The LA11133 is an undervoltage release accessory for Schneider Electric PowerPacT LA, LH, and Q4 circuit breakers. It trips the breaker when the control voltage drops below its dropout threshold, providing undervoltage protection for downstream loads.
Schneider Electric lists the LA11133 as obsolete. No official successor order code is provided in the lifecycle record.
This is a trip unit accessory — it mounts inside the PowerPacT LA/LH/Q4 breaker housing, not on a DIN rail. The 12 VDC coil is powered from a separate control circuit; verify the control transformer or DC supply is rated for the coil inrush before commissioning.