2000 Cutler-Hammer Ampgard Medium Voltage Motor Starter Control Panel. (2) units: Power supply (bottom and top): 500 hp, 4160 V, 60 Hz. Each slide out 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, non reversing, single speed applications. Overall dimensions: 3 ft. L x 2 ft. 11 in. W x 7 ft. 8 in. H.(ACN250).