Fuse switch-disconnectors for busbars of different thicknesses

Abstract

A fuse switch disconnector comprises: a housing; a first sliding element which is arranged to be movable back and forth relative to the housing between a first position and a second position and which can be latched in each of the first and second positions; a contact element which is arranged to be movable relative to the housing; and a spring element. The first sliding element and the contact element are configured to define a first receiving area for a first busbar of a first thickness when the first sliding element is arranged in the first position, and a second receiving area for a second busbar of a second thickness which is smaller than the first thickness when the first sliding element is arranged in the second position.The spring element is designed such that it pretensions the contact element in the direction of the first sliding element in order to contact a first busbar insertable into the first receiving area and to contact a second busbar insertable into the second receiving area.

Description

[0001] The present invention relates to a fuse switch disconnector for busbars of different thicknesses.

[0002] Fuse switch disconnectors are known to be mounted on a busbar system and can be adapted to different busbar thicknesses. Busbars with a thickness of 5 and 10 mm are typically used. Such fuse switch disconnectors can be modified or adjusted using additional (removable) or components integrated into the fuse switch disconnector (non-removable). However, covers are increasingly being mounted in front of the busbars, which also provide contact protection during the installation of the fuse switch disconnectors. To still be able to mount fuse switch disconnectors, more compact designs are required that can be installed despite this contact protection.

[0003] DE 297 21 445 U1 describes a device adapter, in particular for load-break switches, with contact feet and / or locking feet projecting from an adapter plate or the like for sliding onto busbars, wherein the contact feet or locking feet are substantially L-shaped and define a foot section which runs approximately parallel to and at a distance from the adapter plate, with compensating elements which can be placed on or in the contact feet or locking feet.

[0004] DE 198 36 383 C1 describes a contacting device with clamping brackets for clamping sections of busbars, with electrical contact elements which can be electrically contacted at least in some areas through the busbar sections via openings formed on the underside of the adapter, in which each clamping bracket has a substantially L-shaped clamping part and a pivoting bracket adjustably hinged thereto, wherein the leg length of the adjustable pivoting bracket is dimensioned differently than the leg length of the clamping part.

[0005] It is an object of the present invention to provide a fuse switch disconnector to improve user-friendliness taking into account the desired applications.

[0006] This object is achieved by a fuse switch disconnector according to claim 1. Claims 2 to 15 relate to particularly advantageous implementations of the fuse switch disconnector according to claim 1.

[0007] One aspect of the present invention relates to a fuse switch disconnector for busbars of different thicknesses, in particular for fastening to busbars of different thicknesses and / or contacting busbars of different thicknesses. The fuse switch disconnector comprises a housing and furthermore a sliding element (and optionally a further sliding element as described below), a contact element, and a spring element. The fuse switch disconnector can also comprise a plurality of sliding elements (and optionally a plurality of further sliding elements), a plurality of contact elements, and a plurality of spring elements; in particular, one sliding element (and optionally a further sliding element), a contact element, and a spring element for each busbar of a busbar system.The fuse switch-disconnector can in particular be three-phase and thus be mounted on three busbars of a busbar system, each corresponding to one of three phases.

[0008] The sliding element is arranged so as to be movable back and forth relative to the housing between a first position and a second position and can be locked in each case in the first position and in the second position. The sliding element can be attached or fastened to the housing in such a way that it is arranged so as to be movable back and forth between the first position and the second position. In particular, the sliding element can be arranged so as to be movable linearly or substantially linearly between the first position and the second position relative to the housing, in particular along a Z direction. The first position can lie in the negative Z direction relative to the second position. The X direction, Y direction and Z direction are each perpendicular to one another.

[0009] The contact element is arranged so as to be movable relative to the housing. In particular, the contact element can be arranged so as to be linearly or substantially linearly movable relative to the housing, in particular along the Z direction. The contact element can be arranged relative to the sliding element in the positive Z direction. When the sliding element is in the first position, a distance, in particular in the Z direction, between the sliding element and the contact element can be greater than when the sliding element is in the second position. By moving the contact element relative to the housing, the distance, in particular in the Z direction, between the contact element and the sliding element (which is locked in the first or second position) can be changed. The contact element can in particular move towards the sliding element and away from the sliding element.

