A switching device is provided. The switching device includes a housing including a base and a switching device cover coupled to the base, a line side terminal positioned on a line side of the housing, a load side terminal positioned on a load side of the housing, wherein the line side is opposite the load side, a first terminal cover coupled to the switching device cover proximate the line side, and a second terminal cover coupled to the switching device cover proximate the load side, wherein the first terminal cover is movable between a closed position and an open position, wherein the first terminal cover is attached to said switching device cover in both the closed and open positions, and wherein the second terminal cover is attached to the switching device cover in both the closed and open positions.

A protection device comprises a resin base, PTC component, bimetal component, arm and upper plate which are housed in a resin housing wherein the base includes a terminal integrated with the base by insert molding. A resin cover is formed by insert molding to cover the PTC component, bimetal component, arm and upper plate which are superposed in this order over the terminal within a space in the base. The space in the resin base is substantially closed by the upper plate, the base and the cover are integrally bonded to define the resin housing, the terminal and the arm are electrically connected in series in a normal state, and in an abnormal state where the bimetal component is activated, the terminal and the arm are electrically cut off, while the terminal, PTC component, bimetal component, and arm are electrically connected in series in this order.

The present invention relates to a trip device for a molded case circuit breaker and, more specifically, to an electronic trip device for a molded case circuit breaker. The electronic trip device for a molded case circuit breaker, according to one embodiment of the present invention, comprises: a trip part case having a plurality of phases; a trip part terminal provided at the rear surface part of the trip part case and provided for each phase; and a voltage sensing conductor coupled between the rear surface part and the trip part terminal and provided for each phase, wherein the voltage sensing conductor provided for each phase is formed to have the same shape and the same size.

A circuit breaker with improved trip unit fixation is disclosed. Another circuit breaker and a system also perform the functions of the circuit breaker. A circuit breaker includes a frame and a trip unit mounted in the frame. The trip unit includes a terminal for securing a wire to the trip unit. One of a wall of the frame and the trip unit include a protrusion and the wall of the frame or the trip unit without the protrusion includes an opening. The protrusion conforms to the opening and the protrusion and opening are positioned to oppose movement of the trip unit in a direction of a force resulting from securing the wire in the terminal.

A circuit breaker system has a circuit breaker with a circuit breaker communication unit. A display unit contains a display housing, and the circuit breaker and the display unit are configured such that the display unit is latched to the circuit breaker. The circuit breaker and the display unit, in the latched state, are connected to one another by a plug connection, such that data of the circuit breaker are displayable on the display unit. A display holder is provided, containing a holder housing and a holder communication unit. The display holder is configured such that the display unit can be latched into the display holder, that the display holder and the display unit, in the latched state, are connected to one another by an electrical plug connection, and that the display holder is configured such that the data of the circuit breaker are displayed in the latched state.

A circuit breaker with improved trip unit fixation is disclosed. Another circuit breaker and a system also perform the functions of the circuit breaker. A circuit breaker includes a frame and a trip unit mounted in the frame. The trip unit includes a terminal for securing a wire to the trip unit. One of a wall of the frame and the trip unit include a protrusion and the wall of the frame or the trip unit without the protrusion includes an opening. The protrusion conforms to the opening and the protrusion and opening are positioned to oppose movement of the trip unit in a direction of a force resulting from securing the wire in the terminal.

The present invention relates to a trip device for a molded case circuit breaker and, more specifically, to an electronic trip device for a molded case circuit breaker. The electronic trip device for a molded case circuit breaker, according to one embodiment of the present invention, comprises: a trip part case having a plurality of phases; a trip part terminal provided at the rear surface part of the trip part case and provided for each phase; and a voltage sensing conductor coupled between the rear surface part and the trip part terminal and provided for each phase, wherein the voltage sensing conductor provided for each phase is formed to have the same shape and the same size.

A trip for electrical switching device including a protective housing, first electrical connection terminals, and a supply module including at least one transformer and second input and output terminals able to be connected to the first connection terminals according to a direction of connection. The supply module is able to generate a supply voltage on the basis of an input voltage received between the second input terminals and to deliver the supply voltage between the second output terminals. The supply module is movable with respect to the protective housing.

Shaft assemblies include an elongate shaft having a plurality of closely spaced apart external notches with wall segments having a greater outer diameter than an outer diameter of the notches residing therebetween and at least one self-retaining locking ring that engages one of the notches to axially lock into position on the shaft and provide a pull out force that is between about 100 lbf to about 1000 lbf. The notches can have a width that is between about 0.010 inches to about 0.020 inches, on average, and a depth that is between about 0.001 inches to about 0.010 inches, on average.

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.