That 100 A holds flat from 40 °C to 50 °C before the thermal-magnetic trip (TM240 release) starts its derating curve — at 65 °C it still carries 94 A, which means this breaker handles a warm panel without forced cooling. Breaking capacity is the headline: 220 kA at 240 V, 154 kA at 415 V, and still 17 kA at 690 V, so it clears high-fault scenarios downstream of a large transformer without needing a current-limiting upstream device.
Footprint is 76.2 mm wide, 130 mm tall, 70 mm deep — standard for a 3-pole 100 A frame in the 3VA platform.
