable.

The optional triggering mechanism 4 can be triggered by a switching operation of the safety circuit 120 and is designed to automatically actuate the actuating piece 32 to unlock the locking mechanism 33 . In this way, an automatic physical and electrical separation of the contacts 2, 220 of plug-in module 100 and base part 200 can be achieved when the safety circuit 120 is triggered. For example, the safety circuit 120 a Execute switching operation when it detects a predetermined aging condition of the overvoltage protection circuit 110.

The triggering mechanism 4 is designed to rotate the actuating part 32 about the longitudinal axis A30 of the spindle 30 in a triggering state triggered by the safety circuit 120 . For this purpose, the triggering mechanism 4 can have, for example, an actuating spring 45 for actuating the actuating part 32 and a blocking plate 40 for blocking and releasing a movement of the actuating part 32, as is shown in particular in FIG. Optionally, a shaft 44 can also be provided for releasing and blocking movement of the blocking plate 40 and for coupling to the safety circuit 120, e.g. via a carriage 46, as can be seen in particular in FIG.

The locking plate 40 is shown in a plan view in Figure 9 and may, for example, be rectangular in shape. As shown in Fig. 9, the locking plate 40 is arranged within the housing 1, e.g. in the region of the top wall 12 of the housing 1. The locking plate 40 extends transversely to the longitudinal axis A30 of the spindle 30 and the spindle 30 protrudes through a hole in the locking plate 40 formed recess 40A therethrough as shown in FIG. As is further shown in Fig. 9, the locking plate 40 can be prestressed in a prestressing direction V42 transversely to the longitudinal axis A30 of the spindle 30, e.g. by at least one spring 42 a latch 44A coupled to the shaft 44, the latch 44A protruding through a securing aperture 40B of the locking plate 40. The spring 42 biases the locking plate 40 to a release position.

The locking plate 40 also has a securing slot 41 which has a first section 41A extending linearly and a second section 41B extending transversely to the first section 41A. As shown in Fig. 9, the first section 41 A extends along the prestressing direction V42 or the locking plate 40 is along the direction of extension of the first section 41 A of the securing slot 41 biased. The second section 41 B extends in a curved manner around the longitudinal axis A30 of the spindle 30 or forms a segment of a circle.

The actuating spring 45 biases the actuating member 32, e.g., via the actuating lever 32A, for rotation about the longitudinal axis A30 of the spindle 30. 9 shows purely by way of example that the actuating spring 45 is a compression spring which is supported on the housing 1 . However, other types of springs can also be used as the actuating spring 45 .

The actuating part 32 or the actuating lever 32A is kinematically coupled to a guide pin 43 which is guided in the securing slot 41 of the locking plate 41 . The guide pin 43 can, for example, be attached directly to the actuating lever 32A or, as shown in FIG. The distance between the axis of rotation A5 and the guide pin 43 in this case defines the radius of curvature of the second section 41B of the securing slot 41. The pivot plate 5 is rotatably connected to the operating lever 32A, e.g. via a pin 50, as shown in Fig. 9 by way of example. For example, the pin 50 may be floating in a slot 51 of the operating lever 32A (Fig. 7).

When the lock plate 40 is placed in the locked position, as shown in Figure 9, the guide pin 43 is located in the first portion 41A of the locking slot 41 and the operating lever 32A is thereby secured against rotation about the longitudinal axis A30. When the safety circuit 120 is triggered, the blocking plate 40 is displaced parallel to the extension of the first section 41A into the triggering position. For example, the bolt 44A can be pivoted out of the securing opening 40B of the locking plate 40 and the locking plate 40 can thus be displaced by the spring 42 in the pretensioning direction into the release position. In the release position, the guide pin 43 is located in the second portion 41B of the slot 41. This causes a movement of the actuating lever 32A about the longitudinal axis A30 by means of the actuating spring 45 released and the guide pin 43 is moved along the second portion 41B.

As already explained, the invention is not limited to the kinematic coupling of the guide pin 43 to the actuating part 32 via the swivel plate 5 . Furthermore, other possibilities are also conceivable for releasing the actuating lever 32A or the actuating part 32 preloaded by the actuating spring 45 .

