A semiconductor device includes a semiconductor package including an encapsulant body of electrically insulating encapsulant material, a semiconductor die encapsulated by the encapsulant body, and two or more leads that are each electrically connected to the semiconductor die, and an ESD protection element that is electrically connected between the two or more leads, and the ESD protection element is configured to be electrically disconnected from the two or more leads by an external stimulus applied to ESD protection element that is non-destructive to the semiconductor package.

A circuit interrupter adapted to be detachably connected to a rail system includes a housing having a notch disposed thereon adapted to receive a first leg of the rail system. An engagement member having a notch disposed therein adapted to receive a second leg of the rail system is slideably carried by the housing such that the notch in the engagement member is moveable in a first plane toward and away from the notch in the housing between an engaged position and a disengaged position. An actuation member is slideably carried by the housing and is moveable in a second plane, different than the first plane, between an actuated position and an unactuated position, movement of the actuation member in the second plane being translated into movement of the engagement member in the first plane.

A circuit breaker pole for low voltage or medium voltage operation includes: a main body section; a first end section; and a second end section. The first end section is fixedly connectable to a wall of an enclosure. The second end section is fixedly connectable to the wall of the enclosure.

A circuit breaker with a circuit breaker housing that includes a switch-on button hole and a switch-off button hole, a button mechanism that includes a switch-on button and a switch-off button, the switch-on button including a switch-on button operating end slidably arranged in the said switch-on button hole, the switch-off button including a switch-off button operating end slidably arranged in the switch-off button hole. While the switch-on button operating end is being pressed toward the inside of the circuit breaker housing to enable the circuit breaker to switch on, the switch-off button operating end moves toward the outside of the circuit breaker housing, and while the switch-off button operating end is being pressed toward the inside of the circuit breaker housing to enable the circuit breaker to switch off, the switch-on button operating end moves toward the outside of the circuit breaker housing.

A circuit breaker that includes a circuit breaker housing, a button mechanism arranged inside the circuit breaker housing, an operating mechanism connected with the button mechanism, a movable contact connected with the operating mechanism, a static contact co-operated with the movable contact, the button mechanism being operable to enable the circuit breaker to switch on/switch off by means of the operating mechanism; the circuit breaker also includes an electric mechanism arranged inside the circuit breaker housing, the electric mechanism is drivingly co-operated with the button mechanism or the operating mechanism, the electric mechanism can actuate the circuit breaker to switch on/switch off by means of the operating mechanism, or the electric mechanism can actuate the circuit breaker to switch on/switch off by means of the cooperation of the button mechanism.

A circuit breaker that includes a circuit breaker housing, a button mechanism arranged inside the circuit breaker housing, an operating mechanism connected with the button mechanism, a movable contact connected with the operating mechanism, a static contact co-operated with the movable contact, the button mechanism being operable to enable the circuit breaker to switch on/switch off by means of the operating mechanism; the circuit breaker also includes an electric mechanism arranged inside the circuit breaker housing, the electric mechanism is drivingly co-operated with the button mechanism or the operating mechanism, the electric mechanism can actuate the circuit breaker to switch on/switch off by means of the operating mechanism, or the electric mechanism can actuate the circuit breaker to switch on/switch off by means of the cooperation of the button mechanism.

A panelboard assembly for a harsh and/or hazardous environment is provided. The panelboard assembly includes a core assembly. The core assembly includes a main breaker assembly configured to be electrically connected to a power supply, and a branch breaker assembly electrically connected to the main breaker assembly and configured to be electrically connected to one or more loads, and a power distribution heatsink assembly. The power distribution heatsink assembly includes an electrically-conductive heatsink having a first end and an opposing second end, the first end electrically connected to the core assembly and an electrically-nonconductive isolator electrically insulating the heatsink.

An improved circuit breaker is disclosed herein. The improved circuit breaker includes one or more main contacts and only one resistor contact. The only one resistor contact is connected in parallel with at least one of the one or more main contacts.

An improved circuit breaker is disclosed herein. The improved circuit breaker includes one or more main contacts and only one resistor contact. The only one resistor contact is connected in parallel with at least one of the one or more main contacts.

A circuit breaker can include a moveable electrical contact configured to be moved between an open position and a closed position, and a lever assembly configured to prevent the progressive closing of the moveable electrical contact to the closed position such that the lever assembly is configured to cause snap action closing of the moveable electrical contact at a charged position of a motorized slider.