What this MCCB is and what it does
The Siemens SENTRON 3VA2110-5KP32-0HA0 is a 3-pole molded case circuit breaker (MCCB) rated for 100 A continuous current across the full ambient range from 40 °C to 70 °C — no derating needed up to that ceiling. It is designed for line protection in distribution panels, with a shunt trip (STL) auxiliary release and a communication function for remote monitoring or control integration.
Breaking capacity — what the numbers mean for your fault level
At 240 V the breaker interrupts 187 kA — enough for high-fault service-entrance panels. At 415 V and 440 V it holds 121 kA, dropping to 75.6 kA at 500 V and 3.7 kA at 690 V. The 800 V rated insulation voltage (Ui) confirms the frame is built for 690 V systems with margin.
Panel fit and integration
Dimensions are 105 mm wide × 181 mm high × 86 mm deep — a standard MCCB footprint for 3-pole frames in this class. The shunt trip release allows remote tripping from a safety circuit or emergency-stop chain. Communication function supports integration into a higher-level monitoring system, though the specific protocol is not listed here.