ABB A40S1-84C Contactor

ABB A40S1-84C Contactor is a three-pole AC contactor used as a motor starter for three-phase loads in control panels. The part carries alternate catalog references A40-30-10 and TA42 DU contactor 3PH STR N1 120V MOTOR STARTER, signaling cross-compatibility within ABB’s product families and a 120V control circuit option. As a member of ABB’s A40 series, the device is intended for switching three-phase motors under standard electrical control conditions, with a coil drive arrangement designed to operate from a 120V control signal. The model code A40S1-84C identifies this specific configuration within the A40S1 lineup. This contactor provides the essential function of energizing and de-energizing a three-phase motor under user control in panel-mounted starter assemblies, making it suitable for industrial electrical control where reliable motor switching is required. Cross-referenced designations help technicians locate compatible spare parts or replacement units within ABB's extensive catalog.