The Siemens SENTRON 3VA2010-6HN32-0CC0 is a 3-pole molded case circuit breaker (MCCB) rated for line protection, carrying a continuous current of 100 A and a breaking capacity of 242 kA at 240 VAC — that's the short-circuit current it can safely interrupt without welding contacts or cascading failure upstream.
Breaking capacity drops as voltage rises: 242 kA at 240 V, 187 kA at 415 V and 440 V, 121 kA at 500 V, and 4 kA at 690 V.
Above that it derates: 96.25 A at 55 °C, 92.5 A at 60 °C, 88.75 A at 65 °C, and 85 A at 70 °C. If your panel runs hot, size the load side accordingly.
