The Siemens SENTRON 3VA1010-2ED42-0AA0 is a 4-pole molded case circuit breaker (MCCB) rated for line protection, carrying a continuous current of 100 A at 40 °C and a maximum interrupting capacity of 52.5 kA at 240 V.
Interrupting capacity and selectivity headroom
At 415 V the interrupting rating is 32 kA, dropping to 13.6 kA at 440 V and 7.5 kA at both 500 V and 690 V.
The breaker holds 100 A continuously from 40 °C up to 50 °C, then derates to 98 A at 55 °C, 96 A at 60 °C, 94 A at 65 °C, and 91 A at 70 °C. In a 600 mm wide enclosure with four breakers side-by-side, expect the internal ambient to rise 10–15 °C above the room temperature — the 91 A at 70 °C figure is the one to size against for a tightly packed panel. The 70 mm depth (2.76 in) and 101.6 mm width (4 in) fit standard Siemens SENTRON mounting bases; the 130 mm height (5.12 in) leaves clearance for busbar connections above and below.
Compliance and environmental limits
Maximum power loss is 25 W.