The LV846187 is a fixed-mount MasterPact MTZ2 air circuit breaker from Schneider Electric's MasterPacT range, rated 4000 A at 40 °C with an H2V performance class delivering 100 kA interrupting capacity at 415 V AC. It's a 4-pole unit without an integral control unit, intended for power distribution protection in Category B selective coordination schemes.
The H2V rating means 100 kA Icu at 415 V AC and 100 kA Ics at 440 V AC — the service breaking capacity equals the ultimate, so the breaker clears a fault and is immediately ready to reclose without derating. Short-time withstand (Icw) is 100 kA for 1 s, which supports full selectivity with downstream breakers in a distribution panel.
Fixed-mount chassis with 537 mm width, 352 mm height, and 300 mm depth. Connection pitch is 115 mm; both front and rear connections are available on the upside and downside. Mounts on rails or a base plate.