A connecting apparatus is for connecting a first component to a second component in an interlocking manner. The first component includes a flexible limb having a latching lug which can latch with a projection on the second component in order to connect the first component to the second component in a releasable manner without using a tool. For the purpose of connection in a releasable manner without using a tool, the flexible limb runs in a guide of the second component, which guide allows the flexible limb only to move in the direction which is prespecified by the guide, and the latching lug and the projection are at a distance from one another in the state in which said components are connected in an interlocking manner. An electrical switch is also disclosed, including the connecting apparatus; a side wall; and a pole cassette.

A circuit breaker crossbar assembly includes a crossbar having a first and second segment, the first and second segment each operatively coupled to a respective moveable contact arm assembly. Also included is a coupling segment disposed between the first and second segment, the crossbar and the coupling segment rotatable about an axis. Further included is at least one support assembly operatively coupled to the coupling segment. The support assembly includes a bushing coupled to the coupling segment and rotatable with the crossbar and the coupling segment. The support assembly also includes a support bracket configured for affixation to a stationary structure and disposed adjacent to the bushing, the bushing rotatable relative to the support bracket. The support assembly further includes a fixing bracket engaged with the support bracket and disposed adjacent to the bushing, the bushing rotatable relative to the fixing bracket.

The present disclosure relates to a circuit breaker having a main circuit unit cover and, more particularly, to a circuit breaker having a removable main circuit unit cover so as to be applicable to a change in rated capacity. A circuit breaker according to one embodiment of the present disclosure comprises: a main circuit unit connected to a power source and a load; a main circuit unit cover which insulatively covers the rear surface of the main circuit unit; a main circuit unit terminal connected to the main circuit unit and exposed to the outside through the main circuit unit cover; and a terminal protection member detachably coupled to the main circuit unit cover and insulatively covering the main circuit unit terminal.

A fuse unit includes: a bus bar made of a conductor and provided with a cuttable portion; a case body supporting two points sandwiching the cuttable portion; a cutting portion made of an insulator and disposed in a first space in an internal space of the case body on one side with respect to the bus bar; and a reconnecting portion made of a conductor and disposed in a second space in the internal space on a side of the bus bar opposite to the first space. The cutting portion includes a tip portion that cuts the bus bar into a first portion and a second portion at the cuttable portion. The tip portion is movable into the second space. The reconnecting portion includes a first connecting portion in contact with the first portion and a second connecting portion in contact with the second portion.

A contactor is proposed, which includes a stationary contact bracket having a main body and a plurality of terminals extending from the main body and configured to be electrically connected with wires, each of the plurality of terminals including a plate-shaped terminal body and a terminal hole penetrating through the terminal body; a junction box having a plurality of wiring holes and assembled to the stationary contact bracket, wherein each of the plurality of terminals is located in a corresponding wiring hole; wherein the surface of the junction box away from the stationary contact bracket is provided with a groove, and the groove is located between the plurality of terminals.

Control Unit for an Electrical Circuit Breaker and Associated Electrical Circuit Breaker

This control unit (20) presents a front face (22) extending on a front plane (P22) where a connection housing (301), closable by a cover (308), opens and which is configured to receive a connection module (300) in an assembled position. Contact pads (36) are arranged at the bottom of the housing. The connection module presents a front face (311A) with an output connector (316). In the assembled position, the closed cover extends a creepage distance between the output connector and the front plane beyond a class 1 isolation distance under a voltage less than or equal to 690 V. In the absence of the connection module, the closed cover extends a clearance distance between each contact pad and the front plane (P22) beyond a class 2 isolation distance under a voltage greater than 690 V.

The invention relates to the field of electrical engineering and fire-fighting, and more particularly to a differential circuit breaker comprising a housing, and a module (12) that contains an aerosol-forming or gas-forming composition. The module (12) projects beyond the housing of the circuit breaker and has, on its projecting portion, a self-combusting heat-sensitive igniter (22) with a trigger temperature that is lower than the trigger temperature of the module (12), the circuit breaker further comprising a heat-sensitive shutdown device (8), a contact group (18) for supplying an external trigger signal, an activation sensor (21), and a button (25) for manually activating an electrical igniter. The technical result consists in increasing the timeliness of an initial fire-extinguishing action and more efficiently impeding the spread of fire in an enclosed space at the same time as breaking an electrical circuit, the device being capable of breaking a circuit in the event of a short circuit or a prolonged overload or current leakage without triggering an aerosol or gas-forming fire-extinguishing system, by operating as a typical differential circuit breaker.