Abstract: A manual opening mechanism for use with an isolation switch of a circuit interrupter is fully integrated into the circuit interrupter. The manual opening mechanism includes a rotating handle that is accessible from the front panel of the circuit interrupter. Rotating the handle applies force to the centerline of the isolation switch drive shaft, which prevents uneven loading and thus optimizes robustness during manual opening of the isolation switch. In addition, the handle has an ergonomic design, and is proportioned to minimize the force that an operator must apply to the handle in order to open the isolation switch.

Abstract: 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.

Abstract: A manual opening assembly includes a manual actuator assembly. The manual actuator assembly includes a handle assembly and a number of operating levers. The handle assembly includes a handle member structured to be movably coupled to a circuit breaker housing assembly and to move between an operating position and an opening position. The handle member is operatively coupled to the number of operating levers. The number of operating levers are movably coupled to a circuit breaker housing assembly. The operating levers are structured to move between an operating position, wherein the operating levers do not operatively engage a linkage assembly, and an opening position, wherein the operating levers operatively engage the linkage assembly and move the linkage assembly from a closed, second configuration to an open, first configuration.

Abstract: A manual opening assembly includes a manual actuator assembly. The manual actuator assembly includes a handle assembly and a number of operating levers. The handle assembly includes a handle member structured to be movably coupled to a circuit breaker housing assembly and to move between an operating position and an opening position. The handle member is operatively coupled to the number of operating levers. The number of operating levers are movably coupled to a circuit breaker housing assembly. The operating levers are structured to move between an operating position, wherein the operating levers do not operatively engage a linkage assembly, and an opening position, wherein the operating levers operatively engage the linkage assembly and move the linkage assembly from a closed, second configuration to an open, first configuration.

Abstract: 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.

Abstract: A circuit breaker installation including a frame assembly and a circuit breaker assembly is provided. The frame assembly includes a conductor assembly and the frame assembly defines an enclosed space. The frame assembly conductor assembly includes a primary contact assembly and a movable secondary contact assembly. The circuit breaker assembly is movably disposed in the frame assembly enclosed space. The contact assemblies are configurable electrical components. The configurable electrical components move between a connect configuration, a test configuration, and, a disconnect configuration.

Abstract: A circuit breaker installation including a frame assembly and a circuit breaker assembly is provided. The frame assembly includes a conductor assembly and the frame assembly defines an enclosed space. The frame assembly conductor assembly includes a primary contact assembly and a movable secondary contact assembly. The circuit breaker assembly is movably disposed in the frame assembly enclosed space. The contact assemblies are configurable electrical components. The configurable electrical components move between a connect configuration, a test configuration, and, a disconnect configuration.

Abstract: 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.

Abstract: An enclosure housing assembly for an electrical switching apparatus is provided. The enclosure housing assembly includes a sidewall assembly, a movable carriage assembly, a ground bus bar assembly and a movable terminal assembly with an extendable conductor assembly. The sidewall assembly includes a number of sidewalls defining an enclosed space. The movable carriage assembly is movable between a withdrawn, first position. Wherein the movable carriage assembly is disposed partially outside the enclosure sidewall assembly enclosed space, and an inserted, second position, wherein the movable carriage assembly is disposed substantially inside the enclosure sidewall assembly enclosed space. The ground bus bar assembly is coupled to the first sidewall. The movable terminal assembly is coupled to the movable carriage assembly whereby the movable terminal assembly moves with the movable carriage assembly.

Abstract: Roll on floor (ROF) circuit breakers include a plurality of support wheels configured to contact a support surface as the ROF circuit breaker is moved between locations. The support wheels have a rocker configuration whereby weight of the ROF circuit breaker is transferred between different sets of the wheels during movement to thereby facilitate ease of movement.

Abstract: An enclosure housing assembly for an electrical switching apparatus is provided. The enclosure housing assembly includes a sidewall assembly, a movable carriage assembly, a ground bus bar assembly and a movable terminal assembly with an extendable conductor assembly. The sidewall assembly includes a number of sidewalk defining an enclosed space. The movable carriage assembly is movable between a withdrawn, first position. wherein the movable carriage assembly is disposed partially outside the enclosure sidewall assembly enclosed space, and an inserted, second position, wherein the movable carriage assembly is disposed substantially inside the enclosure sidewall assembly enclosed space. The ground bus bar assembly is coupled to the first sidewall. The movable terminal assembly is coupled to the movable carriage assembly whereby the movable terminal assembly moves with the movable carriage assembly.

Abstract: Roll on floor (ROF) circuit breakers include a plurality of support wheels configured to contact a support surface as the ROF circuit breaker is moved between locations. The support wheels have a rocker configuration whereby weight of the ROF circuit breaker is transferred between different sets of the wheels during movement to thereby facilitate ease of movement.