Allen-Bradley 100-A38ND3 Three-Phase Contactor

The Allen-Bradley 100-A38ND3 is a three-phase contactor with three poles and a 38 A load rating, paired with a 110–120 V AC control coil. As part of the 100-A family, this device is designed to start and stop 3‑phase motors in industrial automation by energizing the control coil to close the main contacts and de-energizing to open them. With a 3-pole configuration, it handles the three power lines feeding the motor, making it suitable for compact motor-start applications in equipment such as pumps, fans, conveyors, and compressors. The 110–120 V AC coil allows control from standard low-voltage circuits commonly used in plant control panels, enabling straightforward integration with relays and switchgear in typical motor-control schemes. This model's 38 A rating helps determine compatibility with the motor's full-load current and short-term inrush, guiding proper sizing within a starter assembly. For installation and integration, verify alignment with existing control circuitry, follow applicable electrical codes, and pair with appropriate protective devices in the control circuit to ensure safe operation.