What this MCCB is and what it does
The Siemens 3VA2110-5KP32-0AB0 is a SENTRON molded case circuit breaker (MCCB) designed for line protection — meaning it sits at the feeder or main distribution point, not on a specific motor or load. It's a 3-pole unit rated for 100 A continuous current at up to 70 °C ambient, with no derating needed across that range. That flat thermal curve is unusual; most MCCBs start derating above 40 °C, so this one buys you headroom in a hot panel. Breaking capacity is the headline here: 187 kA at 240 V AC, 121 kA at 415/440 V, 75.6 kA at 500 V, and 3.7 kA at 690 V. That 187 kA at 240 V tells you this breaker is built for high-fault installations — think large transformer secondaries or industrial services where the available fault current is well above typical 65 kA or 100 kA MCCB ratings. The steep drop at 690 V (3.7 kA) means it's not a primary choice for 690 V distribution; at that voltage you'd look at a higher-rated frame. Includes a communication function and two auxiliary switches HP. Insulation voltage rated 800 V. Power loss 10 W maximum.
Panel fit and integration
Dimensions: 181 mm high, 105 mm wide, 86 mm deep. Standard MCCB footprint for this current class.