Siemens SENTRON 3VA1110-3EF42-0AA0 — 100 A MCCB for Line Protection
The Siemens 3VA1110-3EF42-0AA0 is a 4-pole molded case circuit breaker from the SENTRON 3VA series, rated 100 A at 40 °C and designed for line protection in distribution panels. Breaking capacity is 75.6 kA at 240 V, 52.5 kA at 415 V, and 32 kA at 440 V, so it handles high-fault-current scenarios on 480Y/277 V or 400 V industrial services without cascading upstream.
Above that, it derates linearly: 98 A at 55 °C, 96 A at 60 °C, 94 A at 65 °C, and 91 A at 70 °C.
The breaker measures 130 mm high, 101.6 mm wide, and 70 mm deep — a 4-pole footprint that fits standard SENTRON 3VA mounting bases. No undervoltage release or communication module is fitted on this variant, so it's a straight thermal-magnetic unit with no auxiliary wiring.
Selectivity and Coordination Notes
For selectivity studies, the TM240 release gives a fixed thermal pickup at 100 A and a magnetic trip adjustable from 5× to 12× In (500–1200 A).