The Siemens SENTRON 3VA2110-6HL32-0BL0 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 up to that ceiling. It is designed for line protection in distribution panels and switchgear, with a breaking capacity that starts at 242 kA at 240 V and holds at 187 kA through 440 V, then steps down to 121 kA at 500 V and 3.7 kA at 690 V. That 242 kA at 240 V figure is the headline: it handles very high available fault currents typical at the service entrance or main feeder position. The auxiliary switch set gives remote status of the main contacts, the trip alarm signals a fault trip, and the electrical alarm switch provides a separate signal for the UVR state.
That simplifies panel design: you don't need to oversize the breaker for a hot enclosure. The adjustable thermal-magnetic trip (minimum 150 A, maximum 1 200 A) covers a wide range of cable and load protection settings. The undervoltage release (UVR) is factory-installed; verify control voltage compatibility with your panel's control transformer before specifying.