The present disclosure relates to an arc extinguishing assembly including a sealing member and a circuit breaker including same. The sealing member is pressed and elastically deformed between coupling surfaces of the arc extinguishing assembly and the circuit breaker, and accordingly, a gap between the coupling surfaces of the arc extinguishing assembly and the circuit breaker is sealed. Accordingly, when an arc is generated, a temporary pressure increase in the circuit breaker increases and the arc can be smoothly extended.

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.

A removable switching element for switching an electric current for an electrical switching device includes a housing; first and second fixed electrical conductors; a mobile electrical conductor that can be moved between a first position, in which the mobile electrical conductor electrically connects the first and second fixed electrical conductors; and a second position, in which the mobile electrical conductor is electrically isolated from the first and second fixed electrical conductors. The housing includes two windows passing therethrough, one being located facing an area of contact between the mobile conductor and the first fixed electrical conductor and the other being located facing an area of contact between the mobile conductor and the second fixed electrical conductor.

A shunt tab assembly is for an electrical switching apparatus, such as a circuit breaker. The electrical switching apparatus includes a housing, separable contacts enclosed by the housing, an operating mechanism for opening and closing the separable contacts, and a number of shunts. The operating mechanism includes a trip unit. The shunt tab assembly includes a shunt tab structured to be electrically connected to the shunts, a biasing element structured to bias the shunt tab toward a predetermined position with respect to the housing, and a fastener structured to mechanically couple and electrically connect the trip unit to the shunt tab.

An enclosure for the operating mechanism of a circuit breaker, this mechanism including a main shaft and secondary shafts, and a spring to actuate the mechanism. This enclosure includes a parallelepiped base having an open face and including a bottom wall opposite to its open face, this bottom wall having holes to receive bearings carrying the shafts; a supporting part including a main wall to be mounted at the open face of the base, the main wall including holes to receive bearings carrying the other extremities of the shafts; a cover to close the supporting part.

A mechanism coupling structure of a molded-case circuit breaker according to an embodiment of the present disclosure including a shaft to one side of which a movable contactor is coupled, and on a part of which a rotating pinhole is formed in a penetrating manner; a base assembly into which the shaft is rotatably accommodated and coupled, a switch mechanism coupled to an upper portion of the base assembly and exposed with a first lower link and a second lower link at a lower side thereof, and a rotating pin coupled in a penetrating manner to the first lower link, second lower link and rotating pinhole may be provided therein, wherein the rotating pin has a protruding portion for release prevention at one end thereof.

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 modular slot motor assembly and arc plate assembly combination for a circuit breaker is disclosed. The modular slot motor assembly is positioned proximate the arc plate assembly by lockingly securing it to a subcomponent housing in order to better provide an enhanced separation of the contact arms. During a short circuit event the modular slot motor assembly provides added acceleration to a moving contact arm. To protect the modular slot motor assembly from damage, an insulating casing is applied to at least a portion of the modular slot motor assembly.

An exemplary electric switch mounting arrangement includes a housing and a stationary contact to be mounted to an aperture in a wall of the housing. The arrangement having a compensation component within the interior area of the aperture for allowing stationary contacts of two different sizes to be mounted to the aperture, which compensation component includes one or more projections formed on the housing or the stationary contact and/or one or more recesses formed on the housing or stationary contact for receiving the one or more projections.

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.