The Siemens 3VA2010-5KP32-0DH0 is a 3-pole SENTRON molded case circuit breaker (MCCB) rated for line protection with a continuous current Iu of 100 A and a rated insulation voltage Ui of 800 V.
Breaking capacity across voltages — the so-what
Breaking capacity drops with voltage: 187 kA at 240 V, 121 kA at 415 V and 440 V, 79 kA at 500 V, and 3.4 kA at 690 V. The 121 kA at 415 V is the figure most relevant for European 400 V three-phase panels — it exceeds typical utility fault levels, so the breaker can be applied without series fusing in most commercial and light industrial installations.
Thermal derating and ambient limits
Rated 100 A up to 50 °C ambient; above that it derates linearly to 85 A at 70 °C. Operating range is -25 °C to +70 °C, storage -40 °C to +80 °C. The 16 W maximum power loss matters for panel heat budget — in a sealed enclosure with multiple breakers, that adds up.
Integrated auxiliary and undervoltage release
Communication function is also present, allowing integration into higher-level monitoring systems.