It's the kind of breaker you spec into a distribution panel when you need a hard, reliable interrupt at the feeder — not a branch device. Interrupting capacity is the headline: 440 kA at 240 V, 330 kA at 415 V and 440 V, 220 kA at 500 V, and 52.5 kA at 690 V. That means it can sit upstream of a high-fault transformer or a big motor bank without worrying about the arc flash hitting the breaker's ceiling.
Footprint is 181 mm high, 105 mm wide, 86 mm deep — that's a 4.13-inch wide body that fits standard MCCB mounting patterns. No special adapter plate needed for most DIN-rail or panel-mount enclosures. Power loss is 7.7 W max.
Ground-fault and monitoring
That's a practical feature for detecting leakage on a feeder without a separate GF relay — saves a DIN slot and some wiring. It's a straight line-protection breaker — no trip indicator either, so if you need remote status, plan on an auxiliary contact block.