What this MCCB carries and where it fits
The Siemens 3VA1010-3ED42-0BA0 is a SENTRON molded case circuit breaker (MCCB) rated for line protection, with a continuous current of 100 A at 40 °C and a 4-pole configuration. Breaking capacity hits 75.6 kA at 240 V, 52.5 kA at 415 V, and 32 kA at 440 V — enough to handle high-fault utility feeds or large transformer secondaries without cascading upstream. The TM210 thermal-magnetic overcurrent release handles the overload and short-circuit protection curve; an integrated undervoltage release (UVR) is built in, so the breaker drops out on loss of control voltage without an external shunt trip module.
Current derating and thermal budget
Rated 100 A from 40 °C through 50 °C ambient, then derates to 98 A at 55 °C, 96 A at 60 °C, 94 A at 65 °C, and 91 A at 70 °C — useful when the MCCB sits in a crowded panel or near heat sources. Maximum power loss is 27.5 W, which factors into enclosure ventilation calculations for a multi-breaker lineup.
Panel fit and mounting
Width is 101.6 mm (4 in), depth 70 mm (2.76 in), height 130 mm (5.12 in) — standard SENTRON 3VA footprint for a 4-pole frame. Rated insulation voltage is 800 V, so it's suitable for 480/277 V and 600 V panels with headroom to spare.