The Siemens 3VA1110-6ED42-0AA0 is a SENTRON molded case circuit breaker rated for continuous current of 100 A at ambient temperatures up to 50 °C without derating — at 55 °C it still holds 98 A, and at 70 °C it delivers 91 A. The 4-pole configuration with a TM210 thermal-magnetic release makes this a line-protection breaker for main feeders or large sub-distribution in 3-phase + N systems. The interrupting ratings are the headline: 220 kA at 240 V, 154 kA at 415 V, and 121 kA at 440 V, dropping to 17 kA at 500 V and 690 V.
The 101.6 mm width (4 inches) is the standard 4-pole MCCB footprint for this SENTRON frame size — it occupies four 25.4 mm pole spaces on a DIN rail or panel-mount base. Depth of 70 mm leaves clearance for rear-mounted busbars or cable ladders behind the breaker.
Selectivity and coordination notes
The TM210 release is a fixed thermal and fixed magnetic type — no interchangeable trip units, so the 100 A rating is hard-set at the factory.