The LV848193 is a MasterPact MTZ2 4P fixed circuit breaker rated 4000 A at 40 °C, with an H1 performance class delivering 66 kA Ics across the full voltage range up to 690 V AC. Selectivity category B means it coordinates with downstream breakers for selective tripping — the faulted branch clears while upstream stays closed. Rated insulation voltage is 1000 V AC, impulse withstand 12 kV. The 66 kA Icw for 3 s means it can carry a short-circuit current for that duration without damage — critical for downstream coordination studies.
Fixed mounting on rails or base plate. Dimensions: 537 mm wide × 352 mm high × 300 mm deep. Connection pitch 150 mm. Upside and downside connections both accept front or rear termination — panel layout flexibility for top-feed or bottom-feed bus runs. Neutral position on the right. IP30 enclosure protection; pollution degree 3 per IEC 60947-1.
Durability and environmental range
Mechanical durability 20,000 cycles with periodic preventive maintenance. Electrical durability: 6000 cycles AC-3 at 440/690 V, 5000 cycles at 440 V per EN/IEC 60947-2. Maximum breaking time 25 ms; closing response time 70 ms. Power dissipation 650 W at rated current — factor into enclosure thermal calculations. Altitude 0–2000 m without derating, 2000–5000 m with derating.