DE102022206195A1 - Low voltage protective switching device - Google Patents

Abstract

The low-voltage protective switching device (1) according to the invention has an insulating material housing (2) and a status display device, which has an actuating element (10) arranged on an outside of the insulating material housing (2) and movable between a first position and a second position, and at least one inside the insulating material housing (2) has a stationary first light source. The actuating element (10) has a first light-conducting section (11) with a first radiation surface (12) and a first exit surface (13). In the first position of the actuating element (10), the first irradiation surface (12) is arranged directly adjacent to the first light source, with the first exit surface (13) being visible from the outside. The status display, i.e. the status display device, is thus integrated into the actuating element (10). This leads to a reduction in the number of components, which in turn requires less installation space inside the insulating material housing (2). This significantly simplifies the packaging, i.e. the arrangement of the individual assemblies and components inside, which means that further functionalities can be integrated into the protective switching device.

Description

The invention relates to a low-voltage protective switching device with an insulating material housing and a status display device for displaying the current operating state of the low-voltage protective switching device.

The term “low voltage” refers to electrical voltages of up to 1000 volts alternating voltage or up to 1500 volts direct voltage. In particular, this refers to voltages that are greater than the extra-low voltage - with values of up to 50 volts alternating voltage or up to 120 volts direct voltage.

The term “low-voltage circuit” or “low-voltage network” or “low-voltage system” refers to circuits with nominal currents or rated currents of up to 125 amperes, more specifically up to 63 amperes. In particular, this refers to circuits with nominal currents or rated currents of up to 40 amps, 32 amps, 25 amps, 16 amps or 10 amps. The current values mentioned refer in particular to nominal, rated and/or switching off currents, i.e. the current which is normally carried through the circuit at the maximum or at which the electrical circuit is usually interrupted, for example by a protective device such as a protective switching device. Circuit breaker or residual current circuit breaker.

Electromechanical protective switching devices - for example circuit breakers, circuit breakers, residual current circuit breakers and arc or fire protection switches - are used to monitor and protect an electrical circuit and are used in particular as switching and safety elements in electrical energy supply and distribution networks. To monitor and protect the electrical circuit, the protective switching device is electrically connected via two or more connection terminals to an electrical line of the circuit to be monitored in order to interrupt the electrical current in the respective monitored line if necessary. For this purpose, the protective switching device has at least one switching contact, which can be opened when a predefined condition occurs - for example when a short circuit or a fault current is detected - in order to isolate the monitored circuit from the electrical line network. Such protective switching devices are also known as series-mounted devices in the field of low-voltage technology.

Circuit breakers are specifically designed for high currents. A circuit breaker (so-called LS switch), which is also known as a “miniature circuit breaker” (MCB), represents a so-called overcurrent protection device in electrical installations and is used in particular in the area of low-voltage networks. Circuit breakers and circuit breakers guarantee safe switching off in the event of a short circuit and protect consumers and systems from overload, for example from damage to the electrical cables due to excessive heating as a result of an excessively high electrical current. They are designed to automatically switch off a circuit to be monitored in the event of a short circuit or an overload and thus isolate it from the rest of the line network. Circuit breakers and circuit breakers are therefore used in particular as switching and safety elements for monitoring and securing an electrical circuit in electrical energy supply networks. Circuit breakers are from the literature DE 10 2015 217 704 A1 , EP 2 980 822 A1 , DE 10 2015 213 375 A1 , DE 10 2013 211 539 A1 or EP 2 685 482 B1 in principle already known.

To interrupt a single phase line, a single-pole circuit breaker is usually used, which usually has a width of one pitch unit (corresponds to approx. 18mm). For three-phase connections, three-pole circuit breakers are used (as an alternative to three single-pole switching devices), which have a width of three pitch units (corresponds to approx. 54mm). Each of the three phase conductors is assigned a pole, i.e. a switching point. If the neutral conductor is to be interrupted in addition to the three phase conductors, one speaks of four-pole devices, which have four switching points: three for the three phase conductors and one for the common neutral conductor.