As already explained, the lock plate 40 can be secured in the locked position by the bolt 44A and can be biased in the release position. Latch 44A is generally operable using safety circuit 120 . As in Figs. 2 and 9, latch 44A may be coupled to optional shaft 44. The shaft 44 is rotatable about an axis of rotation A44 which extends transversely to the longitudinal axis A30 of the spindle and preferably parallel to the locking plate 40 . As shown in FIG. 2, the shaft 44 may further include a release lever 44B that projects from the shaft 44 transverse to the axis of rotation A44. The release lever 44B can be pivoted by a slide 46 which can be actuated by the safety circuit 120 . 2 shows the trigger mechanism 4 in the non-triggered or locked state. The carriage 46 can be arranged, for example, in the area of the bottom 10 of the housing 1 and can be guided on the housing 1 . In general, the carriage 46 is slidably guided in a direction transverse to the axis of rotation A44 of the shaft 44 . When the safety circuit 120 trips, the carriage 46 is moved linearly, such as by means of a spring or other actuator (not shown), to pivot the actuating lever 44B and thereby rotate the shaft 44 about the axis of rotation A44. This pivots the latch 44A out of the securing aperture 40B of the locking plate 40 and frees the locking plate 40 for movement to the tripped position. Optionally, it can be provided that the carriage 46 can be actuated by various components of the safety circuit 120, for example by each of the fuses 121 or both by a safety fuse, a solder point that can be melted by a gas discharge tube or similar switching components. Thus, an or Circuitry of the components of the safety circuit 120 in relation to the carriage 46 achieved. Alternatively or additionally, a plurality of levers 44B can also be provided on the shaft 44 and each lever 44B can be assigned its own carriage 46 .

Unless otherwise stated, the components of the locking mechanism 33 and of the triggering mechanism 4 that may be provided are accommodated in the housing 1 of the plug-in module 1 .

An advantage of the invention is that the lifting mechanism 3 biasing the housing 1 of the pluggable module 100 away from the base part 200 and releasably securing the housing 1 to the spindle 30 via the locking mechanism 33 provides reliable and simple physical and electrical disconnection the contacts 2, 220 of plug-in module 100 and socket 200 can take place. This can optionally also take place automatically when a safety circuit 120 is triggered via the triggering mechanism 4, with the safety circuit 120 being able to have electrical components which respond in different ways and which can each trigger the triggering mechanism 4 independently of one another.

FIG. 10 shows another divisible overvoltage protection device 600 in a sectional view. The surge protection device 600 in FIG. 10 differs from the overvoltage protection devices 300 explained above essentially by the lifting mechanism 610. The base part 200 and the plug-in part 100 are designed in a similar way to that explained above. In particular, the plug-in part 1 also has a housing 1 in which a safety circuit 640 and an overvoltage protection circuit 650 are accommodated. Therefore, only the differences are discussed below.

As shown in Fig. 10, the lifting mechanism 610 comprises an electric motor 620, a threaded or drive spindle 630 and an internal thread 643.

Optionally, a gear 650 can also be provided. The electric motor 620 can be a DC motor, for example. Alternatively, the motor 620 can also be designed as an AC motor. The motor 620 has a drive shaft that can be rotated about a motor axis of rotation A620. As shown schematically in FIG. 10, the motor 620 can be accommodated in the housing 205 of the base part 200, for example. Generally, the motor 620 is attached to the base portion 200 .

The threaded spindle 630 has an external thread 633 and is mounted on the base part 200 such that it can rotate about a spindle axis of rotation A630. As shown in FIG. 10 , the threaded spindle 630 protrudes into the receiving recess 210 .

The threaded spindle 630 is kinematically coupled to the motor 620, in particular its drive shaft, and can be driven by it, so that the threaded spindle 630 rotates about the spindle axis of rotation A630. Motor 620 may be coupled to spindle 630 directly or through optional transmission 650, for example. 11 shows, purely by way of example, a transmission 650 with a worm 651, an intermediate wheel 652 and a drive wheel 653. The worm 651 is connected to the drive shaft of the motor 620. The drive wheel 653 is connected to the threaded spindle 630 . The idler gear 652 meshes with the worm 651 and the drive gear 653 . Of course, the drive wheel 653 could also engage directly with the worm 651, or instead of the worm 651 a bevel gear could be provided. In general, it can be provided that the motor axis of rotation A620 extends transversely to the spindle axis of rotation A630.

