It carries a 75.6 kA interrupting capacity at 240 V, 52.5 kA at 415 V, and 32 kA at 440 V — numbers that tell you it handles high-fault utility feeds or transformer secondaries without cascading upstream breakers. Rated insulation voltage is 800 V, and the frame holds the full 100 A from 40 °C up through 50 °C without derating; at 55 °C it's 96 A, at 60 °C it's 94 A, and at 70 °C it's 90 A. That flat curve up to 50 °C buys you headroom in a warm enclosure — a packed panel that hits 50 °C still lets you run the full 100 A through this breaker.
The 3VA1010-3ED32-0KC0 measures 70 mm deep by 76.2 mm wide by 130 mm tall, which is the standard 3-pole SENTRON 3VA1 frame width. The shunt trip (STL) and two auxiliary switches (HQ) are integrated; the auxiliary release order code is 3VA9688-0BL33 if you need a spare or a documented part number for the BOM.