Abstract: A medium voltage controller for electrical equipment, having cast fuse holders, a disconnect switch, a switch illuminator, low power current transformers, and an optical temperature measuring system. The fuse holder includes a cast housing with smooth rounded surfaces that reduce corona. The disconnect switch has cast components that provide terminal points, mounting surfaces, and contact surfaces. The switch illuminator provides illumination of the disconnect switch internals. The contactor assembly is mounted in a truck and moves on a rail system that includes a pull-down handle with rails. The truck rolls out of the cabinet on the extended rails for easy removal from the cabinet. The truck, and contactor assembly, is racked in by pushing the truck into the cabinet and then raising the handle, which forces the draw-out fingers to engage the contact stabs.

Abstract: A medium voltage controller for electrical equipment, having cast fuse holders, a disconnect switch, a switch illuminator, low power current transformers, and an optical temperature measuring system. The fuse holder includes a cast housing with smooth rounded surfaces that reduce corona. The disconnect switch has cast components that provide terminal points, mounting surfaces, and contact surfaces. The switch illuminator provides illumination of the disconnect switch internals. The contactor assembly is mounted in a truck and moves on a rail system that includes a pull-down handle with rails. The truck rolls out of the cabinet on the extended rails for easy removal from the cabinet. The truck, and contactor assembly, is racked in by pushing the truck into the cabinet and then raising the handle, which forces the draw-out fingers to engage the contact stabs.

Abstract: A medium voltage controller for electrical equipment, such as motors, transformers, reactors, and capacitors, having an arc resistant cabinet, swaged internal electrical connectors, a one-piece self-aligning withdrawable finger cluster, a pull-out instrument compartment, a load discharge device, cast fuse holders, disconnect switch, a switch illuminator, low power current transformers, and an optical temperature measuring system. Internal electrical connections between controller components are made with connectors and cables. The cable conductors are swaged or compression welded in the connector barrels, forming a cold-welded electrical and mechanical junction.

Abstract: An interlock assembly is provided for a fusible switch which has a fuse in series with a switch and an operating mechanism for controlling the operation of the switch. The interlock assembly is mechanically coupled to the operating mechanism and includes an indicator member disposed adjacent to the fuse for indicating the status of the fuse and an actuator member mechanically coupled to the operating mechanism for actuating the operating mechanism to open the switch when the fuse is BLOWN. A toggle member is coupled to the indicator member and to the actuator member for mechanically communicating the status of the fuse to the actuator member from the indicator member wherein the toggle member is in one position when the fuse is CONDUCTIVE and the toggle member is in another position when the fuse is BLOWN.