Allen-Bradley 100-B300N3 Three-Phase Contactor

Allen-Bradley 100-B300N3 is a three-pole IEC motor-contactor designed to start and stop three-phase motors in industrial equipment. It features a 120 V AC control coil (60 Hz) and is rated to switch load voltages up to 690 V AC, with a continuous current rating of 400 A and a nominal 300 HP capacity. This model is commonly used for motor control in applications such as conveyors, pumps, and machine tools, where reliable switching of large three-phase loads is required, and it accepts standard 100-B series accessories for control circuits and panel installations. The 100-B family is widely deployed in industrial control panels and motor control centers for systems operating at 600–690 VAC with a 120 VAC, 60 Hz control supply.