The Siemens SENTRON 3VA2010-5HL36-0BA0 is a 3-pole molded case circuit breaker (MCCB) rated for a continuous current of 100 A across the full ambient temperature range from 40 °C to 70 °C — no derating needed up to that ceiling.
The interrupting rating is 187 kA at 240 V, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 3 kA at 690 V — these are the maximum fault currents the breaker can safely clear at each voltage level, which decides whether it coordinates with upstream gear or requires a current-limiting upstream device.