[0010] The sliding element and the contact element are configured to define a first receiving area for a first busbar of a first thickness when the sliding element is arranged in the first position, and a second receiving area for a second busbar of a second thickness that is smaller than the first thickness when the sliding element is arranged in the second position. Thus, the first busbar can be arranged or inserted between the contact element and the sliding element arranged in the first position, and the second busbar can be arranged or inserted between the contact element and the sliding element arranged in the second position.The extension of the first receiving area in the Z direction (height of the first receiving area) may be equal to the first thickness, and the extension of the second receiving area in the Z direction (height of the second receiving area) may be equal to the second thickness. Furthermore, a distance between the first and second positions of the sliding element may be equal to the difference between the first and second thicknesses.

[0011] The spring element or the spring is designed such that it prestresses the contact element in the direction of the sliding element in order to contact a first busbar inserted into the first receiving area and to contact a second busbar inserted into the second receiving area. The spring element can in particular exert a spring force on the contact element that points in the direction of the sliding element, in particular in the negative Z direction. When the first busbar is inserted into the first receiving area between the sliding element, which is in the first position, and the contact element, the contact element can be prestressed towards the first busbar by the spring force; the spring force can be transmitted through the contact element to the first rail, so that the first rail is clamped between the contact element and the sliding element in the first position.When the second busbar is inserted into the second receiving area between the sliding element, which is in the second position, and the contact element, the contact element can be biased towards the second busbar by the spring force; the spring force can be transmitted through the contact element to the second rail, so that the second rail is clamped between the contact element and the sliding element in the second position. The magnitude of the spring force or the clamping force acting on the first rail, which is clamped between the contact element and the sliding element in the first position, can be equal to the magnitude of the spring force or the clamping force acting on the second rail, which is clamped between the contact element and the sliding element in the second position. Furthermore, the first or second busbar can be clamped between the sliding element in the first or second position.second position and another part of the housing to hold and / or fix the busbar in the first or second receiving area.

[0012] The fuse switch disconnector according to the invention has the advantage that busbars of different thicknesses, in particular busbars of the first or second thickness, can be received in the first or second receiving area between the sliding element, which is arranged in the first or second position, and the contact element and can be contacted by the contact element. By arranging and locking the sliding element in the first or second position, in particular the distance between the sliding element and contact element can be adapted to the respective thickness of the first or second busbar, so that the contact element can be preloaded with the same spring force in the direction of the first or second busbar. In this way, both the first busbar and the second busbar can be contacted safely and reliably.

[0013] Furthermore, the locking of the sliding element in the first or second position, as well as the spring-loaded movement of the contact element, enables simple, quick, and secure installation on the busbars or contacting of the busbars. This increases user-friendliness.

[0014] The sliding element can be adjusted without tools, allowing its position to be adapted to the thickness of the respective busbar or busbar system. Furthermore, the sliding element can be attached or installed and secured to the housing, thus preventing the risk of loss of components of the fuse switch disconnector. Furthermore, the fuse switch disconnector according to the invention enables a compact design in which the busbars can be accessed through a slotted cover on the busbars, which serves as contact protection. Such contact protection can, in particular, comply with the DIN VDE 0603-3-2 standard (Section 10).

[0015] In a preferred embodiment, the housing comprises a guide element for guiding the sliding element along a guide direction, in particular the Z-direction, between the first and the second position. The guide element can in particular be designed as a foot part or hook part of the housing. The guide element and the sliding element can have a tongue and groove connection for guiding the sliding element relative to the guide element along the guide direction. In particular, the sliding element can have a tongue or a projection that engages in a groove or recess of the guide element, or two tongues or projections arranged on opposite sides, each of which engages in one of two parallel grooves or recesses of the guide element. The roles of tongues and grooves can also be reversed (so that the sliding element has the groove or grooves and the guide element has the tongue or tongues).The tongues and grooves can each extend along the Z direction.

