Allen-Bradley 73A86 Relay Coil 120V AC Industrial General Purpose

The Allen-Bradley 73A86 relay coil is a Size 3, Series K operating magnetic coil for the Bulletin 700 family of motor-contactor starters. It is rated for 110/120 VAC operation at 50/60 Hz, enabling reliable energization of standard control circuits in industrial panels; the coil is designed for 2- to 3-pole configurations found in typical 700-series starters. Intended to energize the contactor’s magnetic core, the 73A86 closes the main contacts to power the connected load when the control circuit is activated, and it serves as a compatible coil for Series K, Size 3 coils across 700-series contactors. This part is commonly used in retrofit or new installations where Allen-Bradley 700-series starters are employed to control motors and other equipment, with the 120V control logic common in many industrial environments. Common industrial uses include motor-start control for conveyors, pumps, and fans via 700-series contactors in panel installations, offering a straightforward replacement option for designated 700-series coils.