The LV846204 is a fixed-mount MasterPact MTZ2 air circuit breaker from the MasterPacT range, rated 2000 A at 40 °C (In) with a 4-pole configuration (4P). Its H2V performance class delivers 100 kA Ics at 440 V AC — the service breaking capacity that governs real fault clearing without replacement. Category B selectivity means it coordinates downstream breakers to isolate only the faulted branch, keeping the rest of the distribution live. The 100 kA Icw for 1 second confirms it withstands a delayed trip coordination window, essential for selective schemes in industrial switchgear. The 2000 A frame is sized for main incoming feeders or large bus risers in power distribution. Fixed mounting on rails or base plate means it bolts into a dedicated cubicle — not a draw-out cradle — so panel layout and bus connections are permanent. Front and rear connection options give flexibility for cable or busbar entry.
The IP30 enclosure protects against tools and wires >2.5 mm but is not sealed against water — install in a dry cubicle or add an enclosure for washdown areas.
Environmental and durability ratings
Altitude derating applies above 2000 m. Mechanical durability is 15,000 cycles with periodic preventive maintenance; electrical durability is 8000 cycles at In under AC-23A. Maximum breaking time is 25 ms, closing response 70 ms. Power dissipation at rated current is 250 W — factor into cubicle ventilation calculations.