The LV839162 is a Schneider Electric Masterpact MTZ2 30 HB automatic switch disconnector rated for 3000 A at 40 °C, 3-pole, drawout chassis mount. This is the high-current distribution breaker for a 480 V or 600 V main — the 200 kA Icu at 240 V AC and 100 kA Icu at 600 V AC per UL 489 tell you it handles fault currents up to those levels without upstream coordination failure. The drawout cradle means the breaker slides out for maintenance or swap without disturbing the bus connections, which is the standard for switchboard mains and large feeder positions.
The 200 kA Icu at 240 V AC, 150 kA at 480 V AC, and 100 kA at 600 V AC (all 50/60 Hz, UL 489) define the maximum fault current this breaker can safely interrupt. For a 3000 A main on a 480 V service with a transformer capable of 150 kA symmetrical fault current, this breaker holds — no need for a current-limiting fuse upstream. The integral instant protection at 150 kA sets the magnetic trip threshold; verify coordination with downstream feeders per the selectivity tables in the MTZ2 documentation.
Drawout mounting on a chassis with a connection pitch of 4.5 in (115 mm). Overall dimensions: 17.5 in wide × 17.3 in tall × 16.8 in deep (444.3 × 438.8 × 426.8 mm). The drawout cradle requires matching cutout and bus-stab alignment in the switchboard — verify the existing cradle model (MTZ2 drawout) accepts this 3P 3000 A frame before ordering.