The LV848227 is a MasterPact MTZ2 drawout circuit breaker rated 1000 A at 40 °C with an H1 performance class delivering 66 kA Ics across 220–690 V AC. Selectivity category B means the breaker has intentional short-time delay capability, so it coordinates selectively with downstream feeders — critical for a main or tie breaker in a switchboard where you want only the faulted branch to open. The drawout mounting allows the breaker to be racked out for maintenance or replacement without disturbing the primary connections — standard for large switchgear where downtime on the bus is not acceptable. The chassis adds 103 mm to the depth (403 mm with chassis vs 300 mm without) and 63 mm to the width (556 mm vs 493 mm), so verify the cubicle depth before specifying. Mounting support options include rails or a base plate.
Altitude rating is 0–2000 m without derating, 2000–5000 m with derating. IP30 protection means the breaker is protected against tools and wires greater than 2.5 mm — standard for enclosed switchgear; the enclosure itself provides the higher IP rating. Power dissipation is 150 W at rated current — account for this in the switchgear ventilation calculation. The control type is push-button and ships without a control unit — the Micrologic trip unit is ordered separately as a system component. Upside and downside connections are both available in front or rear configurations, with a connection pitch of 115 mm. Sensor rating options are 400 A, 630 A, 800 A, and 1000 A — the breaker frame accepts any of these, so the same LV848227 can be down-rated with a lower sensor if the load changes.