The Siemens SENTRON 3VA1110-5EF32-0AE0 is a 3-pole molded case circuit breaker (MCCB) rated for line protection, carrying a continuous current of 100 A through a TM240 thermal-magnetic overcurrent release. What sets this MCCB apart is its interrupting capacity: 187 kA at 240 V, 121 kA at 415 V, 75.6 kA at 440 V, and 17 kA at 690 V — figures that give a panel designer substantial headroom for high-fault-current installations without cascading upstream. The TM240 release is fixed, not adjustable, so the trip curve is set at the factory; the breaker does not carry a voltage trigger, undervoltage release, ground-fault monitoring, or communication module — it is a straightforward thermal-magnetic device for standard distribution.
Thermal derating and panel integration
The breaker holds its full 100 A rating from 40 °C through 50 °C, then derates to 96 A at 55 °C, 94 A at 60 °C, 92 A at 65 °C, and 90 A at 70 °C — a gentle slope that keeps most standard enclosures within the full-rating band. Dimensions are 130 mm high, 76.2 mm wide, and 70 mm deep, with an IP40 rating on the front face — splash-protected on the operator side but not sealed for washdown environments. The auxiliary contact configuration is 4 HQ (high-auxiliary) switches, giving remote status indication without an add-on module. Operating temperature range is -25 °C to 70 °C, with storage from -40 °C to 80 °C — the storage ceiling is the handling limit, not the running limit.