An electronically switching rail-mounted device for a mounting or top hat rail with an insulating material housing having a front side, a fastening side opposite the front side, and first and second narrow and broad sides connecting the front and securing side. A controller with a power electronics system in a first receiving space formed in the insulating material housing configured to electronically interrupt an electrical line. A cooling unit in a second receiving space formed in the insulating material housing for cooling the power electronics system. The second receiving space having a first boundary surface directly adjacent to the first receiving space and a second boundary surface, different from the first boundary surface, formed by the securing side and/or one of the broad sides. The heat generated by the power electronics system is directly received by the cooling unit and discharged.

The present invention discloses a ground fault circuit interrupter including a lower cover, an upper cover, a base seat, a tripping mechanism, a resetting key, a test key, a pair of movable contacts, a pair of first static contacts fixed on the base seat, a pair of second static contacts fixed on the supporting frame, a first locking mechanism and a control circuit board; the base seat includes a supporting frame, the tripping mechanism includes an elastically-movable main frame, a spring, a coil fixing frame connected to the main frame, a coil encircling said coil fixing frame, an iron core arranged inside said coil fixing frame and said coil, a horizontal sliding member fixedly connected with one end of the iron core, a permanent magnet arranged on the other end of the main frame; the movable contacts are elastically installed on the main frame.

The present disclosure relates to a semiconductor circuit breaker and, more specifically, to a semiconductor circuit breaker having a detachable interface module. The semiconductor circuit breaker according to an embodiment of the present disclosure comprises: a circuit breaker body connected to a main circuit; and an interface module which is independent from the circuit breaker body, wherein the circuit breaker body comprises: a first reception part disposed on the outer surface of the circuit breaker body; and a blocking part including a power semiconductor device connected to the main circuit to block the main circuit when an overcurrent occurs, and the interface module comprises an operation part for controlling the blocking part, and is detachably coupled to the first reception part.

A load center includes: a housing including a base and sidewalls; one or more circuit interrupters including a first circuit interrupter having a first type of mounting mechanism and a second circuit interrupter having a second type of mounting mechanism; and a universal circuit interrupter mounting assembly attached to the base and including a mounting frame and line terminals structured to connect the circuit interrupter line terminals and the power source, the mounting frame including (i) a first type mounting connector having a first protrusion and side edges thereof and structured to be coupled to the first type of mounting mechanism and (ii) a second type mounting connector having a second protrusion and transversely spaced-apart legs extending longitudinally therefrom and attached to the side edges of the first type mounting connector, the second type mounting connector being structured to be coupled to the second type of mounting mechanism.

A circuit for a circuit interrupter is provided. The circuit may in include a first SCR configured to receive a first trigger signal at a gate of the first SCR, a second SCR configured to receive a second trigger signal at a gate of the second SCR, and a third SCR configured to receive a third trigger signal at a gate of the third SCR. A cathode of the first SCR may be connected to an anode of the third SCR. A cathode of the second SCR and a cathode of the third SCR may be connected to a ground. Methods of operating a circuit interrupter and a circuit are also provided.

A tripping mechanism includes a magnetic core with first, second and third yokes, the third yoke comprising a yoke through hole; an armature comprising an armature through hole, a leading rod, a spring and means for tensioning the spring, a tripping lever, means for transferring a movement of the armature, wherein the armature is movably placed between the first yoke and the second yoke, wherein the leading rod extends throughout the magnetic core and the armature and is fixed relative to the magnetic core, wherein the leading rod is placed inside the spring and the spring is placed between the armature and the means for tensioning, wherein the spring is configured to push the armature towards the first yoke.

This control unit (20) comprises a casing (30) defining a front plane (P22) where a housing (401), configured to receive a communication module (400) in an assembled position, opens. Contact pads (36) are arranged at the bottom of the housing recessed from the front plane (P22), so that a clearance distance between each contact pad and the front plane is greater than a class 2 isolation distance, according to the IEC 947-1:2019 standard, under a voltage greater than 690 V. The communication module comprises an envelope (410), which delimits a cavity (411), configured to receive a wireless communication card (414) and which in an assembled position of the casing, closes the housing, so that a creepage distance between each contact pad and the front plane is greater than a class 2 isolation distance under a voltage greater than 690 V according to the IEC 947-1:2019 standard.

A plug-in summation current transformer module for insertion into a module-overlapping installation space of a multi-pole rail-mounted device that is formed of a plurality of housing modules has a summation current transformer and primary conductors routed through the tubular summation current transformer. The primary conductors have primary conductor ends. A primary conductor holder for fixing the primary conductor ends is fastened to the summation current transformer and adopts a fixing position for holding the primary conductor ends in an assembling position for insertion into a module-overlapping installation space and a releasing position where the primary conductor ends move transversely into a releasing position allowing the primary conductor ends to join into their contacts in the modules.

An electric circuit breaker device includes an igniter, a rod-like projectile, and a conductor portion for forming a part of an electric circuit, and an insulating closed space. The conductor portion includes a first and second connection portions and a cut portion at an intermediate portion, and is disposed with a surface of the cut portion. The rod-like projectile has an end portion facing the cut portion. The insulating closed space has an opening portion facing the conductor portion, a closed end surface opposite to the opening portion in the housing axial direction, and four side surfaces between the opening portion and the closed end surface. A width (W1) of the opening portion of the insulating closed space and a width (L1) of the end portion of the rod-like projectile have a relationship of W1>L1 and W1L10.25 mm.

An electric circuit breaker device includes a housing, an igniter, a projectile, and a conductor piece including, between a first connection end portion and a second connection end portion, a cutoff portion to be cut by movement of the projectile, in which a boundary portion with the cutoff portion from which the cutoff portion is cut in the first connection end portion of the conductor piece held in the housing is defined as a first cutting edge portion, and a boundary portion with the cutoff portion from which the cutoff portion is cut in the second connection end portion is defined as a second cutting edge portion, and a groove is formed at a position corresponding to the conductor piece crossing an accommodating space and in a predetermined inter-edge inner wall region positioned between the first cutting edge portion and the second cutting edge portion, in an inner wall surface of the housing.