The LV848428 is a Schneider Electric MasterPact MTZ2 drawout circuit breaker — 4-pole, rated 1250 A at 40 °C, with an H2 performance class delivering 100 kA breaking capacity at 415 V AC. It's a Category B breaker per IEC 60947-2, meaning it's designed for full selectivity in downstream coordination, not just a standalone fault interrupter. The drawout chassis lets you rack the breaker out for maintenance or replacement without disturbing the power connections — that's the whole point of the form factor. With the chassis installed, the unit measures 403 mm deep, 556 mm wide, and 439 mm high; without the chassis, it's 300 mm deep and 493 mm wide.
Built to EN/IEC 60947-1, -2, and Annex H for air circuit breakers, plus IEC 61557-12 for performance measurement. Pollution degree 3, rated insulation voltage 1000 V AC, impulse withstand 12 kV.