EP3016122B1 - Multi-pole switch fuse assembly for busbar systems - Google Patents

Description

The present invention relates to a multi-pole switch fuse arrangement for busbar systems with at least two switch fuse units, each of which can accommodate a fuse, wherein the switch fuse assembly comprises a contact device for busbars.

Such switch fuse arrangements are used in particular for the protection of three-phase circuits, in particular 3-pole switch fuses arrangements are used.

Such a switch fuse arrangement is for example from the EP 2 584 577 B1 known.

The document WO 01/11642 A1 relates to a multi-pole switch fuse arrangement for busbar systems with at least two switch fuse units for receiving a fuse each, the switch fuse units comprise a fastening and contact device for a busbar, and with a switching device for closing and interrupting the circuit of all switch fuse units, wherein the switch fuse assembly a combined switching and Blocking device comprising, with a shift lever, an actuator assembly, a locking device for each switch fuse unit and a locking device.

Although the switch-fuse arrangements known from the prior art already enable some elements which promote safety and a largely comfortable and safe operation, there is a need for further improved switch-fuse arrangements which, in particular, still allow an improvement in operability and fulfill high safety requirements, while working very reliably Have a long life and are designed so that incorrect operation can be avoided as possible.

This object is achieved by a multi-pole switch fuse arrangement according to claim 1, the claims 2 to 15 relate to particularly preferred embodiments of the switch fuse arrangement according to the invention.

According to the invention, the switch fuse arrangement comprises at least two switch fuse units, each of which can accommodate a fuse, and a contact device, preferably a contact and fastening device, for busbars. The switch fuse arrangement according to the invention comprises, per switch fuse unit, in each case a fuse holder for receiving a fuse, wherein the fuse holder between a receiving position and an operating position is switched back and forth formed. The fuse holder is designed so that a fuse (sometimes fuse link called) can be inserted into a fuse holder when the fuse holder is in its receiving position. As fuses typically cylindrical fuses are typically used.

The switch fuse assembly further comprises a Sicherungsmitnehmereinheit, each per switch fuse unit comprises a Sicherungsmitnehmer, wherein the Sicherungsmitnehmereinheit between a receiving position and an operating position is switched back and forth formed.

The fused switch assembly further comprises a shift lever which is switchable between a switch-on and a switch-off position, wherein the shift lever is coupled to the Sicherungsmitnehmereinheit that the Sicherungsmitnehmereinheit is in its receiving position when the shift lever is in its off position, and that the Sicherungsmitnehmereinheit is in its operating position when the shift lever is in its closed position.

The Sicherungsmitnehmereinheit and the Sicherungsmitnehmer are designed and coupled to the shift lever so that the Sicherungsmitnehmer fuses, which are used in a fuse holder, which is in its operating position, move relative to the fuse holder from a supply position to a contact position when the Shift lever is switched from its open position to its closed position.

Preferably, when in their ready position, the fuses are substantially entirely within a range defined by the outer limits of the fuse holder. Preferably, when the fuses are moved from a deployed position to a contact position relative to the fuse holder, the fuses are at least partially moved out of the fuse holder; in a particularly preferred embodiment, the fuses, when in their contact position, are substantially completely out of bounds of the fuse holder.

Such a configuration of a multi-pole fused switch arrangement has many advantages: On the one hand a fuse holder is provided for each fuse, which is positioned in its receiving position so that by the user conveniently a backup (also called fuse link) preferred a Fuse and preferably a substantially cylindrical fuse can be used. Although the fuse holder is preferably movable, during normal operation it is always connected to the switch fuse arrangement, for example to a housing of the fuse switch arrangement, so that the fuse holder can not be lost.

Typically, while the fuse holder is pushed out of the housing, so that not only a comfortable insertion of the fuse is possible, but also a safe insertion, because the receiving area of the fuse holder is located outside the housing and far from other contact points of the fused switch arrangement when he in the pickup position. Thereafter, the fuse holder can be comfortably brought into its operating position with the fuse used.