[0016] This enables simple, safe, and quick movement of the sliding element between the first and second positions, particularly precise positioning of the sliding element in the first and second positions, respectively. This increases user-friendliness and improves the stability of the fuse switch disconnector. Attaching or fastening the sliding element to the housing, particularly through the tongue-and-groove connection, also prevents loose components, thus increasing user-friendliness.

[0017] In a preferred embodiment, the guide element has a first locking edge and a second locking edge. The first locking edge and the second locking edge can each run perpendicular or substantially perpendicular to the guide direction, in particular parallel or substantially parallel to the X-direction. The first locking edge and the second locking edge can run parallel or substantially parallel to one another and be spaced apart from one another in the guide direction. The sliding element further comprises a locking lug or a locking projection which is configured to lock onto the first locking edge in order to lock the sliding element in the first position, and which is configured to lock onto the second locking edge in order to lock the sliding element in the second position.In particular, the locking lug can be limited in the negative Z direction by a stop surface, contact surface, or support surface that runs perpendicular or substantially perpendicular to the Z direction. The stop surface can abut the first or second locking edge when the locking lug is engaged in the first or second recess. The contact between the stop surface and the first or locking edge thus prevents movement of the locking lug from the first or second recess in the negative Z direction, thereby locking the sliding element in the first or second position.

[0018] This allows for simple and secure locking of the sliding element in the first or second position. Furthermore, additional locking components are eliminated, allowing the fuse switch disconnector to be manufactured simply and cost-effectively.

[0019] In a preferred embodiment, the guide element has a first recess or depression delimited by the first locking edge, so that when the locking lug locks onto the first locking edge, the locking lug engages, preferably in a form-fitting manner, into the first recess. Furthermore, the guide element can have a second recess or depression delimited by the second locking edge, so that when the locking lug locks onto the second locking edge, the locking lug engages, preferably in a form-fitting manner, into the second recess.

[0020] This ensures a secure and stable locking connection so that the sliding element can be securely locked in the first position and / or second position.

[0021] In a preferred embodiment, the locking lug and the first recess are designed such that, when the sliding element is locked in the first position, the locking lug can be pressed out of the first recess by a (sufficiently large) external force acting on the sliding element in the direction from the first position to the second position, in particular in the positive Z direction, in order to release the locking of the sliding element (20) in the first position and, in particular, subsequently to move the sliding element from the first position to the second position. In particular, the locking lug can be delimited in the positive Z direction by a bevel or beveled surface, wherein the bevel encloses an acute angle with the Z direction, preferably an angle less than or equal to 45° and / or greater than or equal to 20°, particularly preferably an angle of 20°, 25°, 30°, 35°, 40° or 45°.The first recess may have a corresponding bevel against which the bevel of the locking lug rests when the locking lug engages the first recess. The bevel reduces the force required to push the locking lug out of the first recess. The sliding element can then be moved from the first to the second position so that the locking lug engages the second recess.

[0022] This allows for particularly easy and quick movement of the sliding element from the first to the second position, and in particular, no tools are required to release the locking mechanism. This increases user-friendliness.

[0023] In a preferred embodiment, the fuse switch disconnector is configured such that, when the sliding element is latched in the second position, the latching nose can be pushed in the direction of the first external force beyond the second latching edge or displaced against the second latching edge by a (sufficiently large) first external force acting perpendicularly or substantially perpendicularly to the guide direction and perpendicularly or substantially perpendicularly to the second latching edge, in particular parallel to the Y direction, on a portion of the sliding element that protrudes in the guide direction (in particular in the positive Z direction) relative to the guide element, and can then be released from the latching in the second position and moved towards the first position by a second external force acting on the sliding element in the direction from the second position to the first position.In particular, when the sliding element is locked in the second position, the sliding element can rest against the guide element, while the external force causes the (particularly plate-shaped) sliding element to be elastically deformed and thus at least partially removed from the guide element, in particular such that the locking lug is moved out of the second recess. When the sliding element is subsequently moved toward the first position (in the negative Z direction) and no external force acts in the Y direction, the locking lug can engage in the first recess.

