Allen-Bradley 100-A45N3 Three-Phase Contactor

Allen-Bradley 100-A45N3 is a three-pole contactor used to switch three-phase motors and other AC loads in control panels and industrial equipment. The main circuit is rated for up to 45 A and up to 600 V AC, enabling it to start and stop moderate-size motors in manufacturing lines, pumps, conveyors, and fans. The coil is an AC type designed for 110/120 V operation at 50/60 Hz, allowing direct control from typical building or machine control circuits. As part of the 100-A family, it is designed to be paired with an overload relay and auxiliary contacts to form a complete motor starter assembly, providing reliable energize/de-energize control with straightforward wiring. The 100-A contactors are commonly used in control schemes where 110/120 VAC control voltages are standard, and they are compatible with standard panel-mounting methods used for Allen-Bradley components. This model, 100-A45N3, delivers a proven combination of current handling, voltage tolerance, and compatibility with a wide range of industrial equipment, making it a common choice for engineers designing motor control circuits that require a dedicated three-phase switching device.