A special feature of the switch fuse arrangement according to the invention is in particular that when switching the switch fuse assembly, which is done by moving the lever from its open position to its closed position, the fuse is moved to a contact position, the fuse holder itself is not moved. Therefore, when the shift lever is moved from its off position to its on position, the fuse is moved relative to its fuse holder from a ready position to a contact position. This has the advantage that the movement of the fuse into its contact position can take place only within the housing of the fused switch arrangement, in particular the fuse holder is not moved, so that the fuse holder and in particular the parts that are accessible from outside by the user are not moved , The "integrity" of the housing of the fused switch arrangement therefore remains unchanged regardless of a switching of the shift lever, so that it is also possible to perfectly integrate the Sichenmgshalter in the fuses fuse arrangement when it is in its operating position, since the fuse holder is not subsequently relative to other parts of the fused switch arrangement, in particular not relative to the housing of the fused switch arrangement, must be moved when the shift lever is moved to the closed position.

Thus, it is also possible that when turning on the switch fuse assembly by means of the shift lever as few parts must be moved, in particular only parts must be moved within a housing of the switch fuse assembly.

Another advantage is that the fuse contact can be used directly as a switching contact, since no separate interruption by means of an additional switch contact is required.

The multi-pole fused switch arrangement according to the invention therefore optimizes both the operations for inserting or removing a fuse and the switch-on itself and separates in a particularly advantageous manner the movement of the elements which are required when using or replacing a fuse, namely the movement of the fuse holder, from the actual switch-on, in which, in addition to the shift lever and preferably exclusively provided within the housing Sicherungsmitnehmereinheit only the fuse itself are moved to its contact position. The fuse holder to be operated directly by the user can remain in its position, namely in the operating position.

A particular advantage is further that the fuse holder, which is operated by the user and therefore, in particular by urgent or not quite appropriate operation, worn over prolonged use, so that a positioning may not be so accurate in the pure power-on, the means when moving the shift lever in its closed position, no longer plays role, so that these possible Abnutzerscheinungen the fuse holder in important switch-on play no role.

According to a particular embodiment, the switch fuse arrangement is designed so that the shift lever can only be moved from its open position to its closed position when all fuse holders are in their operating position. This ensures that incorrect operation can be avoided, so that on the one hand a smooth and safe operation is ensured, on the other hand possible hazards, even by damage to the fuse arrangement order or parts thereof, can be avoided.

Preferably, each securing cam comprises a first blocking element and each fuse holder comprises a second blocking element interacting with one another such that the first blocking element abuts against or strikes against the second blocking element or a part thereof or is prevented from moving or moving further Switching the safety driver unit is prevented from its receiving position to its operating position, if even a fuse holder is not in its operating position.

Preferably, one of the locking elements, preferably the first locking element comprises a nose or projection or a similar element, while the other of the locking elements, preferably the second locking element, a stop or edge or a similar element and a guide element or a guide device or more Elements which form a guide, wherein these locking elements are formed and arranged so that the nose or the projection or a similar element of the one locking element can be inserted into the guide device of the other locking element only when the fuse holder in its operating position located. This also ensures that a faulty operation is avoided in a particularly simple and reliable manner, while at the same time the costs for realizing this function are kept low.

In a particularly preferred embodiment, the switch fuse assembly is formed so that the fuse holder can only be switched from its operating position to its receiving position when the shift lever is in its off position. This also ensures increased reliability and possible incorrect operation is prevented.

According to a particularly preferred embodiment, for this purpose, a third and a fourth blocking element are provided, which interact in a similar manner, as has been described in connection with the first and the second blocking element, so that in particular with regard to the closer realization of the third and fourth blocking element is referred to the execution of the first and second blocking element.

Of course, the concrete shapes and configurations of the third and fourth locking elements may be very similar to those of the first and second locking elements, but the shapes and configurations may differ therefrom.

In a particularly preferred embodiment, the switch fuse assembly is formed so that the shift lever is bistable, that is, in its two end positions, the open position and the closed position, is biased.