The housing 1 of the plug-in part 100 has a recess 645 in which the internal thread 643 is formed or arranged. The internal thread 643 can be formed, for example, on a sleeve or nut (not shown), which is accommodated in the recess 645 . The recess 645 can be formed in the base 10 of the housing 1, for example. The external thread 633 of the spindle 630 engages with the internal thread 643. In Fig. 10, the plug-in part 100 is drawn in solid lines in a working position in which there is a closed, surge current-carrying electrical connection between the contacts 2 of the plug-in module 100 and the contacts 220 of the base part 200. The dashed representation of the plug-in part 100 in FIG. 10 shows a disconnected position in which the contacts 2 of the plug-in module 100 are separated from the contacts 220 of the base 200 or are arranged at a separation distance. When motor 620 rotates spindle 630 about spindle axis of rotation A630, plug-in module 100 is displaced along spindle axis of rotation A630 and can thus be lifted off base part 200 or moved from the working position to the disconnected position.

As shown in FIG. 10 , the motor 620 is electrically connected to terminals 644 . The terminals 644 are connected or connectable to a voltage source (not shown). For example, the voltage source may be a direct current source or an alternating current source. For example, it is conceivable that the connections 644 are formed by the connection terminals 215 of the base part 200. The safety circuit 640 is operatively connected to a switch 642, e.g., mechanically and/or electrically, to actuate or trigger the switch 642. If, for example, a defect is detected by the safety circuit 640, it triggers the switch 642 in order to close it and thereby electrically conductively connect the electric motor 620 to the terminals 644. This activates the motor 620 and drives the spindle 630 to lift the male part 100 from the base part 200 .

Although the present invention has been explained above by way of example using exemplary embodiments, it is not limited thereto but can be modified in many different ways. In particular, combinations of the above exemplary embodiments are also conceivable. REFERENCE LIST

1 housing

2 first contacts

3, 610 lifting mechanism

4 trigger mechanism

5 swivel plate

10 floor

11 side walls

12 top wall

13 recesses

14 recess

30 spindle

30A first end of spindle

30B second end of the spindle

30C collar

31 connector

32 operating part

32A operating lever

33 locking mechanism

33A locking balls

33B ball holder

33C evasive recesses

33D counter bearing

35 feathers

40 locking plate

40A recess

40B fuse recess

41 security slot

41 A first section of the security slot

41 B second section of the security slot 42 feathers

43 guide pin

44 wave

44A latch

44B operating lever

45 actuation spring

46 sleds

50 pen

51 slot

100 cartridge

110, 660 overvoltage protection circuit,

120, 640 safety circuit

121 fuses

200 base part

205 housing

207 recording

210 receiving recess

215 terminals

220 second electrical contacts

430 inner ring

430a outer peripheral surface

430B collar

431 ball holder sleeve

431A openings

432 outer ring

432A bridge

432i inner peripheral surface

434 sleeve

435 thrust bearing

531 first ring 531 i inner peripheral surface

531a plant sections

532 second ring

532s face

532A guide projections

533 block pieces

533A opening

620 electric motor

630 lead screw

633 external thread

642 switches

643 internal thread

644 connections

645 recess

650 gear

651 snail

652 intermediate wheel

653 drive wheel

A5 Axis of rotation of the swivel plate

A44 Axis of rotation of the shaft

A30 Longitudinal axis of the spindle

A620 motor axis of rotation

A630 Spindle rotation axis

F30 radial force

F35 preload force

V42 shift direction

Claims

EXPECTATIONS

1 . Plug-in module (100) for a divisible overvoltage protection device (300), having: a housing (1) for accommodating an overvoltage protection circuit (110), which can be detachably inserted into a base part (200); a plurality of first electrical contacts (2) which are attached to the housing (1) and can be contacted with second electrical contacts (220) of the base part (200) when the housing (1) is inserted into the base part (200); and a lifting mechanism (3) with a spindle (30) which can be fastened to the base part (200), at least one actuator which is connected to the housing (1) and is designed and arranged to move along a longitudinal axis (A30) of the spindle (30) to apply force to the housing (1) in a direction away from the base part (200), a connecting part (31) coupled to the housing (1), an actuating part (32) rotatable about the longitudinal axis (A30) of the spindle (30) and one on the spindle (30) arranged locking mechanism (33), which by a rotation of the actuating part (32) about the longitudinal axis (A30) between a

Locking position in which the locking mechanism (33) firmly locks the connector (31) to the spindle (30) with respect to movement along the longitudinal axis (A30) and a release position in which the locking mechanism (33) releases the connector ( 31) is decoupled from the spindle (30), so that the housing (1) together with the connecting part (31) can be displaced along the longitudinal axis (A30) by the at least one actuator and can be lifted off the base part (200) in order to move the first and to separate the second contacts (2, 220) from each other.