There are also compact circuit breakers which, with a housing width of only one division unit, provide two switching contacts for each connection line, i.e. either for two phase lines (compact line circuit breaker of type 1+1) or for one phase line and the neutral conductor (compact line circuit breaker of type 1+N). . Such compact protective switching devices in a narrow design are, for example, from the publications DE 10 2004 034 859 A1 , EP 1 191 562 B1 or EP 1 473 750 A1 in principle already known.

A residual current circuit breaker is a protective device to ensure protection against a dangerous residual current in an electrical system. Such a fault current - which is also referred to as a differential current - occurs when a live line part has electrical contact with earth. This is the case, for example, when a person touches a live part of an electrical system: in this case the current flows as a residual current through the person's body towards grounding. To protect against such body currents, the residual current circuit breaker must quickly and safely disconnect all poles of the electrical system from the line network when such a residual current occurs. In general usage, instead of the term “residual current circuit breaker”, the terms FI circuit breaker (in short: FI switch), residual current circuit breaker (in short: DI switch) or RCD (for “Residual Current Protective Device”) are used equivalently.

To detect such a fault or differential current, the magnitude of the current in a line leading to an electrical consumer, for example a phase line, is compared with the magnitude of the current in a line leading back from the electrical consumer, for example a neutral conductor, using a so-called summation current transformer . This has a ring-shaped magnetic core through which the primary conductors (electrical lines leading back and forth) are passed. The magnetic core itself is wrapped with a secondary conductor or a secondary winding. In the fault-current-free state, the sum of the electrical currents flowing to the consumer is equal to the sum of the electrical currents flowing back from the consumer. If the currents are added vectorially, i.e. directional or with a sign, it follows that the signed sum of the electrical currents in the forward and return lines in the fault-current-free state is equal to zero: no induction current is induced in the secondary conductor. In contrast, in the case of a fault or differential current that flows towards earth, the sum of the electrical currents flowing to or from the current transformer is not equal to zero. The resulting current difference causes a voltage proportional to the current difference to be induced on the secondary winding, causing a secondary current to flow in the secondary winding. This secondary current serves as a residual current signal and, when a predetermined value is exceeded, leads to the protective switching device being triggered and, as a result - by opening the at least one switching contact of the protective switching device - to the correspondingly fused circuit being switched off.

In the case of residual current circuit breakers, a distinction is also made between mains voltage-dependent and mains voltage-independent device types: while mains voltage-dependent residual current circuit breakers have control electronics with a trigger, which is dependent on an auxiliary or mains voltage to fulfill their function, mains voltage-independent residual current circuit breakers do not require an auxiliary or mains voltage to implement the triggering function, but rather have To implement mains voltage-independent tripping, a slightly larger summation current transformer is usually used, which means that a larger induction current can be generated in the secondary winding.

Arc or fire protection switches are used to detect arc faults that can occur at a defective point on an electrical cable - for example a loose cable clamp or due to a cable break. If the arc fault occurs electrically in series with an electrical consumer, the normal operating current is usually not exceeded because it is limited by the consumer. For this reason, the arc fault is not detected by a conventional overcurrent protection device, such as a fuse or a circuit breaker. To determine whether an arc fault is present, the fire protection switch measures both the voltage curve and the current curve over time and analyzes and evaluates them with regard to the curves characteristic of an arc fault. In the (English-language) specialist literature, such protective devices for detecting arc faults are referred to as “Arc Fault Detection Devices” (abbreviated: AFDD). The term “Arc Fault Circuit Interrupter” (abbreviated: AFCI) is common in North America.

There are also device designs in which the functionality of a residual current circuit breaker is combined with the functionality of a circuit breaker: such combined protective switching devices are referred to in German as FI/LS or in English-speaking countries as RCBO (for Residual current operated Circuit-Breaker with Overcurrent protection). . Compared to separate residual current and circuit breakers, these combination devices have the advantage that each circuit has its own residual current circuit breaker: Normally a single residual current circuit breaker is used for several circuits. If a fault current occurs, all protected circuits are switched off. By using RCBOs, only the affected circuit is switched off.