[0024] This allows for particularly simple and quick movement of the sliding element from the second to the first position, and in particular, no tools are required to release the locking mechanism. This increases user-friendliness.

[0025] In a preferred embodiment, the sliding element is plate-shaped. In particular, the sliding element can extend at least partially parallel to the XZ plane (i.e., parallel to the X-direction and the Z-direction). In the XZ plane, the plate-shaped sliding element can, in particular, have an L-shape or a hook shape.

[0026] This has the advantage that the sliding element can be manufactured easily and cost-effectively. Furthermore, it enables a compact design of the fuse switch disconnector, in which the plate-shaped sliding element can reach the (first or second) busbar through a slotted cover of the busbar, which serves primarily as contact protection.

[0027] Furthermore, when the sliding element is arranged in the first position, the sliding element and the guide element can be arranged one above the other or congruently. In particular, the guide element can also be plate-shaped or substantially plate-shaped and can have the same or substantially the same shape as the sliding element, in particular an L-shape or hook shape as described above. When the sliding element is arranged in the second position, however, the sliding element and the guide element can be arranged offset from one another in the guide direction, in particular such that a portion of the sliding element protrudes relative to the guide element in the positive Z direction.

[0028] This results in a particularly compact and space-saving design in which the busbars can be reached through a slotted cover of the busbars, which serves as contact protection.

[0029] In a preferred embodiment, the sliding element has a surface with one or more grooves and / or notches, which preferably run perpendicular or substantially perpendicular to the guide direction.

[0030] This increases the frictional force between the sliding element and the user's finger, allowing the user to move the sliding element more easily between the first and second positions. This increases user-friendliness.

[0031] In a preferred embodiment, a distance between the first and the second position of the sliding element is greater than a stroke or spring travel of the spring element. The stroke refers to a distance that the spring element travels when mounting the fuse switch disconnector on the busbar system, in particular when receiving the first busbar in the first receiving area or when receiving the second busbar in the second receiving area. The distance between the first and the second position of the sliding element can be equal to the difference between the first and the second thickness. Particularly preferably, the distance between the first and the second position of the sliding element is at least twice, at least three times or at least five times the stroke of the spring element.

[0032] The use of a spring element with a shorter stroke enables a compact design and cost-effective production of the fuse switch disconnector. By arranging the sliding element in the first or second position, the distance between the sliding element and the contact element can still be adjusted to the respective thickness of the first or second busbar, in particular so that the contact element can be preloaded toward the first or second busbar with the same spring force. This allows for safe and reliable contact between both the first and second busbars.

[0033] In a preferred embodiment, the fuse switch disconnector comprises a further sliding element, which is arranged parallel to the sliding element and spaced from the sliding element in a direction of extension of the busbars, in particular in the Y direction. The sliding element and the further sliding element can be designed and arranged identically (or in a mirror image). In particular, the first and second receiving areas can be defined by the contact element, the sliding element, and the further sliding element when the sliding element and the further sliding element are each in their first and second positions, respectively.

[0034] This allows for stable and secure mounting of the busbars in the respective mounting areas and their secure contact. The use of two particularly narrow parallel sliding elements instead of one wider sliding element also enables a more compact design, allowing access to the busbars through a slotted cover that serves as contact protection.

[0035] In a preferred embodiment, the housing comprises a further guide element for guiding the further sliding element along the guide direction, wherein the further guide element is arranged parallel to the guide element and is spaced from the guide element in the extension direction of the busbars, in particular in the Y direction. The guide element and the further guide element can be designed and arranged identically (or in a mirror image).

[0036] This enables safe and precise guidance of the two sliding elements between their respective first and second positions. The use of two particularly narrow parallel guide elements instead of one wider guide element also enables a more compact design, allowing access to the busbars through a slotted cover that serves as a contact guard.

