Westinghouse Ampgard Motor Starter Control Panel. Ref. No's: AT-72960-1 and V202J4G. Power supply: 400 hp, 4160 V, 60 Hz. Westinghouse IQ-2000 Variable Frequency Inverter. Each Ampgard motor starter (controller) consists of one non load-break isolating switch, one or more Type SLS vacuum-break contactors, current-limiting fuses, a set of current transformers, and some form of overload protection. The controller is designed to start, stop and protect a three-phase medium-voltage motor or may also be used to switch transformer windings or other medium voltage loads. These controllers are configured for full-voltage applications. Westinghouse IQ-2000 Variable Frequency Inverter provides complete circuitry protection against abnormal operations such as overload, Inductive type loads, short-circuit, and AC Input Over-Voltage. Overall dimensions: 37 in. L x 37 in. W x 103 in. H.