The latest development concerns circuit breakers, which have a semiconductor-based electronic interruption unit, ie the electrical current flow of the low-voltage circuit is routed via semiconductor components or semiconductor switches, which either control the electrical interrupt the flow of current or can be made conductive to enable the flow of electrical current. Such semiconductor-based protective switching devices are also referred to as “Solid State Circuit Breakers,” or SSCB for short. Semiconductor-based protective switching devices interrupt the electrical current carried over the circuit almost immediately, within ps, in the sense of a switch-off process. The shutdown criteria required to initiate a shutdown process - for example in the event of a short circuit, an electrical overload or an arc fault - are usually based on the determination and evaluation of the actual current value carried across the circuit.

What all of these types of protective switching devices have in common is that they have an actuating element on the outside of the housing with which the respective protective switching device can be switched on or off by hand. In other words: by actuating the actuating element, the current flow of the circuit monitored with the help of the respective protective switching device is interrupted or guaranteed. The switching state of the protective switching device can be recognized by the position of the actuating element. If several triggering events - for example a short circuit, an electrical overload or the occurrence of an arc fault - can lead to an interruption of the secured circuit, the reason for the tripping should also be displayed in addition to the switching status of the protective switching device. Some protective switching devices have a status display for this purpose, which is placed on the outside of the housing in a place that is visible to an observer when installed. However, particularly in the case of compact protective switching devices, such status displays are accompanied by restrictions in the design of the internal structure of the switching device due to the space required for this. Furthermore, openings in the outside of the housing of a protective switching device must be protected against environmental influences such as dirt or moisture in order not to impair the functionality of the protective switching device.

It is therefore the object of the present invention to provide an alternative option for a status display for a protective switching device which overcomes or at least improves the disadvantages mentioned above.

This object is achieved according to the invention by the low-voltage protective switching device according to claim 1. Advantageous embodiments of the low-voltage protective switching device according to the invention are the subject of the dependent claims.

The low-voltage protective switching device according to the invention has an insulating material housing and a status display device, which has an actuating element arranged on an outside of the insulating material housing and movable between a first position and a second position, and at least one first light source arranged in a stationary manner within the insulating material housing. The actuating element has a first light-conducting section with a first radiation surface and a first exit surface. In the first position of the actuating element, the first irradiation surface is arranged directly adjacent to the first lighting means, with the first exit surface being visible from the outside.

The term “low-voltage protective switching device” includes series-mounted devices, such as the circuit breakers or residual current circuit breakers described in the introduction. These have an actuating element which can be manually actuated between a first position and a second position in order to switch the protective switching device on or off by hand.

With the help of the status display device, the status display of the low-voltage protective switching device is integrated into the actuating element. In this way, less installation space is required inside the insulating material housing, which means that packaging, i.e. the arrangement of the individual assemblies and components of the protective switching device inside the insulating material housing - especially in the case of compact protective switching devices - is significantly facilitated, whereby further functionalities can be integrated into the protective switching device.

Furthermore, fewer components are required for the design of the status display device according to the invention due to the integration into the actuating element, which on the one hand benefits the space problem and on the other hand reduces component, storage and logistics costs. In addition, no openings or breakthroughs are required on the outside of the housing, so that the resulting effort for sealing is eliminated in order to meet the requirements for the protection class of the respective protective switching device.

In an advantageous development of the low-voltage protective switching device, the insulating material housing has a front side, a fastening side opposite the front side, and narrow and broad sides connecting the front side and the fastening side, the actuating element being rotatably mounted in the insulating material housing about an axis of rotation oriented in the normal direction of the broad sides is.

In a further advantageous development of the low-voltage protective switching device, the actuating element is arranged on the front of the insulating material housing.

In addition to actuating elements that can be moved in a longitudinal direction, the rotatable mounting of the actuating element represents an easy-to-implement alternative. Arranging the actuating element on the front side opposite the fastening side ensures that the actuating element is easy to operate in the assembled state.

In a further advantageous development of the low-voltage protective switching device, the first lamp is designed as a multi-colored lamp.