[0037] In a preferred embodiment, the sliding element and the further sliding element are arranged on opposite side sections or housing halves of the housing. The side sections can be designed and arranged symmetrically, substantially symmetrically or at least partially symmetrically. The side sections can in particular be designed separately and separably connected to form the housing. The two side sections of the housing can each comprise one of the two guide elements, and the two sliding elements can each be attached or fastened to one of the two guide elements. The two sliding elements can in particular be arranged on opposite outer surfaces of the housing or of the guide elements. In this case, the locking lugs of the two sliding elements can each point inwards, i.e. can be arranged on opposite surfaces of the two sliding elements.In this case, the forces required to release the locking mechanisms of the sliding elements from their second positions are directed outwards.

[0038] This enables a compact and stable design of the fuse switch disconnector and simple and user-friendly adjustment of the sliding elements.

[0039] In a preferred embodiment, the contact element is plate-shaped. Particularly preferably, the contact element comprises a first contact section and a second contact section, which are arranged parallel to one another and spaced apart from one another in the extension direction of the busbars, in particular in the Y direction, as well as a connecting section for connecting the first contact section to the second contact section. The first and second contact sections can each be arranged parallel to the XZ plane, and the connecting section can be arranged parallel to the XY plane. Furthermore, the first contact section can be opposite the sliding element in the Z direction, and the second contact section can be opposite the further sliding element in the Z direction.

[0040] This allows the contact element to be manufactured simply and cost-effectively. Furthermore, particularly secure contact with the busbars is achieved through the first and second contact sections. Furthermore, this enables a compact design of the fuse switch disconnector, allowing access to the busbars through a slotted cover, which serves, for example, as contact protection. The U-shape of the contact element is particularly advantageous for use when piercing a touch-protected busbar board. This increases user-friendliness.

[0041] These and other features and advantages of the invention will become clear from the accompanying drawings, which show particularly advantageous embodiments. They show: Fig. 1A shows a fuse switch disconnector according to an embodiment of the present invention mounted on a busbar system; Fig. 1B the fuse switch disconnector with one half of the housing removed; Fig. 2 the fuse switch disconnector from a different perspective; Fig. 3 the fuse switch disconnector with a sliding element which is in a first position relative to the housing; Fig. 4 is a sectional view of the fuse switch disconnector contacting a busbar of a first thickness; Fig. 5 is a sectional view of the fuse switch disconnector contacting a busbar of a second thickness that is smaller than the first thickness; Fig. 6 shows the fuse switch disconnector in which the sliding element is locked in the first position, with a representation of the force required to move the sliding element from the first position to the second position, as well as a detailed view of a locking lug of the sliding element; and Fig. 7 shows the fuse switch disconnector in which the sliding element is locked in the second position, with an illustration of the force to be applied to move the sliding element from the second position to the first position, as well as a detailed view of the locking lug of the sliding element.

[0042] Fig. 1A shows a fuse switch disconnector 1 according to an embodiment of the present invention mounted on a busbar system. Fig. 1B shows the fuse switch disconnector 1 from Fig. 1A, where one half of the housing has been removed Fig. 2 shows the fuse switch disconnector 1 from a different perspective. Fig. 1 and Fig. 2 show, in particular, a fuse switch disconnector 1 for a three-phase busbar system with a spacing of 60 mm. The fuse switch disconnector 1 is thus designed for mounting on and contacting three busbars 3. The busbars 3 extend along a direction of extension (Y-direction). The fuse switch disconnector 1 comprises a housing 10 with two opposite side sections (housing halves) 101a, 101b.

[0043] The fuse switch disconnector 1 can be adapted to the respective thickness of the busbars 3. For example, it can be adjusted for busbars 3 with a thickness of 5 mm (second thickness) or 10 mm (first thickness). This is done by a sliding element (a slider) 20 on an underside of the fuse switch disconnector 1, which engages at a defined first or second position in the respective housing half 101a, 101b in which it is guided (see Fig. 3). The sliding elements 20 are adapted to the corresponding busbar system before installation on the busbar system.

