Schneider Electric LV429408 ComPacT NSX100-630 MN Undervoltage Release 380-415 V AC Circuit Breaker Accessory

The Schneider Electric LV429408 is an MN undervoltage release for ComPacT NSX100-630, PowerPact Multistandard and EasyPact CVS moulded case circuit breakers, rated 380-415 V AC 50/60 Hz (also 440-480 V AC 60 Hz). It opens the breaker automatically when the control voltage drops below 35% of its rated value Un, with a 50 ms response time and screwless spring terminal connections.

Technical Specifications

Selection Notes

LV429408 fits ComPacT NSX, EasyPact CVS and PowerPact Multistandard breakers on 380-415 V AC 50/60 Hz control circuits (the same reference also covers 440-480 V AC 60 Hz). It is the fail-safe counterpart to an MX shunt trip: the breaker trips automatically if its control supply is lost or sags below 35% Un, so it suits circuits where loss of control power must open the breaker rather than leave it closed. For 220/240 V AC control supplies, choose the lower-voltage undervoltage release instead. Each breaker chassis accepts either one MX or one MN auxiliary, never both.