This is preferably realized by means of a spring device which acts on the shift lever directly or indirectly so with a force that it is biased both in its closed position and in its open position.

This has the advantage that the switching process, both from the closed position to the open position and from the open position to the closed position, although initiated by the user, but as soon as the shift lever is passed over a dead center, the further switching operation automatically performed by the spring force is, so that the switching process itself, at least at its critical points, largely independent of the force and the speed with which the user operates the lever.

In a particular embodiment, the fused switch arrangement also comprises a cam element, which is acted upon by the spring device and which is designed and positioned so that the above-mentioned center position or "dead position" of the shift lever is set, preferably approximately in a central region between the closed position and the Off position of the shift lever, wherein the shift lever, when it is outside of this "dead position" is automatically pressed by the force of the spring device and by the transmission of the cam member either in its closed position or in its open position, depending on which side of the " Dead position "of the lever he is located.

The cam member may interact either directly or indirectly with a portion of the shift lever, however, in an alternative embodiment, it is also possible that the cam member interacts directly or indirectly with a portion of the Sicherungsmitnehmereinheit, in particular a shift rod of Sicherungsmitnehmereinheit.

Preferably, the Sicherungsmitnehmereinheit is integrally formed, wherein the Sicherungsmitnehmer are connected to each other by means of at least one shift rod. This has the advantage that this essential for the switch-on unit is compact and reliable, in particular, it is avoided that, for example, accidentally, for example, by breaking a connecting element, only a Sicherungsmitnehmer or a fuse is guided into the contact position.

Preferably, the shift lever is coupled by means of a transmission lever to the Sicherungsmitnehmereinheit, more preferably the transmission lever is attached to the Sicherungsmitnehmer, which is the shift lever closest to allow the simplest possible coupling and forces, in particular torque forces that may occur during the switching process to minimize.

In a preferred embodiment, the fuse holders are also designed so that they latch in their operating position, in a particularly preferred embodiment, a spring device is provided so that the fuse holder can be pushed particularly convenient for the user in the operating position and remain reliable there.

In a particular embodiment of the switch fuse arrangement, it is designed such that it has a longitudinal axis which extends through the fuse holders arranged one after the other in the longitudinal direction, wherein the switch fuse arrangement has a connection block for connecting contact cables at each longitudinal end. This has the advantage that the switch fuse arrangement can be kept very compact and narrow, further provided connections on each side of the switch fuse arrangement (in the longitudinal direction), which allows easy accessibility.

Preferably, the lines are insulated in the fused switch arrangement, so that no further insulating elements are required, which also allows a compact fused switch arrangement.

The switch fuse arrangement preferably comprises an integrated circuit for controlling the fused switch arrangement, a bus for passing on measured values, a display for displaying measured values or operating states, and control buttons or operating elements for operating the fused switch arrangement.

Furthermore, such a switch fuse arrangement preferably comprises electronic measuring coils, which serve, for example, the evaluation of the operating states and their measured data can be given to the circuit, for example, so that it processes the measured data, preferably corresponding results and / or information are displayed on the display.

Fig. 1

eine perspektivische Ansicht einer Ausführungsform einer erfindungsgemäßen Schaltersicherungsanordnung;

Fig. 2

eine perspektivische Ansicht einer erfindungsgemäßen Sicherungsanordnung, bei der einige Elemente, insbesondere Gehäuseteile, entfernt sind, wobei sich der Schalthebel in seiner Ausschaltstellung befindet;

Fig. 3

eine perspektivische Ansicht einer erfindungsgemäßen Sicherungsanordnung, bei der einige Elemente, insbesondere Gehäuseteile, entfernt sind, wobei sich der Schalthebel in einer Mittelstellung befindet;

Fig. 4

eine perspektivische Ansicht einer erfindungsgemäßen Sicherungsanordnung, bei der einige Elemente, insbesondere Gehäuseteile, entfernt sind, wobei sich der Schalthebel in seiner Einschaltstellung befindet;

