The Schneider LV847320 is an MX opening voltage release with diagnostics and communication, designed for MasterPact MTZ1, MTZ2, and MTZ3 fixed-mount circuit breakers. It operates as a shunt trip — an opening coil that trips the breaker on a control signal — drawing 4.5 W holding power from a 12 VDC supply. Maximum response time is 60 ms across all three MTZ frame sizes.
The 12 VDC supply voltage (Un) is the nominal control voltage; the coil operates reliably across a threshold tripping voltage range of 0.7 to 1.1 Un on opening, so it will trip anywhere from about 8.4 V to 13.2 V. The 60 ms maximum response time is consistent across all three MTZ frame sizes — critical for coordination studies where the trip-coil opening time must be factored into the total clearing time. The communicating control type means this variant includes diagnostic feedback (signalling functions for error, ready to close/open, electrical push-button activated, coil powered) rather than being a bare shunt trip.