A “multi-colored lamp” means that the lamp can take on several color states, which can be controlled individually. For example, the multicolor lamp, for example a multicolor LED, can emit either a red tone or a yellow tone depending on the control. In this way, different states, e.g. different triggering states of the protective switching device such as a short circuit or an electrical overload, can be displayed in the first position of the actuating element.

In a further advantageous development of the low-voltage protective switching device, the actuating element has a further light-conducting section with a further exit surface, which is visible from the outside in the second position of the actuating element.

In the second position of the actuating element, the further exit surface is therefore visible, i.e. visually perceptible to an observer looking at the switching device from outside, while the first exit surface, which is visible in the first position of the actuating element, is covered by the insulating material housing in the second position and is therefore no longer visible to an observer looking at the switching device. Accordingly, the further exit surface is covered by the insulating material housing in the first position of the actuating element and is therefore not visible to the observer. In this way, both switching states of the actuating element can be visually displayed to an observer looking at the switching device from outside, with either one or the other switching state, but not both switching states, being able to be displayed at the same time.

In a further advantageous development of the low-voltage protective switching device, the further light-conducting section has a further irradiation surface, which is arranged offset from the first irradiation surface.

In this way - depending on the switching position of the actuating element, i.e. depending on whether the actuating element is in the first position or in the second position - a common light source arranged stationary in the insulating material housing can be used to “serve” both irradiation surfaces, i.e. to illuminate.

In a further advantageous development of the low-voltage protective switching device, the further light-conducting section has a further irradiation surface which at least partially overlaps with the first irradiation surface. This significantly increases the number of design options for the actuating element with the light-conducting sections integrated therein.

In a further advantageous development of the low-voltage protective switching device, the status display device has a second illuminant which is arranged within the insulating material housing, such that in the second position of the actuating element, the first and/or the second irradiation surface is arranged directly adjacent to the second illuminant.

The second position of the actuating element is characterized by the fact that only the further exit surface is visible from the outside. The use of a second lamp allows a flexible design of the actuating element with the light-conducting sections integrated therein.

In a further advantageous development of the low-voltage protective switching device, the second lamp is designed as a multi-colored lamp.

The term “multi-colored lamp” means that the respective lamp can take on several color states, for example red or yellow. A multi-color LED, for example, can be considered as a light source for this purpose. In this way, with one and the same switch position of the actuating element, i.e. either in the first position or in the second position, several states of the low-voltage protective switching device, for example a trip due to a short circuit or an electrical overload, can be indicated, i.e. displayed.

• 1 und 2 schematische Darstellungen eines aus dem Stand der Technik bekannten Niederspannungs-Schutzschaltgerätes in verschiedenen Ansichten;
• 3 eine schematische Darstellung eines ersten Ausführungsbeispiels des erfindungsgemäßen Schutzschaltgerätes;
• 4 eine schematische Detaildarstellung des erfindungsgemäßen Betätigungselements zu 3;
• 5 und 6 schematische Darstellungen der Schaltzustände des Betätigungselements nach 3 und 4;
• 7 und 8 schematische Darstellungen der Schaltzustände des Betätigungselements gemäß einem zweiten Ausführungsbeispiel;
• 9 und 10 schematische Darstellungen der Schaltzustände des Betätigungselements gemäß einem dritten Ausführungsbeispiel;
• 11 und 12 schematische Darstellungen der Schaltzustände des Betätigungselements gemäß einem vierten Ausführungsbeispiel.

Below are exemplary embodiments of the low-voltage protective switching device Explained in more detail with reference to the attached figures. In the figures are:

• 1 and 2 schematic representations of a low-voltage protective switching device known from the prior art in various views;
• 3 a schematic representation of a first exemplary embodiment of the protective switching device according to the invention;
• 4 a schematic detailed representation of the actuating element according to the invention 3 ;
• 5 and 6 schematic representations of the switching states of the actuating element 3 and 4 ;
• 7 and 8th schematic representations of the switching states of the actuating element according to a second exemplary embodiment;
• 9 and 10 schematic representations of the switching states of the actuating element according to a third exemplary embodiment;
• 11 and 12 schematic representations of the switching states of the actuating element according to a fourth exemplary embodiment.

