The LV846320 is a MasterPact MTZ2 25HH switch-disconnector rated for 2500 A continuous at 440 V AC, with a breaking capacity of 100 kA Icu at 440 V AC. The drawout chassis lets you rack the unit out for maintenance or swap without killing the bus; keeps the line moving during a breaker swap. It carries an AC-23A utilization category — that is the heavy-duty motor-switching curve, not just resistive load. 5000 electrical cycles at 440 V and 15000 mechanical cycles with periodic PM. For a main disconnect that sees maybe a few operations a day, that cycle life is deterministic, every cycle.
Drawout mounting on a chassis. The footprint is 441 mm wide × 439 mm high × 403 mm deep — plan for a 500 mm wide cell in the switchgear lineup to allow racking clearance. Connection pitch is 115 mm; the bus bars land on that spacing. IP30 means it is enclosed in the cubicle — no washdown exposure, but fine for a clean indoor MV switchboard.