Fig. 5

eine Sicherungsmitnehmereinheit und einen damit gekoppelten Schalthebel für eine Schaltersicherungsanordnung gemäß der vorliegenden Erfindung;

Fig. 6

einen Sicherungshalter einer Schaltersicherungsanordnung gemäß der vorliegenden Erfindung;

Fig. 7

eine perspektivische Ansicht einer erfindungsgemäßen Sicherungsanordnung, bei der einige Elemente, insbesondere Gehäuseteile, entfernt sind, wobei sich der Schaltersicherungsschalter in seiner Ausschaltstellung befindet;

Fig. 8

eine perspektivische Ansicht einer erfindungsgemäßen Sicherungsanordnung, bei der einige Elemente, insbesondere Gehäuseteile, entfernt sind, wobei sich der Schaltersicherungsschalter in seiner Einschaltstellung befindet; und

Fig. 9

eine perspektivische Ansicht einer weiteren Ausführungsform der erfindungsgemäßen Schaltersichenmgseinheit, bei der einige Elemente, insbesondere Gehäuseteile, entfernt sind, wobei sich der Schaltersicherungsschalter in seiner Ausschaltstellung befindet.

These and other features and advantages of the switch fuse arrangement according to the invention will become more apparent from the following drawings, which show particularly advantageous embodiments of the switch fuse arrangement. Show it:

Fig. 1

a perspective view of an embodiment of a switch fuse arrangement according to the invention;

Fig. 2

a perspective view of a fuse arrangement according to the invention, in which some elements, in particular housing parts, are removed, wherein the shift lever is in its open position;

Fig. 3

a perspective view of a fuse arrangement according to the invention, in which some elements, in particular housing parts, are removed, wherein the shift lever is in a central position;

Fig. 4

a perspective view of a fuse arrangement according to the invention, in which some elements, in particular housing parts, are removed, wherein the shift lever is in its closed position;

Fig. 5

a Sicherungsmitnehmereinheit and a coupled lever for a fused switch arrangement according to the present invention;

Fig. 6

a fuse holder of a fused switch device according to the present invention;

Fig. 7

a perspective view of a fuse arrangement according to the invention, in which some elements, in particular housing parts, are removed, wherein the switch fuse switch is in its open position;

Fig. 8

a perspective view of a fuse arrangement according to the invention, in which some elements, in particular housing parts, are removed, wherein the switch fuse switch is in its closed position; and

Fig. 9

a perspective view of another embodiment of the invention Schaltersichenmgseinheit, in which some elements, in particular housing parts, are removed, wherein the switch fuse switch is in its off position.

Fig. 1 shows a perspective view of an embodiment of a switch fuse assembly 10 according to the invention, wherein this switch fuse assembly 10 is a 3-pin switch fuse arrangement. The fused switch arrangement 10 is mounted on a busbar system with three bus bars 90.

The fused switch assembly 10 includes a housing 12, wherein, in a longitudinal axis direction, which is in Fig. 1 extends from left to right, in each case a terminal block 30 is provided with terminals 32 for connecting contact cables at the respective end of the switch fuse arrangement.

The switch fuse arrangement 10 comprises per pole and per switch fuse unit 100 (see, for example Fig. 2 ) a fuse holder 200 in this embodiment therefore three fuse holders 200th

The fuse switch 200 are reciprocable between an operating position and a receiving position, with two fuse holder 200, namely the in Fig. 1 left and center fuse holder 200, are in their operating position, while the in Fig. 1 Sichenmgshalter 200 arranged on the right is in its receiving position.

As in Fig. 1 can be seen, the fuse holder 200 from its operating position in which it is substantially completely within the housing 12 of the fused switch arrangement 10, in Fig. 1 moved upward and substantially linearly in its receiving position, so that a fuse 50 (often referred to as a fuse link) used in the fuse holder and can be removed therefrom.

The switch fuse assembly 10 includes a shift lever 300, which is formed between a switch-on and a switch-off switched back and forth, wherein the shift lever 300 in Fig. 1 is in its off position.

