The LV839200 is a Schneider Electric MasterPact MTZ2 drawout circuit breaker, 3-pole, rated 800 A at 104 °F (40 °C). It carries an L1F breaking capacity code — 200 kA Icu at 254 VAC, 200 kA Icu at 508 VAC, and 130 kA Icu at 635 VAC, all per ANSI C37.50. The ArcBlok technology inside the arc chamber speeds extinction and reduces let-through energy.
Drawout mount on base plate rails. Overall dimensions: 16.8 in deep, 17.5 in wide, 17.3 in tall. Connection pitch is 4.5 in. That footprint matches the standard MTZ2 drawout cradle — verify the existing cell dimensions before committing, especially the depth clearance for the arc chamber and rear terminals.
Protection and performance specs
Integral instantaneous protection set at 49.5 to 55.5 kA. Short-time withstand current (Icw) is 22 kA for 0.5 s per ANSI C37.50 — that's the current the breaker can carry without damage during a delayed trip coordination. Maximum breaking time is 9 ms; closing response time is 70 ms. Electrical durability is 1000 cycles, mechanical durability 10,000 cycles under ANSI C37.50. That mechanical count is typical for a drawout breaker — it's designed for infrequent switching, not daily motor starts.