Allen-Bradley 100-A12ND3 Industrial Control Module

Allen-Bradley 100-A12ND3 is a three-pole, non-reversing AC magnetic contactor from the Bulletin 100 family, designed to reliably switch 3‑phase motors and other AC loads in industrial automation. It provides a 12 A continuous load current rating and supports mains up to 600 V in the power circuit, while the coil operates at 110–120 VAC at 50/60 Hz. The ND3 designation indicates a non-reversing configuration and the unit ships with one normally open auxiliary contact for basic control logic or interlocking in a starter assembly. This contactor is typically used with Bulletin 100 motor control systems to start and stop motors, pumps, fans, and other loads from local or remote control circuits. Horsepower ratings scale with supply voltage, roughly 3 HP at 200–230 V, 7.5 HP at 460 V, and up to about 10 HP at 575 V, depending on the motor and wiring arrangement.