[0044] Fig. 3 shows the fuse switch disconnector 1 from Fig. 1 and Fig. 2 with the sliding element 20, which is in the first position relative to the housing 10. The sliding element 20 is guided by a guide element 30 of the housing 10 between the first and second positions along a guide direction (Z direction). The sliding element 20 and the guide element 30 are each plate-shaped (parallel to the XZ plane). The sliding element 20 is guided by two grooves in the housing 10 and guide element 30, respectively, and the corresponding springs on the sliding element 20. The sliding element 20 is L-shaped or hook-shaped in the XZ plane. The sliding element 20 further has three grooves 25 that run perpendicular to the guide direction. The fuse switch disconnector 1 further comprises a plate-shaped contact element 40, which is described in more detail below. Fig. 3, the sliding element 20 is arranged in the first position relative to the housing 10 and forms with the contact element 40 a first receiving area for receiving a first busbar 3a of a first thickness, in particular a thickness of 10 mm.

[0045] The fuse switch disconnector 1 comprises a further sliding element 20, which Fig. 3 is largely concealed. The further sliding element 20 is arranged parallel to the sliding element 20 and spaced from the sliding element 20 in the extension direction of the busbars 3 (Y-direction). The sliding element 20 is arranged on the side section 101a of the housing and has in Fig. 3 in the positive y-direction. The further sliding element 20 is arranged on the opposite side section 101b of the housing 10 and has Fig. 3 in the negative y-direction. Furthermore, the housing 10 has a further guide element 30 for guiding the further sliding element 20 along the guide direction, wherein the further guide element 30 is arranged parallel to the guide element 30 and is spaced from the guide element 30 in the extension direction of the busbars 3 (Y-direction). The contact element 40 has a first contact section 41 and a second contact section 42, which are arranged parallel to one another and are spaced from one another in the extension direction of the busbars 3. The first contact section 41 is opposite the sliding element 20 in the Z-direction, and the second contact section 42 is opposite the further sliding element 20 in the Z-direction. The first contact section 41 and the second contact section 42 are also connected to one another by a connecting section 43 of the contact element 40 (see Fig. 6 and Fig. 7). The contact element 40 is particularly U-shaped.

[0046] Fig. Figure 4 shows a sectional view of the fuse switch-disconnector 1 contacting a first busbar 3a of a first thickness (10 mm). The sectional view shows the sliding element 20 arranged in the first position (and in Fig. 4 is largely concealed by the guide element 30), the contact element 40, the spring element 50, and one half 101a of the housing 10. The sliding element 20 and the contact element 40 form a first receiving area for the first busbar 3a. The spring element 50 biases the contact element 40 toward the sliding element 20 (in the negative Z direction) in order to clamp and contact the first busbar 3a inserted into the first receiving area. In this arrangement, the sliding element 20 and the guide element 30 are arranged one above the other or congruently.

[0047] Fig. 5 shows a sectional view of the fuse switch disconnector 1 contacting a second busbar 3b of a second thickness (5 mm) that is smaller than the first thickness. The sectional view shows the sliding element 20 arranged in the second position, the contact element 40, the second busbar 3b, the spring element 50, and the half 101a of the housing 10. The sliding element 20 and the contact element 40 form a second receiving area for the second busbar 3b. The spring element 50 biases the contact element 40 toward the sliding element 20 to contact the second busbar 3b inserted into the second receiving area. In this arrangement, the sliding element 20 and the guide element 30 are offset from one another in the guide direction. In particular, the sliding element 20 protrudes relative to the guide element 30 in the positive Z direction.

[0048] In Fig. 4 and Fig. 5, the electrical contact is ensured by the spring element 50, which presses the metal contact (contact element) 40 onto the respective busbar 3a, 3b. The spring element 50 is only tensioned by approximately 1 mm when mounted on the busbar system. Since the distance between the first position and the second position is 5 mm in this embodiment (corresponding to the difference between the first thickness of the first busbar, 10 mm, and the second thickness of the second busbar, 5 mm), the distance between the first and second positions is thus five times the stroke of the spring element 50.

