Abstract: One embodiment describes an interlock for an electromechanical switching system, which includes a housing; a first camming lockout member disposed in the housing and that contacts an auxiliary operator of a first electromechanical switching device; a second camming lockout member disposed in the housing and that contacts an auxiliary operator of a second electromechanical switching device, which the first camming lockout members contacts the second camming lockout member when the first camming lockout member is moved to an actuated position by the first electromechanical switching device to prevent movement of the second camming lockout member to an actuated position.

Abstract: One embodiment describes a wye-delta starter, which includes a first single pole, single current carrying path switching device that selectively connects and disconnects a first winding of a motor in a wye configuration; a second single pole, single current carrying path switching device that selectively connects and disconnects the first winding in a delta configuration, in which the first switching device and the second switching device are coupled via a first interlock; a third single pole, single current carrying path switching device that selectively connects and disconnects a second winding and a third winding of the motor in the wye configuration; a fourth single pole, single current carrying path switching device that selectively connects and disconnects the second winding in the delta configuration, in which the third switching device and the fourth switching device are coupled via a second interlock; and a fifth single pole, single current carrying path switching device that selectively connects and

Abstract: Rotary switch interlock mechanisms and electrical switch assemblies with a rotary switch interlock mechanism are presented herein. An electrical distribution device with at least two electrical switches is disclosed. Each of the electrical switches has a switch actuator that is movable between engaged and disengaged positions. A rotary interlock member is rotatably mounted to the housing of the electrical distribution device adjacent the first and second electrical switches. The rotary interlock member is rotatable 180 degrees between a first orientation, whereat the rotary member allows the switch actuator of the second electrical switch into its engaged position while preventing the switch actuator of the first electrical switch from being moved into its engaged position, and a second orientation, whereat the rotary member allows the first switch actuator to be moved into its engaged position while preventing the second switch actuator from being moved into its engaged position.

Abstract: A switching device for a transfer switch has a pivotal body, a solenoid, a resilient pushing device and a main spring. The pivotal body has a pivotal axis, a first recess, a second recess and a connecting axis. The first and second recesses are defined adjacent to each other. The connecting axis is defined between the first and second recesses. The solenoid is connected to the pivotal body with a lever and has a driving shaft with a center line. The main spring has a connecting end being connected to the pivotal body at a point on the connecting axis. The lever has a center line. The connecting end of the main spring connected to the connecting axis is offset to the center line of the lever when the center line of the lever aligns with the center line of the driving shaft.

Abstract: A power system including a power transfer device that prevents a common load from at once being powered by a main and auxiliary power source, and eliminates any possibility of back feeding the main power source from the auxiliary power source. First and second circuit breakers are mounted side by side in reversely positioned relationship and have handles joined by a coupler, so that movement of the coupler in either direction opens one circuit breaker and closes the other one.

Abstract: An interlock arrangement for a pair of aligned switches, for preventing both switches from being on at the same time, includes a feature that prevents the switches from being inadvertently disengaged from mounting structure associated with an electrical panel to which the switches are mounted. The interlock arrangement includes an interlock base member that extends through aligned openings defined by the switch operating members. A pair of inner engagement members interact with the switch operating members so as to ensure that the switch operating members cannot both be in the ON position. An outer engagement member is secured to the interlock base member outwardly of each switch operating member. The interlock base member overlies and engages edges defined by the switches and the outer engagement members engage the switch operating members, to prevent inadvertent removal of the switches.

Abstract: A circuit breaker assembly including a first and second circuit breakers each having toggle switch assemblies movable between ON and OFF positions. The toggle switch assemblies have connectors coupled thereto for preventing both circuit breakers from being in the ON position at the same time.