Bradley 100-C55D10 Industrial Control Relay

Bradley 100-C55D10 is a three-pole industrial contactor rated for 55 A, designed to switch motor loads with a 110–120 VAC control coil. It features three main power poles with screw-terminal connections and a side-mounted auxiliary contact (1 NO) for control-circuit signaling. This IEC-style 100-C device can handle up to 20 HP at 230 VAC and 40 HP at 460 VAC, making it suitable for motors, pumps, fans, and other inductive loads in panels. The coil (Us) is specified at about 93.5–121 V with operation around 50 Hz, accommodating common 110–120 VAC supplies and tolerances. The unit supports flexible mounting options, including base or DIN-rail mounting, and accepts standard 100-C accessories for wiring and signaling needs. In typical control cabinet applications, the 100-C55D10 is used to start and stop moderate-load motors while the single side-mounted N.O. auxiliary contact can provide feedback or interlocking to the control system. With its compact footprint and rugged construction, this contactor provides switching in commercial and light-industrial environments where space is at a premium.