In the various figures of the drawing, the same parts are always provided with the same reference numerals. The description applies to all drawing figures in which the corresponding part can also be recognized.

In the 1 and 2 is a low-voltage protective switching device 1 known from the prior art, more precisely: a residual current circuit breaker, shown schematically in various views. With a width (B) of two division units (TE), the low-voltage protective switching device 1 has an insulating material housing 2 with a front side 3, a fastening side 4 opposite the front side 3, and narrow sides 5 and broad sides 6 connecting the front side and the fastening side 3, 4 on. 1 shows a view of the front 3, 2 a perspective oblique view of the low-voltage protective switching device 1.

In the head area of the front 3 there is an actuating element 10 for manual actuation of the low-voltage protective switching device 1, with the help of which the low-voltage protective switching device 1 can be manually operated, ie switched on and off. For this purpose, the actuating element 10 can switch between a first position, the ON position (see 1 and 2 ) and a second position, the OFF position, can be moved back and forth by hand. In addition to the actuating element 10, the insulating material housing 2 has two small display openings 8 to display the operating state of the low-voltage protective switching device 1 - for example whether the low-voltage protective switching device 1 has been triggered due to a short circuit, an electrical overload or a fault current. This display is usually realized by means of suitable lighting means, which are arranged behind the display openings - either directly or by means of light guides - in the insulating material housing 2.

Furthermore, a test button 7 is arranged in the head area of the front 3 directly below the actuating element 10, with the help of which the functionality of the tripping can be checked in the event of an earth fault current. In a lower shoulder area of the front 3, two clamping screws 9 can also be seen, with the help of which external electrical connection conductors (not shown) can be securely connected to the low-voltage protective switching device 1 in an electrically conductive manner.

3 shows schematically a first exemplary embodiment of the low-voltage protective switching device 1 according to the invention.

This is again a residual current circuit breaker with an insulating material housing 2 with a width B of two division units, the basic structure of which essentially corresponds to that of the low-voltage protective switching device 1 described above. In contrast to that in 1 shown, known from the prior art, the low-voltage protective switching device 1 according to the invention, however, no longer has any display openings formed in the front 3. Instead, a status display device for displaying the respective operating status of the low-voltage protective switching device 1 is integrated into the actuating element 10.

In 4 The actuating element 10 according to the invention is therefore shown schematically in a detailed representation. The actuating element 10 has a roller-shaped base body 14, which is rotatably mounted in the insulating material housing 2, the axis of rotation of the base body 14 being oriented in the normal direction of the broad sides 6. An operating handle 15 is formed on the base body 14 in a radially projecting manner. The actuating element 10 can be manually operated between the first position (ON position) and the second position (OFF position) via the operating handle 15.

Furthermore, a first light-conducting section 11 is integrated into the base body 14 of the actuating element 10, which has a first radiation surface 12 and a first exit surface 13. Inside the insulating material housing 2 is a first light source 20 (see 5 and 6 ), at for example a light-emitting diode, arranged in a stationary manner. The actuating element 10 is located as in 3 shown in the first position, the first irradiation surface 12 comes to lie directly next to the first lamp, so that light emitted by the first lamp can be coupled into the first light-conducting section 11 via the first irradiation surface 12. The first exit surface 13 is located in the in 3 position shown, so that it is visually clearly perceptible to a viewer looking at the front 3.

However, if the actuating element 10 is in the second position (OFF position, in 3 If the operating handle 15 were moved in the direction of the test button 7), the first irradiation surface 12 is no longer arranged directly adjacent to the first lamp, so that no light can be coupled into the first light-conducting section 11 via the first lamp. Furthermore, the first exit surface 13 is not visible to an observer looking at the front side 3, since in this position it is covered by parts of the insulating material housing 2, more precisely: by the lower head area of the front side 3.

For better information transmission, the exit surface 13 can also be printed with a symbol that matches the position of the actuating element 10. It is also possible to use a multicolored light source, for example a multicolor LED, as the first light source, which can assume several color states in order to be able to display different (triggering) states of the low-voltage protective switching device 1 in the first position of the actuating element 10.