In the Fig. 1 illustrated embodiment of a switch fuse assembly also includes a display 800, in particular for displaying operating and functional data, and control buttons or controls 820 for controlling the switch fuse assembly.

The Figs. 2 to 4 show the in Fig. 1 shown switch fuse arrangement in a partially cut state, so that some functional elements that are located within the housing 12 of the fused switch assembly 10, can be seen.

Fig. 2 shows the switch fuse assembly 10 when the shift lever 300 is in its off position, Fig. 3 shows the switch fuse assembly 10 with the lever 300 in a middle position, and Fig. 4 shows the switch fuse assembly 10 with the shift lever 300 in its closed position. The fuse holders 200 are in all Figs. 2 to 4 in its operating position, since otherwise the shift lever 300 could not move out of its open position into the closed position, as will be explained in connection with the following figures.

In Fig. 2 the fuses 50 (shown in dashed lines) are in their ready position, ie not in a contact position, and essentially within the fuse holder 200, namely exactly in a position relative to the fuse holder 200 as shown in FIG Fig. 1 is shown, except that the fuse holder are all in their operating position.

In the Fig. 2 embodiment shown also includes electrical measuring coils 830, which are preferably current-voltage converter, which serve to monitor the operating states of the fused switch arrangement. The corresponding measured values can be forwarded, for example, to an integrated circuit for processing and / or for controlling the fused switch arrangement.

Will now the lever 300, as in the Figs. 3 and 4 shown from its off position via a middle position ( Fig. 3 ) in its closed position ( Fig. 4 ), the fuses 50 are moved by the securing driver unit 400 (shown in FIG Fig. 5 shown in more detail, see below) relative to the fuse holders from a deployment position (FIG. Fig. 2 ) into a contact position ( Fig. 4 ) emotional. In this case, the fuses 50 are at least partially, in the embodiment shown here substantially completely, relatively moved to and out of the fuse holders 200 without the fuse holder 200 itself being moved.

As in the Figs. 2 to 4 Also clearly seen, the switch fuse assembly is formed so that the shift lever via a cam member 600 which is biased by a spring device 610, is acted upon so that the shift lever 300 is forced to its end positions, either in the closed position or in the open position , so that it is a bistable element.

Fig. 3 shows the shift lever 300 in a middle position, ie in a position in which the cam member 600, against the spring force of the spring element 610, is pressed into its maximum compressed position.

If now the shift lever 300 from its center position out, for example, moves in the direction of its closed position, the spring-loaded cam element acts so that it automatically pushes the shift lever 300, regardless of another force exerted by the user in its closed position.

Thus, as already explained in the general description, it is ensured that the switching operation is carried out essentially independently of the operating speed and the force with which the user actuates the shift lever 300.

Fig. 5 shows in a perspective view an embodiment of a Sicherungsmitnehmereinheit 400, coupled to the shift lever 300th

The Sicherungsmitnehmereinheit 400 includes three Sicherungsmitnehmer 420, in each of which a fuse 50 is inserted. The Sicherungsmitnehmer 420 are connected to each other by means of a shift rod 440, in total, it is in this embodiment, the Sicherungsmitnehmereinheit 400 to an integrally formed element.

The Sicherungsmitnehmereinheit 400 is coupled by means of a transmission lever 350 to the shift lever 300, so that the Sicherungsmitnehmereinheit 400 in the direction of extension of the shift rod 440, ie in Fig. 5 from left to right and vice versa, moving, when the shift lever is toggled between its on position and its off position.

Therefore, when the shift lever 300 is switched from its OFF position to its ON position, the Sicherungsmitnehmereinheit 400 shifts the fuses 50 relative to the (not shown) fuse holders 200 in a contact position.

Fig. 6 shows in a perspective view of an embodiment of a Sichenmgshalters 200, in which a fuse 50 is used, as for example in Fig. 1 is apparent.

