Honeywell R4220A1003 Contactor

The Honeywell R4220A1003 Contactor is a 50 A, 3-pole device whose 120 V control circuit is rated for 50/60 Hz operation, making it suitable for standard building automation and HVAC control environments. Its 3PST configuration means three power contacts operate together from a single 120 V AC coil, enabling simultaneous switching of all three phases in a three-phase load, with the part number clearly identifying this Honeywell model. Designed to switch motors, compressors, fans, and other HVAC or industrial equipment, it is typically mounted in control panels or switchgear to provide reliable on/off control of high-current circuits. With a 50 A rating and three independent poles, the R4220A1003 supports robust operation for moderate to heavy loads while integrating into conventional control systems that rely on 50/60 Hz coil energization.