Schneider Electric 3104140042U Circuit Breaker

Schneider Electric 3104140042U is a 120 VAC contactor coil accessory for Square D SA/SB/SC/SM contactors, enabling automatic control of AC loads through the main contacts. It is designed for Series A (SA) contactors and is compatible with SB, SC, and SM styles across all pole configurations, providing a single coil option for multiple frame sizes. The coil is rated for 120 V AC operation at 50/60 Hz and is specified for use in environments up to 40°C ambient, making it suitable for standard panel mounting in typical industrial control panels. This replacement coil supports NEMA coil compatibility with contactors sized 00, 0, 1, and 1-P, and is intended to energize the associated contactor coil when control voltage is applied, rather than acting as a standalone circuit breaker; it is categorized under contactor accessories as a coil kit. Brand alignment is Schneider Electric, marketed as Square D coil accessory with the part number 3104140042U, designed to integrate with existing Square D contactor assemblies to extend or replace coil functionality.