[0049] Fig. Figure 6 shows the fuse switch disconnector 1, in which the sliding element 20 is locked in the first position, with a representation of the force required to move the sliding element 20 from the first position to the second position, as well as a detailed view of a locking lug 21 of the sliding element 20. The guide element 30 has a first locking edge 31 and a second locking edge 32. In Fig. 6, the sliding element 20 is in the first position and the locking lug 21 is locked to the first locking edge 31 in order to lock the sliding element 20 in the first position. The guide element 30 further has a first recess 33, which is delimited by the first locking edge 31. In this case, the locking lug 21 engages positively in the first recess 33. The locking lug 21 can be pressed out of the first recess 31 by an external force acting on the sliding element 20 in the positive Z direction in order to release the locking of the sliding element 20 in the first position. This force to be applied is in Fig. 6 by vertical arrows. Thus, the sliding element can be adjusted from 10 mm busbars 3a to 5 mm busbars 3b. As can be seen in the detailed view, the locking lug 21 is limited in the negative Z direction by a stop surface 211, which runs perpendicular to the Z direction and rests against the first locking edge 31 in order to prevent movement of the locking lug 21 in the negative Z direction. Furthermore, the locking lug 21 is limited in the positive Z direction by a bevel 212, wherein the bevel 212 encloses an angle of less than 45° with the Z direction. To adjust the sliding element 20 from the position for a 10 mm busbar to a 5 mm busbar, the sliding element 10 can thus be pushed directly upwards (in the positive Z direction). The bevelled locking lug 21 is pushed out of the first recess 33 in the housing 10 and engages again at the second locking edge 32 for the 5 mm busbar. Fig. 6 also shows the plate-shaped contact element 40 with the first contact section 41, the second contact section 42 and the connecting section 43.

[0050] Fig. Figure 7 shows the fuse switch disconnector 1, in which the sliding element 20 is locked in the second position, with a representation of the force to be applied to move the sliding element 20 from the second position to the first position, as well as a detailed view of the locking lug 21 of the sliding element 20. In Fig. 7, the sliding element 20 is in the second position and the locking lug 21 is locked to the second locking edge 32 in order to lock the sliding element 20 in the second position. The guide element 30 further has a second recess 34 which is delimited by the second locking edge 32. The locking lug 21 engages in the second recess 34. As can be seen in the detailed view, the stop surface 211 rests against the second locking edge 32 in order to prevent a movement of the locking lug 21 in the negative Z-direction. The locking lug 21 can be moved by an external force which acts perpendicular to the guide direction and perpendicular to the second locking edge 32 (i.e. parallel to the Y-direction) on the portion of the sliding element 20 which protrudes in the Z-direction relative to the guide element 30 (see also Fig.5), in the Y direction beyond the second locking edge 32 or offset against the second locking edge 32 in order to move the locking lug 21 out of the second recess 34. This force to be applied is represented by the horizontal double arrow. The sliding element 20 can then be moved by a second external force towards the first position (in the negative Z direction), as represented by the vertical arrows, and the locking of the sliding element 20 in the second position can thus be released. When no external force acts on the sliding element 20 in the Y direction, the locking lug 21 can then engage in the first recess 31. In other words, when converting the device for a busbar system with a thickness of 10 mm, as when converting to a 5 mm busbar system, each sliding element 10 on the device 1 is adjusted again.For this purpose, the underside of the locking lug 21 of the sliding element 10 is pushed over the locking mechanism 32. This is achieved by the user pushing the sliding elements 20 outward and downward. List of reference symbols 1 fuse switch disconnector 3 busbar 3a first busbar 3b second busbar 10 housings 20 sliding element, slider 21 locking lug 30 guide element 31 first locking edge 32 second locking edge 33 first recess 34 second recess 40 contact element 41 first contact section 42 second contact section 43 connecting section 50 spring element 101a, 101b side section, housing half 211 Stop surface 212 Bevel

