Schneider Electric MA11021 U 120/240V Contactor

Schneider Electric MA11021 is a 120-240 VAC shunt-trip accessory for MA and MH frame circuit breakers, designed to provide remote tripping when the control coil is energized. In industrial control panels and safety interlock installations, this device allows a 120–240 V AC control signal to trip the breaker, delivering a fast, automatic disconnect in emergencies or when an external interlock requires a controlled shutdown. It integrates with MA and MH series breakers as part of Schneider Electric's Square D line of control accessories and is specifically configured for 120/240 VAC control voltages. Schneider Electric discontinued the MA11021 on November 1, 2020, making it a legacy component for existing installations and a reference point when selecting current-compatible remote-trip options within the MA/MH family. For projects replacing or refurbishing older panels, consult Schneider Electric's catalog for contemporary shunt-trip accessories that match MA/MH frame compatibility and control-voltage requirements.