The LV848183 is a MasterPact MTZ2 08 H1 fixed circuit breaker rated 800 A at 40 °C, meaning it carries continuous load up to that current without tripping — the real-world sizing anchor for a main or feeder breaker in a 690 V AC distribution board. The H1 performance tier delivers 66 kA Ics across the full voltage range from 220/415 V up to 660/690 V AC, so the breaker clears faults up to that level and stays operational afterward — no need to replace after a short-circuit event within that rating. Category B selectivity means the breaker is designed to coordinate with downstream devices so only the faulted branch opens, keeping the rest of the bus live.
Deployment and integration
Fixed mounting on rails or a base plate with front and rear connection options on both upside and downside. IP30 protection means it's suited for indoor switchgear enclosures where tools or fingers are the main concern — not washdown environments. Neutral position on the right matters when laying out the busbar order in a 4-pole assembly.