Claims

[1] Fuse switch-disconnector (1) for busbars (3) of different thicknesses, the fuse switch-disconnector (1) comprising: a housing (10); a first sliding element (20) which is arranged to be movable back and forth relative to the housing (10) between a first position and a second position and which can be locked in the first position and in the second position, respectively; a contact element (40) which is arranged to be movable relative to the housing (10); and a spring element (50); wherein the first sliding element (20) and the contact element (40) are configured to define a first receiving area for a first busbar (3a) of a first thickness when the first sliding element (20) is arranged in the first position, and a second receiving area for a second busbar (3b) of a second thickness, which is smaller than the first thickness, when the first sliding element (20) is arranged in the second position; and wherein the spring element (50) is designed such that it pretensions the contact element (40) in the direction of the first sliding element (20) in order to contact a first busbar (3a) insertable into the first receiving area and to contact a second busbar (3b) insertable into the second receiving area. [2] Fuse switch disconnector (1) according to claim 1, wherein the housing (10) comprises a first guide element (30) for guiding the first sliding element (20) along a guide direction between the first and the second position. [3] Fuse switch disconnector (1) according to claim 2, wherein the first guide element (30) has a first latching edge (31) and a second latching edge (32); and wherein the first sliding element (20) comprises a latching nose (21) which is configured to latch onto the first latching edge (31) in order to latch the first sliding element (20) in the first position, and which is configured to latch onto the second latching edge (32) in order to latch the first sliding element (20) in the second position. [4] Fuse switch disconnector (1) according to claim 2 or 3, wherein the first guide element (30) has a first recess (33) which is delimited by the first locking edge (31), so that when the locking lug (21) locks onto the first locking edge (31), the locking lug (21) engages in the first recess (33). [5] Fuse switch disconnector (1) according to claim 4, wherein the locking lug (21) and the first recess (33) are designed such that, when the first sliding element (20) is locked in the first position, the locking lug (21) can be pushed out of the first recess (33) by an external force acting on the first sliding element (20) in the direction from the first position to the second position in order to release the locking of the first sliding element (20) in the first position. [6] Fuse switch disconnector (1) according to claim 5, which is further configured such that, when the first sliding element (20) is latched in the second position, the latching nose (21) can be pushed in the direction of the first external force beyond the second latching edge (32) by a first external force acting perpendicular to the guide direction and perpendicular to the second latching edge (32) on a portion of the first sliding element (20) that protrudes in the guide direction relative to the first guide element (30), and then the first sliding element (20) can be released from the latching in the second position and moved in the direction of the first position by a second external force acting on the first sliding element (20) in the direction from the second position to the first position. [7] Fuse switch disconnector (1) according to one of the preceding claims, wherein the first sliding element (20) is plate-shaped. [8] Fuse switch disconnector (1) according to one of the preceding claims, wherein, when the first sliding element (20) is arranged in the first position, the first sliding element (20) and the guide element (30) are arranged one above the other; and when the first sliding element (20) is arranged in the second position, the first sliding element (20) and the first guide element (30) are arranged offset from one another in the guide direction. [9] Fuse switch disconnector (1) according to one of the preceding claims, wherein the first sliding element (20) has a surface with one or more grooves (201) and / or notches which run perpendicular to the guide direction. [10] Fuse switch disconnector (1) according to one of the preceding claims, wherein a distance between the first and the second position of the first sliding element (20) is greater than a stroke of the spring element (50), wherein preferably the distance between the first and the second position is at least twice, at least three times or at least five times the stroke. [11] Fuse switch disconnector (1) according to one of the preceding claims, wherein the fuse switch disconnector (1) comprises a second sliding element (20) which is arranged parallel to the first sliding element (20) and is spaced from the first sliding element (20) in an extension direction of the busbars (3). [12] Fuse switch disconnector (1) according to claim 11, wherein the housing (10) comprises a second guide element (30) for guiding the second sliding element (20) along the guide direction, wherein the second guide element (30) is arranged parallel to the first guide element (30) and is spaced from the first guide element (30) in the extension direction of the busbars (3). [13] Fuse switch disconnector (1) according to claim 11 or 12, wherein the first sliding element (20) and the second sliding element (20) are arranged on opposite side portions (101a, 101b) of the housing (10). [14] Fuse switch disconnector (1) according to one of the preceding claims, wherein the contact element (40) is plate-shaped. [15] Fuse switch disconnector (1) according to claim 14, wherein the contact element (40) comprises a first contact portion (41) and a second contact portion (42) which are arranged parallel to each other and spaced apart from each other in the extension direction of the busbars (3), and a connecting portion (43) for connecting the first contact portion (41) to the second contact portion (42).

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