As in Fig. 5 As can be seen, each securing cam 420 of the securing driver unit 400 comprises a nose-shaped first blocking element 480, which is provided with a locking device Fig. 6 shown second locking member 280, formed in this embodiment with a guide groove 284, interacts so that the first locking element abuts against the second locking element and prevents switching of the Sicherungsmitnehmereinheit from its receiving position to its operating position when a fuse holder is not in its operating position in this case, the nose formed as a first locking element 480 is not aligned with the groove 284 of the second locking element 280, but abuts against a stop 282.

Furthermore, each securing cam 420 of the securing driver unit 400 comprises a third blocking element 460, which in this embodiment is formed as a projection or as a plate, while the fuse holder 200 comprises a fourth blocking element 260 which comprises two projections 262, 264, which are arranged at a distance from each other, such that a guide groove 266 is formed between them. The third locking member 460 and the fourth locking member 260 are formed in a shape that they interact with each other so that the third locking element abuts against the fourth locking element and prevents switching of the fuse holder from its operating position to its receiving position when the shift lever in his Switch-on position is located.

This situation is in Fig. 8 shown in which one sees very well that formed as a plate third locking element 460 engages in the groove 266 of the fourth locking element 260, so that the fuse holder 200 can not be pushed from its operating position to a receiving position, in Fig. 8 therefore can not be pushed up.

Fig. 7 shows a similar representation as Fig. 8 However, now is the shift lever 300 in its off position, and Fig. 7 clearly shows that the third blocking element 460 and the second blocking element 260 are not in engagement with each other, so that it is possible to remove the fuse holder 200 from the operating position shown in FIG Fig. 7 is shown to switch to the recording position, ie in Fig. 7 to push up.

Fig. 9 shows a further embodiment of a switch fuse arrangement according to the invention, which substantially coincides with the embodiment of the fused switch arrangement, as shown in the Figs. 1 to 8 has been described.

However, unlike the first embodiment, this switch fuse assembly 10 includes another cam member 600a, which is also biased by a spring device 610a.

In principle, the operation of the alternative cam member 600a, in cooperation with the spring device 610a, is identical to the embodiment as shown in FIGS FIGS. 1 to 8 However, the cam member 600a does not act on the shift lever 300, but on a counter-element 640, which is formed substantially triangular and on the Sicherungsmitnehmereinheit 400, in this embodiment to a shift rod 440, is arranged.

Otherwise, with respect to the operation of the further embodiment, the fused switch arrangement 10, as shown in FIG Fig. 9 has been described, referred to the above description.

The features disclosed in the foregoing description, claims and drawings may be significant to the practice of the invention in its various forms both individually and in any combination thereof.

Claims (15)

1. A multi-pole fused switch arrangement (10) for busbar systems, with at least two fused switch units (100), each of which can accommodate a fuse (50), and with a contact device for busbars, wherein the fused switch arrangement (10) furthermore comprises the following:

   - in each case a fuse holder (200) for the accommodation of a fuse (50) for each fused switch unit (100), wherein the fuse holder (200) is designed such that it can be switched backwards and forwards between a reception position and an operating position, and wherein the fuse holder (200) is designed such that a fuse (50) can be inserted into a fuse holder (200), if the fuse holder (200) is located in its reception position,

   - a switching lever (300), which is configured to switch between a switched-on position and a switched-off position,

   characterized in that the fused switch arrangement (10) comprises:

   - a fuse driver unit (400), which in each case comprises a fuse driver (420) for each fused switch unit (100), and is designed such that it can be switched backwards and forwards between a reception position and an operating position,

