A terminal shield for a circuit breaker, formed of an electrically insulating material, protects an operator from inadvertently touching the load terminal that would otherwise be exposed on the bottom side of the circuit breaker: In accordance with an example embodiment of the invention, the terminal shield is integrated with a toroidally shaped current transformer sensor, to enable measuring the current in a load wire that has been inserted through an aperture in the terminal shield. Preferably there is an access hole in the front portion of the terminal shield, which allows the operator to insert a tool through the front face of the circuit breaker, to tighten the load terminal onto the load wire. The terminal shield with the integrated current transformer sensor enables standardization of load current sensing capability for circuit breakers and further enables ease of installation without clutter in the confined regions of the load center.

A light switch cover includes a base portion defining a central opening and including a first base engagement member and a second base engagement member, a cover pivotally coupled to the base portion, a first cover engagement member positioned on the cover, where the first cover engagement member has a complementary shape to the first base engagement member, and where the first cover engagement member is selectively engaged with the first base engagement member when the cover is in the closed position, and a second cover engagement member positioned on the cover, where the second cover engagement member has a complementary shape to the second base engagement member, and where the second cover engagement member is selectively engaged with the second base engagement member when the cover is in the closed position.

A light switch cover includes a base portion defining a central opening and including a first base engagement member and a second base engagement member, a cover pivotally coupled to the base portion, a first cover engagement member positioned on the cover, where the first cover engagement member has a complementary shape to the first base engagement member, and where the first cover engagement member is selectively engaged with the first base engagement member when the cover is in the closed position, and a second cover engagement member positioned on the cover, where the second cover engagement member has a complementary shape to the second base engagement member, and where the second cover engagement member is selectively engaged with the second base engagement member when the cover is in the closed position.

A rotational push switch includes a bottom shell having a first and a second conductive terminals connected to a power supply, and a third conductive terminal connected to the conductive elastic piece. The conductive elastic piece is mounted in the bottom shell. A switch assembly is mounted on a top shell mounted on the bottom shell. The switch assembly is switched to connect or detach the conductive elastic piece and the second conductive terminal. A cap is mounted on the switch assembly. When the conductive elastic piece is connected to or departed from the second conductive terminal, ON/OFF symbols can be correspondingly seen in a display window of the cap, and a user can recognize an ON/OFF state of the rotational push switch.

A rotational push switch includes a bottom shell having a first and a second conductive terminals connected to a power supply, and a third conductive terminal connected to the conductive elastic piece. The conductive elastic piece is mounted in the bottom shell. A switch assembly is mounted on a top shell mounted on the bottom shell. The switch assembly is switched to connect or detach the conductive elastic piece and the second conductive terminal. A cap is mounted on the switch assembly. When the conductive elastic piece is connected to or departed from the second conductive terminal, ON/OFF symbols can be correspondingly seen in a display window of the cap, and a user can recognize an ON/OFF state of the rotational push switch.

Power switch manipulation apparatuses that allow users to manipulate power switches of FRUs mounted within storage racks in a manner free of a user having to physically reach into the storage rack to manipulate the power switches. One embodiment of the disclosed manipulation apparatus broadly includes a base member that may be rigidly secured to a portion of the frame of a storage rack (e.g., on a side or vertical member adjacent a rear door or opening of the rack at the same or similar height as at least one of the power switches) along with a tool that is movably mounted or mountable to the base member for manipulating a power switch of a FRU mounted in the rack.

A shift assembly structure of switch device includes a connection seat formed with an assembling hole for rotatably connecting with a main body. A latch section is disposed on the bottom of the connection seat for latching and assembling with a wire-connection module. The connection seat has an arm protruding from the connection seat and an (elastic) restriction section formed on the arm. A shift body is assembled in the connection seat. The shift body is formed with a ridge section and a push/press section. When the shift body is moved from a first position to a second position, the ridge section is permitted to directly pass through the restriction section into a locked state. After the push/press section pushes the restriction section, the main body is unlocked from the connection seat, whereby the assembly of the main body and the connection seat is controllable.

A shift assembly structure of switch device includes a connection seat formed with an assembling hole for rotatably connecting with a main body. A latch section is disposed on the bottom of the connection seat for latching and assembling with a wire-connection module. The connection seat has an arm protruding from the connection seat and an (elastic) restriction section formed on the arm. A shift body is assembled in the connection seat. The shift body is formed with a ridge section and a push/press section. When the shift body is moved from a first position to a second position, the ridge section is permitted to directly pass through the restriction section into a locked state. After the push/press section pushes the restriction section, the main body is unlocked from the connection seat, whereby the assembly of the main body and the connection seat is controllable.

An isolation ground switch has a housing having a front housing portion and a back housing portion defining a housing cavity therebetween. A conductive switch plate is positioned in the housing cavity and rotatable between a closed position and an open position. A plurality of termination studs are mounted to the front housing portion, each termination stud having a conductive projection extending into the housing cavity. The conductive projection of each termination stud engages the switch plate when the switch plate rotates to the closed position, and when the switch plate rotates to the open position, the switch plate does not contact the termination studs and is conductively isolated

An isolation ground switch has a housing having a front housing portion and a back housing portion defining a housing cavity therebetween. A conductive switch plate is positioned in the housing cavity and rotatable between a closed position and an open position. A plurality of termination studs are mounted to the front housing portion, each termination stud having a conductive projection extending into the housing cavity. The conductive projection of each termination stud engages the switch plate when the switch plate rotates to the closed position, and when the switch plate rotates to the open position, the switch plate does not contact the termination studs and is conductively isolated