2. Plug-in module (100) according to claim 1, wherein the actuator is formed by a spring (35) which prestresses the housing (1) along the longitudinal axis (A30) of the spindle (30) in the direction away from the base part (200), or by a pair of magnets, a first magnet on the housing (1) attached and a second magnet is attachable to the base part (200) such that a magnetic pole of the first magnet faces a magnetic pole of the second magnet with the same polarity.

3. Plug-in module (100) according to claim 1 or 2, additionally comprising: a triggering mechanism (4) coupled kinematically to the actuating part (32) of the lifting mechanism (3), which can be triggered by an electrical safety circuit (120) and is designed to, in one triggered by the safety circuit (120), the actuating part (32) to rotate the longitudinal axis (A30) of the spindle (30).

4. Plug-in module (100) according to claim 3, wherein the actuating part (32) has an actuating lever (32A) extending transversely to the longitudinal axis (A30) of the spindle (30), the triggering mechanism (4) having an actuating spring (45) which biases the actuating lever (32A) of the actuating part (32) for rotation about the longitudinal axis (A30) of the spindle (30), and a locking plate (40) extending transversely to the longitudinal axis (A30) of the spindle (30) and having a securing slot (41 ) having a linearly extending first portion (41A) and a second portion (41B) extending transversely to the first portion (41A) and curved about the longitudinal axis (A30) of the spindle (30), wherein in the securing slot (41) a guide pin (43) kinematically coupled to the operating lever (32A) of the operating part (32) is guided, and wherein the blocking plate (40) moves from a blocking position in which the guide pin (43) is in the first section (41 A) of the securing slot (41) and the actuating lever (32A) is thereby secured against rotation about the longitudinal axis (A30), by triggering the safety circuit (120) being displaceable parallel to the extension of the first section (41 A) into a triggering position, so that the guide pin (43) can be displaced along the second section (41B) by a movement of the actuating lever (32A) about the longitudinal axis (A30) by means of the actuating spring (45).

5. Plug-in module (100) according to claim 4, wherein the locking plate (40) is secured in the locked position by a means of the safety circuit (120) operable bolt (44A) and biased in the release position.

6. Plug-in module (100) according to claim 5, wherein the trigger mechanism (4) additionally comprises a carriage (46) which can be actuated by the safety circuit (120), and wherein the bolt (44A) is connected to a rotatable shaft (44) which has a by the carriage (46) movable release lever (44B).

7. plug-in module (100) according to any one of claims 3 to 6, wherein the electrical safety circuit (120) has a thermally separable trip.

The plug-in module (100) according to any one of the preceding claims, wherein the locking mechanism (33) has a plurality of locking balls (33A), a ball holder (33B) for holding the locking balls (33A), a number corresponding to the number of locking balls (33A). evasion recesses (33C) and a counter bearing (33D) connected to the spindle (30), the evasion recesses (33C) and the ball holder (33B) being rotatable relative to one another by the actuating part (32) in order to disengage the locking mechanism (33) from the to move the locking position into the release position, the locking balls (33A) being in engagement with the connecting part (31) and the counter bearing (33D) in the locking position and being arranged in alignment with the deflection recesses (33C) and from the counter bearing (33D) in the release position or the connecting part (31) are decoupled.

