Schneider Electric 29387 Undervoltage Release Coil

Schneider Electric's Merlin Gerin 29387 MN undervoltage release coil is a direct OEM replacement designed for Compact NS molded‑case circuit breakers rated from 100 A to 630 A, ensuring a seamless retrofit when the undervoltage release fails. The coil is rated for 220–277 VAC control voltage at 50/60 Hz and draws 30 VA, providing an undervoltage release that triggers automatic tripping when the voltage drops or outages occur. As an internal mounting accessory for Compact NS breakers, it integrates as a field-installable or OEM replacement component under part number 29387, aligning with Schneider Electric's MN undervoltage release specification. In industrial and commercial power distribution, motor control centers, switchboards, and electrical panels, maintenance electricians and system integrators rely on this coil to restore dependable tripping and protection functions after failure or preventive maintenance. Part number 29387 is the MN undervoltage release coil used with Compact NS breakers within Schneider Electric and Merlin Gerin product families.