The Schneider Electric LV847359 is an MX opening voltage release — a shunt trip coil — for MasterPact MTZ1, MTZ2, and MTZ3 fixed-mount circuit breakers. It operates on a 12 V DC supply with a holding power consumption of 4.5 W and a maximum response time of 60 ms on opening. The control type is Standard, meaning it provides basic remote tripping without integrated undervoltage or delayed functions. The threshold tripping voltage is 0.7 to 1.1 times the rated supply voltage (Un) on opening — so the coil will reliably trip when the control voltage drops to about 8.4 VDC or rises to 13.2 VDC.
Integration notes
This voltage release mounts inside the MasterPact MTZ fixed breaker chassis. The 12 VDC supply must be stable within the 0.7 to 1.1 Un threshold range for reliable tripping. Holding power of 4.5 W is continuous — the coil remains energized in the closed position and de-energizes to trip. Response time of 60 ms is the maximum from energization to contact opening — factor this into safety circuit timing calculations where the shunt trip is part of a coordinated protection scheme.