9. Plug-in module (100) according to claim 8, wherein the counter bearing (33D) is formed by an inner ring (430) which encloses the spindle (30) and which is connected to the actuating part (32) about the longitudinal axis (A30) of the spindle ( 30) is rotatable and has an outer peripheral surface (430a) with which the locking balls (33A) are in contact and which supports the locking balls (33A) with respect to the longitudinal axis (A30), the ball holder (33B) being supported by a den The ball holder sleeve (431) enclosing the inner ring (430) has openings (431 A) in which the locking balls (33A) are held, and the connecting part (31) is formed by an outer ring (432) enclosing the ball holder sleeve (431) with a Inner peripheral surface (432i), which is in contact with the locking balls (33A), and a ridge (432A) protruding from the inner peripheral surface (432i), in which the escape recesses (33C) are formed and arranged spaced along the inner peripheral surface (432i), so that when the locking balls (33A) are arranged in alignment with the deflection recesses (33C), the outer ring (432) can be displaced along the longitudinal axis (A30).

10. Plug-in module (100) according to claim 8, wherein the counter bearing (33D) is formed by a keyway (530) of the spindle (30) enclosing the longitudinal axis (A30), wherein the actuating part (32) has a first Ring (531) with an inner peripheral surface (531 i), wherein the escape recesses (33C) are formed in the inner peripheral surface (531 i) and are separated from one another by contact sections (531a) of the inner peripheral surface (531 i), the connecting part (32) being a second ring (532) surrounding the spindle (30), which has an end face (532s) facing the first ring (531) and a number of guide projections (532A) corresponding to the number of locking balls (33A) extending from the end face (532s), wherein the ball holder (33B) has a number of block pieces (533) corresponding to the number of locking balls (33A), each of which abuts against a locking ball (33A) and each of which is between two adjacent guide projections (532A) of the second ring (532), wherein in the locking position the locking balls (33A) are located in the keyway (530) and the first ring (531) is so related to rotation about the longitudinal axis (A30) of the spindle (3) relative to the second ring (532) is positioned such that the block pieces (533) abut the inner peripheral surface (531 i) of the first ring (531), and wherein in the release position the first ring (531) is prevented from rotating about the longitudinal axis (A30 ) of the spindle (3) is positioned relative to the second ring (532) such that the block pieces (531) aligned with the deflection recesses (33C), so that the locking balls (33A) can be moved out of the keyway (531) and the first and second rings (531, 532) can be moved together along the longitudinal axis (A30) of the spindle (30). are.

11 . Separable surge protection device (300), comprising: a plug-in module (100) according to any one of the preceding claims; and a base part (200) with a receiving recess (210), electrical connection terminals (215) for connection to an electrical network and a plurality of second electrical contacts (220) which are arranged in the receiving recess (210) and are connected to the electrical connection terminals (215 ) are electrically connected; wherein the plug-in module (100) can be inserted into the receiving recess (210) of the base part (200) in such a way that the housing (1) is arranged in the receiving recess (210) and the first electrical contacts (2) of the plug-in module (100) are connected to the second electrical contacts (220) are in contact with one another.

12. Separable overvoltage protection device (600), with: a base part (200) with a receiving recess (210), electrical connection terminals (215) for connection to an electrical network and a plurality of second electrical contacts (220) which are in the receiving recess (210 ) are arranged and electrically connected to the electrical connection terminals (215); a plug-in module (100) with a housing (1) for accommodating an overvoltage protection circuit (660) and a plurality of first electrical contacts (2), which are attached to the housing (1), the plug-in module (100) being inserted into the receiving recess ( 210) of the base part (200) can be inserted in that the housing (1) is arranged in the receiving recess (210) and the first electrical contacts (2) of the plug-in module (100) are in contact with one another with the second electrical contacts (220); and a lifting mechanism (610) with an electric motor (620) attached to the base part (200), with a motor (620) drivable, am Base part (200) about a spindle axis of rotation (A630) rotatably mounted threaded spindle (630) which has an external thread (633) and with the plug-in module (100) connected internal thread (643) which with the external thread (633) of the threaded spindle ( 630) is engaged, so that by rotating the threaded spindle (630) about the spindle axis of rotation (A630) by means of the motor (620), the plug-in module (100) can be displaced along the spindle axis of rotation (A630) and can be lifted off the base part (200), to separate the first and second contacts (2, 220) from each other.

13. Overvoltage protection device (300) according to claim 12, additionally comprising: a switch (642) which can be triggered by a safety circuit (640) and which, in a closed state triggered by the safety circuit (640), the electric motor (620) with connections (644) electrically conductively connected to a voltage source.

14. Overvoltage protection device (300) according to claim 12 or 13, wherein the electric motor (620) via a gear (650) is coupled to the threaded spindle (630).