The present disclosure provides a conductive member for a circuit breaker high voltage portion conductor assembly, the conductive member including a body with a transfer portion and a coupling portion. The body transfer portion has an electro-thermally efficient contour. That is, the body transfer portion has an electrically efficient contour and a thermally efficient contour. The body transfer portion includes a number of slots defining fins. In this configuration, the body transfer portion distributes current generally evenly across a cross-sectional area of the conductive member body. Further, the fins provide heat dissipation via convection.

An arc chute includes a pair of opposing side walls and a non-magnetic body. The side walls are formed of an electrically insulating material. The non-magnetic body includes an open area and a plurality of slots through which to facilitate gas flow. The arc chute also includes a back wall arranged on a back side of the non-magnetic body and including at least one first insulator and at least one magnet. The at least one first insulator is arranged between the at least one magnet and the open area and configured to electrically isolate the magnet from the non-magnetic body. The magnet is configured to generate a magnetic field to redirect an arc in the open area toward one of the side walls.

A device for switching an electric current, including a switching block including a mobile electrical contact and a linking unit, integral, as well as an actuation block including an actuator and a mobile pallet. The device includes an improved connection interface, including a pivoting shaft, including an eccentric fastener element, delimiting an internal housing able to accommodate a head of the linking unit. The connection interface can be switched, by rotating the shaft, between a locked state wherein the head of the linking unit is held in the internal housing of the eccentric fastener unit so as to hold the mobile pallet integral in translation with the linking unit, and an unlocked state, wherein the head of the linking unit can move freely in translation with respect to the eccentric fastener element so as to uncouple the mobile pallet from the linking unit.

A device for switching an electric current, including a switching block including a mobile electrical contact and a linking unit, integral, as well as an actuation block including an actuator and a mobile pallet. The device includes an improved connection interface, including a pivoting shaft, including an eccentric fastener element, delimiting an internal housing able to accommodate a head of the linking unit. The connection interface can be switched, by rotating the shaft, between a locked state wherein the head of the linking unit is held in the internal housing of the eccentric fastener unit so as to hold the mobile pallet integral in translation with the linking unit, and an unlocked state, wherein the head of the linking unit can move freely in translation with respect to the eccentric fastener element so as to uncouple the mobile pallet from the linking unit.

An insulating-material housing has first and second current path region next to each other and each having a first receiving space for a short-circuit tripping apparatus, a second receiving space for a switching contact and a third receiving space for an arc-quenching apparatus. The two first receiving spaces are arranged in a front side and a respective narrow side of the housing. The two second receiving spaces are arranged centrally between the two first receiving spaces. The third receiving spaces are arranged between a fastening side of the housing and the respectively associated first receiving space. A fourth receiving space for an additional functional assembly is next to the first and/or third receiving space of the first current path region in a normal direction of the broad sides. The compact configuration allows the circuit breaker to be expanded by an additional functional assembly in the fourth receiving space.

An overcurrent tripping device includes a tripping conductor connected to the main circuit; a fixed core inside which the tripping conductor penetrates and which is excited by current flowing through the tripping conductor; a movable core which is arranged to be opposed to the fixed core with a magnetic gap therebetween, and which forms a magnetic circuit in cooperation with the fixed core, and moves by being attracted by the fixed core when overcurrent flows through the tripping conductor; and a shaft fixed to the movable core to guide the movement of the movable core, and linked to the tripping mechanism of the circuit breaker, wherein the fixed core has a narrow gap formed in such a direction as to cross the magnetic circuit, so that magnetic saturation is suppressed by the narrow gap.

Provided is a multi-pole molded case circuit breaker (MCCB) with an insulation barrier for a rotary pin, in which an insulation barrier is provided in a rotary pin for inter-phase power transmission to prevent dielectric breakdown. The multi-pole MCCB includes a shaft assembly having a movable contactor and having a plurality of rotary pin holes formed in a penetrating manner, a base assembly to which the shaft assembly is rotatably accommodated to be coupled, a switching mechanism coupled to an upper portion of the base assembly and rotating the shaft assembly, a plurality of rotary pins coupled to the plurality of rotary pin holes in a penetrating manner, and an insulation barrier formed of an insulating material and covering the plurality of rotary pins.

A circuit breaker assembly includes a circuit breaker cassette having a connector receiving zone, and a housing receptive of the circuit breaker cassette. The housing includes a connector mounting member. A circuit breaker connector member snap-fittingly extends into the connector receiving zone through the connector mounting member joining the circuit breaker cassette and the housing.

A disconnecting electrical apparatus includes a disconnecting block, including elements for disconnecting an electric current each able to be actuated with a coupling member, to switch this disconnecting element to a blocking state or a state allowing the electric current to pass, an actuator block, provided with a controllable electromagnet suitable for generating an electromagnetic force, a mobile container provided with a magnetic plate, which displaces the coupling members, under the effect of the electromagnetic force, so as to switch the disconnecting elements. The apparatus also includes a connection interface inserted between the disconnecting block and the actuator block, the mobile container being housed inside the connection interface.

This electrical switching apparatus includes a protection casing, at least one switching member suitable for switching between a first position permitting the passage of a current and a second position preventing the passage of the current, a mechanism for control of the or of each switching member, and at least one auxiliary module disposed in the casing, the auxiliary module being removable with respect to the casing and configured to implement a function associated with the control mechanism. The electrical switching apparatus includes a mechanical referencing member common to the control mechanism and to each auxiliary module, for the positioning of the control mechanism and of each auxiliary module in the casing.