The Siemens 3VA1110-6EF32-0AA0 is a 3-pole SENTRON molded case circuit breaker rated for 100 A continuous at 40 °C, with a TM240 thermal-magnetic overcurrent release designed for line protection. Its breaking capacity reaches 220 kA at 240 V AC, 154 kA at 415 V, and 121 kA at 440 V — sufficient for high-fault utility feeds and transformer secondaries.
The breaker holds its full 100 A rating from 40 °C through 50 °C, then derates linearly to 91 A at 70 °C. Front protection is IP40; the enclosure must provide the rest of the ingress rating.