In the 5 and 6 is that in 4 Perspective illustrated actuating element 10 in its position in the insulating material housing 2 abstracted in different switching positions, each shown schematically in a side view. 5 shows actuating element 10 in the first position (ON position), 6 in the second position (OFF position).

The first lamp 20 is arranged in a stationary manner in the insulating material housing 2 and is located in the in 5 shown first position of the actuating element 10 in the immediate vicinity of the first irradiation surface 12 of the first light-conducting section 11. As soon as the first light source 20 emits light, it is guided via the first light-conducting section 11 to the first exit surface 13 and emitted there, so that it is from one of can be visually perceived by observers looking outside at the front 3.

However, if the actuating element 10 is in the in 6 shown second position, the first irradiation surface 12 is no longer in the immediate vicinity of the first lamp 20, which is why light emitted by the first lamp 20 cannot be coupled into the first light-conducting section 11. Furthermore, the first exit surface 13 is no longer visually perceptible by an observer looking at the front side 3, since due to the rotation of the actuating element 10 about its axis of rotation D in the clockwise direction, the first exit surface 13 now comes to lie behind the front side 3 of the insulating material housing 2 and thereby - regardless of whether light is coupled into the first light guide 11 - is no longer perceptible from the outside.

In the 7 and 8th a second exemplary embodiment of the actuating element 10 of the low-voltage protective switching device 1 according to the invention is shown schematically. The 7 and 8th show - analogous to the representations of 5 and 6 - the actuating element 10 in two different switching positions: the first position (ON position) is in 7 , the second position (OFF position) in 8th shown.

In contrast to the first exemplary embodiment, the actuating element 10 has a second light-conducting section 21 that is different from the first light-conducting section 11 and whose irradiation surface coincides with the first irradiation surface 12. The second light-conducting section 21 has a second exit surface 23, which is shown in FIG 7 The first position shown (ON position) is covered by the front side 3 of the insulating material housing 2, in the in 8th shown second position (OFF position) is visually perceptible by an observer looking from the outside at the front 3 due to the changed rotational position of the actuating element 10. To be in the in 8th In order to be able to couple visible light into the second light-conducting section 21 in the rotational position shown (second position, OFF position), the low-voltage protective switching device 1 has a second lamp 30, which is arranged in a stationary manner in the insulating material housing 2 in such a way that the first irradiation surface 12 is in the second position of the actuating element 10 is in the immediate vicinity of the second lamp 30, see 8th . The first exit surface 21 is covered in the second position by the front side 3 of the insulating material housing 2, so that it is not optically perceptible to an observer looking at the front side 3 from the outside.

It is not absolutely necessary that the irradiation surfaces of the first light-conducting section 11 and the second light-conducting section 21 coincide. According to the invention, it would also be possible for the second light-conducting section 21 to have its own second irradiation surface that is spatially separated from the first irradiation surface 11. The 9 and 10 show a third exemplary embodiment in which the second light-conducting section 21 also has its own irradiation surface, the second irradiation surface 22, which is spatially separated from the first irradiation surface 12.

In addition, it is possible that only a single illuminant is required, which couples light both into the first light-conducting section 11 via the first irradiation surface 12 and into the second light-conducting section 21 via the second irradiation surface 22. For this purpose, only the spatial position of the first irradiation surface 12 in the first position of the actuating element 10 would have to match the spatial position of the second irradiation surface 22 in the second position of the actuating element 10 in order to direct the light via the respective irradiation surface 12 or 22 into the first or to couple in the second light-conducting section 11 or 21. In the 11 and 12 a fourth exemplary embodiment of the actuating element 10 is shown schematically. The two light-conducting sections 11 and 21 are arranged one behind the other along the axis of rotation D of the roller-shaped base body 14, ie the first light-conducting section 11 runs in the illustrations 11 and 12 at least in the central area in front of the second light-conducting section 21. The first and second radiation surfaces 12, 22 as well as the first and second exit surfaces 13, 23 can run in the direction of the axis of rotation D over the entire width of the roller-shaped base body 14.

