What this 100 A MCCB carries — and where the ratings bite
The Siemens 3VA2010-5HN32-0HL0 is a SENTRON molded case circuit breaker rated for 100 A continuous current with no derating across the full operating range from -25 °C to 70 °C — meaning you don't have to upsize the frame for a warm panel. Interrupting capacity sits at 187 kA at 240 V, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 3 kA at 690 V. That 187 kA figure at 240 V covers most high-fault industrial and commercial service-entrance applications without needing a current-limiting fuse ahead of it. This is a 3-pole line-protection design — no ground-fault module, no communication function, no undervoltage release. The auxiliary switch complement is 2 auxiliary switches plus 1 trip alarm switch plus 1 electrical alarm switch (HQ), and the shunt trip release (STL) is built in. Physical footprint: 105 mm wide, 181 mm high, 86 mm deep — standard SENTRON 3VA frame size for 100 A. Power loss maxes at 13.5 W.