   - wherein the switching lever (300) is coupled with the fuse driver unit (400) such that the fuse driver unit (400) is located in its reception position if the switching lever (300) is located in its switched-off position, and such that the fuse driver unit (400) is located in its operating position if the switching lever (300) is located in its switched-on position,

   wherein the fuse driver unit (400) is designed and coupled with the switching lever (300) such that the fuse driver (420) and fuses (50), which are inserted in a fuse holder (200), which is located in its operating position, move relative to the fuse holder (200) from a stand-by position into a contact position, if the switching lever (300) is switched from its switched-off position into its switched-on position.
2. The multi-pole fused switch arrangement (10) according to claim 1, characterised in that the fused switch arrangement (10) is designed such that the switching lever (300) can only be moved from its switched-off position into its switched-on position if all the fuse holders (200) are located in their operating positions.
3. The multi-pole fused switch arrangement (10) according to claim 2, characterised in that each fuse driver (420) comprises a first blocking element (480), and each fuse holder (200) comprises a second blocking element (280), which interact with one another such that the first blocking element (480) impacts against a part of the second blocking element (280), and prevents the fuse driver unit (400) from switching from its reception position into its operating position, if a fuse holder (200) is not located in its operating position.
4. The multi-pole fused switch arrangement (10) according to claim 3, characterised in that the first blocking element (480) comprises a nose or a projection, while the second blocking element (280) comprises a stop (282) and a guide (284), wherein the first and the second blocking elements (280) are designed and arranged such that the nose or the projection of the first blocking element (480) can only be introduced into the guide (284) of the second blocking element (280) if the fuse holder (200) is located in its operating position.
5. The multi-pole fused switch arrangement (10) according to any one of the preceding claims, characterised in that the fused switch arrangement (10) is designed such that the fuse holder (200) can only be switched from its operating position into its reception position if the switching lever (300) is located in its switched-off position.
6. The multi-pole fused switch arrangement (10) according to claim 5, characterised in that each fuse driver (420) comprises a third blocking element (460) and each fuse holder (200) comprises a fourth blocking element (260), which interact with one another such that the third blocking element (460) strikes against a part of the fourth blocking element (260), and prevents the fuse holder (200) from switching from its operating position into its reception position, if the switching lever (300) is located in its switched-on position.
7. The multi-pole fused switch arrangement (10) according to claim 6, characterised in that the third blocking element (460) comprises a nose or a projection, while the fourth blocking element (260) forms a stop and a guide (266), wherein the first and the second blocking elements (480, 280) are designed and arranged such that the nose or the projection of the third blocking element (460) can only be introduced into the guide (266) of the fourth blocking element (260) if the fuse holder (200) is located in its operating position.
8. The multi-pole fused switch arrangement (10) according to any one of the preceding claims, characterised in that the fused switch arrangement (10) is designed such that a force is applied to the switching lever (300) directly or indirectly by means of a spring device (610) such that the switching lever (300) is pre-loaded both into its switched-on position, and also into its switched-off position.
9. The multi-pole fused switch arrangement (10) according to claim 8, characterised in that a cam element (600) is provided, to which a force is applied by the spring device (610), and which interacts directly or indirectly with a part of the switching lever (300).
10. The multi-pole fused switch arrangement (10) according to claim 8, characterised in that a cam element (600a) is provided, to which a force is applied by the spring device (610a), and which interacts directly or indirectly with a part of the fuse driver unit (400), preferably with a counter-element (640).
11. The multi-pole fused switch arrangement (10) according to any one of the preceding claims, characterised in that the fuse driver unit (400) is designed as one piece, wherein the fuse drivers (420) are connected with one another by means of at least one switching bar (440).
12. The multi-pole fused switch arrangement (10) according to any one of the preceding claims, characterised in that the switching lever (300) is coupled with the fuse driver unit (400) by means of at least one transfer lever (350).
13. The multi-pole fused switch arrangement (10) according to claim 12, characterised in that at least one transfer lever (350) is attached to the fuse driver (420) that is located closest to the switching lever (300).
14. The multi-pole fused switch arrangement (10) according to any one of the preceding claims, characterised in that the fuse holders (200) are designed such that they lock into their operating position.
15. The multi-pole fused switch arrangement (10) according to any one of the preceding claims, characterised in that it has a longitudinal axis, which extends through the fuse holders (200) arranged one behind another in the longitudinal direction, wherein the fused switch arrangement (10) has a terminal block (30) at each longitudinal end for purposes of connecting contact cables.

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