With the help of the actuating element 10, additional status indicators can be displayed on the front 3 of a low-voltage protective switching device 1 in addition to the mechanical device status indicators ON and OFF, which can be read from the position of the actuating element 10, by means of light signals that can be displayed on the front 3. These status displays, which are implemented by means of a light guide integrated into the base body of the actuating element 10, are integrated into the front of the device, which ensures the tightness of the low-voltage protective switching device 1.

In contrast to an arrangement of one or more lamps inside the insulating material housing 2 in order to display a light signal directly or indirectly by means of assigned light guides via an opening in the front 3, fewer components and assembly steps are required in the arrangement according to the invention, which on the one hand Manufacturing costs are reduced and, on the other hand, the packaging, i.e. the arrangement of the components inside the insulating material housing 2, is significantly facilitated. The effort that would be associated with sealing additional housing openings can also be eliminated if the respective protection class is adhered to.

In the actuating element 10 according to the invention, the geometry and structure of the original actuating element can be used, into which light-conducting elements are integrated. Any necessary light deflections inside the actuating element 10 can be implemented using prisms or other suitable contours. Alternatively, the entire actuating element 10 itself can be designed as a light-conducting element.

Reference symbol list

1

Low-voltage series-mounted device

2

Insulated housing

3

Front

4

Fastening side

5

narrow side

6

Broadside

7

Test button

8th

Display opening

9

clamping screw

10

Actuator

11

first light-conducting section

12

first radiation surface

13

first exit surface

14

Basic body

15

Operating handle

20

first light source

21

second light-conducting section

22

second radiation surface

23

second exit surface

30

second light source

b

Width

D

Axis of rotation

TE

Division unit

QUOTES INCLUDED IN THE DESCRIPTION

This list of documents listed by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 102015217704 A1 [0005]
• EP 2980822 A1 [0005]
• DE 102015213375 A1 [0005]
• DE 102013211539 A1 [0005]
• EP 2685482 B1 [0005]
• DE 102004034859 A1 [0007]
• EP 1191562 B1 [0007]
• EP 1473750 A1 [0007]

Claims (9)

Low-voltage protective switching device (1), - with an insulating material housing (2) and - with, a status display device, which has an actuating element (10) arranged on an outside of the insulating material housing (2) and movable between a first position and a second position, and at least one first light source arranged in a stationary manner within the insulating material housing (2), - wherein the actuating element (10) has a first light-conducting section (11) with a first radiation surface (12) and a first exit surface (13), - wherein in the first position of the actuating element (10), the first irradiation surface (12) is arranged immediately adjacent to the first lighting means (20), the first exit surface (13) being visible from the outside. Low-voltage protective switching device (1). Claim 1 , wherein the insulating material housing (2) has a front side (3), a fastening side (4) opposite the front side (3), and narrow and broad sides (5, 6) connecting the front side and the fastening side (3, 4), whereby the actuating element (10) is mounted in the insulating material housing (2) so that it can rotate about an axis of rotation (D) oriented in the normal direction of the broad sides (6). Low-voltage protective switching device (1). Claim 2 , wherein the actuating element (10) is arranged on the front side (3) of the insulating material housing (2). Low-voltage protective switching device (1) according to one of the preceding claims, wherein the first lamp (20) is designed as a multi-colored lamp. Low-voltage protective switching device (1) according to one of the preceding claims, wherein the actuating element (10) has a further light-conducting section with a further exit surface, which is visible from the outside in the second position of the actuating element (10). Low-voltage protective switching device (1). Claim 5 , wherein the further light-conducting section has a further irradiation surface, which is arranged offset from the first irradiation surface. Low-voltage protective switching device (1). Claim 5 , wherein the further light-conducting section has a further irradiation surface which at least partially overlaps with the first irradiation surface. Low-voltage protective switching device (1) according to one of the Claims 5 until 7 , wherein the status display device has a second illuminant which is arranged within the insulating material housing (2), such that in the second position of the actuating element (10), the first and / or the second irradiation surface (12) is immediately adjacent to the second illuminant (20 ) is arranged. Low-voltage protective switching device (1). Claim 8 , wherein the second lamp is designed as a multi-colored lamp.

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