Schneider Electric LV847385 MasterPact MTZ MN Undervoltage Release 380-480V Air Circuit Breaker Accessory

The Schneider Electric LV847385 is an MN instantaneous undervoltage release for fixed MasterPact MTZ1, MTZ2, and MTZ3 air circuit breakers, supplied for 380-480 V AC 50/60 Hz control circuits only. It opens the breaker automatically once the supervised voltage falls to 0.35-0.7 Un, then re-closes the circuit once voltage recovers to 0.85 Un.

Technical Specifications

Selection Notes

The LV847385 is the AC-only, 380-480 V member of the MN family and has no DC rating, unlike the 100-130 V and 200-250 V versions that accept either AC or DC supply; confirm the control source is AC before specifying it. It fits fixed MTZ1, MTZ2, and MTZ3 breakers only. Because the trip threshold is 0.35-0.7 Un, it reacts well before a complete loss of control voltage, giving the downstream load an early, controlled disconnect rather than an uncontrolled one. Holding power consumption is specified in VA rather than W for this AC-only variant, reflecting the reactive component of the coil's steady-state draw.