It operates on a 24 V AC 50/60 Hz or 24-30 V DC control circuit, drawing 4.5 VA / 4.5 W holding power once energized. The tripping threshold is 0.35 to 0.7 times the nominal control voltage (Un) on opening, and it allows closing only above 0.85 Un — meaning the breaker stays latched closed only while the control voltage is healthy, and drops out well before a brownout reaches equipment-damage levels.
If you need a drop-in for an existing MTZ drawout installation, the LV839260 is the exact part — there is no later MN release variant that supersedes it in the Schneider catalog.
Fit and integration notes
This is a drawout-mounted voltage release — it plugs into the MasterPact MTZ1, MTZ2, or MTZ3 breaker chassis without hardwiring the release body itself. The drawout cradle carries the control wiring; the release slides in as a field-replaceable module. Response time is frame-dependent: 40 ms ± 5 % on the MTZ1, 90 ms ± 5 % on the MTZ2 and MTZ3. That difference matters for coordination studies — the larger frames have a longer mechanical delay before the undervoltage condition propagates to the trip mechanism. The control type is Communicating Standard, meaning it interfaces with the breaker's communication bus for status feedback (the error coil powered / MN open signaling function). It is not a standalone shunt trip — it reports its state digitally.