Allen-Bradley 150-C37NBR Smart Motor Controller

Allen-Bradley 150-C37NBR SMC-3 Smart Motor Controller is an open-type, 3-wire soft starter for three-phase motors, rated at 37 A and designed for 480 V three‑phase service with 50/60 Hz power. It operates from a 24 V AC/DC control circuit, enabling a controlled ramp during motor start-up and reducing electrical stress on the circuit. This model is part of the SMC-3 family of Smart Motor Controllers from Allen-Bradley (Rockwell Automation) and is identified by the 150-C37NBR catalog number, indicating its 37 A current rating and 24 V control compatibility for 480 V three-phase systems. It is intended for industrial applications requiring reliable soft-start functionality for 3-phase motors in control-panel environments that utilize standard 24 V control signals.