The Siemens SENTRON 3VA1010-4ED36-0KH0 is a 3-pole molded case circuit breaker (MCCB) rated for line protection, carrying 100 A continuous current at 40 °C and a breaking capacity of 121 kA at 240 V. That 121 kA rating means it can safely interrupt a fault current up to that level without cascading upstream — critical for high-fault panels near large transformers or motor banks. At 415 V it still holds 75.6 kA, and at 690 V it drops to 11.9 kA, so the voltage-dependent curve governs where you place it in the distribution.
Thermal derating and mechanical endurance
The 100 A rating holds flat from 40 °C to 50 °C, then steps down: 96 A at 55 °C, 94 A at 60 °C, 92 A at 65 °C, and 90 A at 70 °C. If the panel ambient runs above 50 °C, you lose 4–10 A — plan the load accordingly. Mechanical endurance is 15,000 operations, which for a line-protection breaker in a fixed-distribution panel is well into the service life of the enclosure. The TM210 overcurrent release is a thermal-magnetic type — no electronics to fail, no communication module to configure.
Panel fit and environment
Dimensions are 130 mm high, 76.2 mm wide, 70 mm deep — a standard 3-pole MCCB footprint that fits most DIN-rail or screw-mount panel layouts. Front protection is IP40, so it's fine for a clean indoor panel but not for washdown or outdoor exposure. Storage range is -40 °C to 80 °C; operating range is -25 °C to 70 °C.