Square D LA11042 U 24V DC Coil For Contactor Assembly

The Square D LA11042 U is a shunt-trip accessory for LA-series circuit breakers that energizes a 24V control coil to trip the breaker remotely, enabling fast isolation during fault conditions. It is compatible with LA, LAF, LAL, LAP, LH, LHF, LHL, LHP, and Q4 frame types and is installed as an add-on module to corresponding Square D assemblies, carrying the suffix -1042 when mounted in the housing. Manufactured by Square D (Schneider Electric), this part supports remote protection schemes in industrial panels and motor-control centers where a control signal must trigger a trip. The LA11042 U designation identifies a 24V coil shunt-trip option within the LA family, providing compact remote-trip capability without altering the base breaker footprint. For proper installation and electrical code compliance, refer to the manufacturer’s wiring diagrams and installation notes bundled with the LA11042/U accessory and ensure compatibility with your specific LA-frame breaker model.