The Siemens SENTRON 3VA2110-5HN36-0JH0 is a 3-pole molded case circuit breaker (MCCB) rated for 100 A continuous current across the full ambient range from 40 °C to 70 °C — no derating needed in a warm panel. The interrupting ratings are substantial: 187 kA at 240 V, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 3.7 kA at 690 V.
The 3VA2110-5HN36-0JH0 measures 105 mm wide by 181 mm tall by 86 mm deep — a standard 4.13 in × 7.13 in × 3.39 in footprint that fits common MCCB panel cutouts. That alarm switch gives a positive signal when the breaker trips on fault, which is useful for remote annunciation or PLC input. The undervoltage release is not fitted, so if you need UVR protection you'll order a different variant or add it separately.