The Siemens 3VA1110-5EF32-0KC0 is a SENTRON molded case circuit breaker (MCCB) rated for 100 A at 40 °C, with a 187 kA breaking capacity at 240 V — that's the spec that tells you it'll handle high-fault bolted faults on a 240 V line without welding its contacts shut. It's a 3-pole unit built for line protection, meaning it guards the feeder or main distribution, not a specific motor branch. The 100 A rating holds steady through 50 °C (still 100 A), then starts a gentle derate: 98 A at 55 °C, 96 A at 60 °C, 94 A at 65 °C, and 91 A at 70 °C.
This MCCB's interrupting capacity drops as the voltage climbs: 187 kA at 240 V, 121 kA at 415 V, 75.6 kA at 440 V, and 17 kA at both 500 V and 690 V.
The 3VA1110-5EF32-0KC0 measures 130 mm high, 76.2 mm wide, and 70 mm deep — a standard 3-pole MCCB footprint that drops into a SENTRON distribution panel or a DIN-rail adapter without surprises.
What's inside: auxiliary and release options
The shunt trip lets you drop the breaker from a PLC or E-stop circuit, which is handy for emergency-off schemes.