The LV839250 is a communicating closing voltage release (XF com) for Schneider Electric MasterPact MTZ drawout circuit breakers. It operates on a 200-250 V AC 50/60 Hz or 200-250 V DC control circuit, with a threshold tripping voltage of 0.85 to 1.1 Un. Supply holding power is 4.5 VA / 4.5 W.
This part is obsolete per the manufacturer. No direct successor is listed in the evidence.
The communicating control type means this closing coil integrates with the MasterPact MTZ's communication bus — it reports status (error, ready to close, coil powered, push-button activated) back to the controller, not just a dry contact. The drawout mounting mode confirms it's designed for the MTZ drawout cradle, not the fixed version. Response time varies by frame: 55 ms +/- 10% for MTZ1, 70 ms for MTZ2, 80 ms for MTZ3 — factor that into your trip-coordination timing budget.
Deployment Context
Installs into the MasterPact MTZ drawout chassis — the drawout mechanism allows the breaker to be racked out for maintenance without disturbing control wiring. The closing coil is wired to the control circuit (200-250 V AC/DC) and communicates via the breaker's internal bus. Verify the control voltage matches your panel supply before commissioning.