What this MCCB is and what it does
The Siemens 3VA2110-7MN36-0AE0 is a SENTRON molded case circuit breaker (MCCB) built for motor protection. It carries 100 A continuous at 40 °C through all poles, with phase failure detection built in — that means it trips when one phase drops, which keeps a three-phase motor from single-phasing and burning out a winding.
Breaking capacity — what the numbers mean for your panel
This breaker is rated 330 kA at 240 V, 242 kA at 415 V and 440 V, 187 kA at 500 V, and 3.7 kA at 690 V. The 330 kA at 240 V is its highest interrupting rating — that covers high-fault utility feeds or transformer secondaries. The drop to 3.7 kA at 690 V is still enough for most 690 V motor circuits; the important thing is that the available fault current at your service voltage stays under that number. The 3-pole design handles three-phase loads, and the motor-protection curve coordinates with a contactor or starter downstream.
Fit and integration
At 105 mm wide, 181 mm tall, and 86 mm deep, this MCCB fits standard panel-mount cutouts for 100 A frame breakers. The auxiliary switch block is configured for 4 HQ auxiliary switches — that gives you status contacts for the PLC or a remote indication lamp without adding a separate relay. Operating temperature is -25 °C to 70 °C, storage from -40 °C to 80 °C, so it's fine in unheated electrical rooms or outdoor enclosures as long as condensation is managed. Maximum power loss is 10 W — negligible for panel heat load, but worth noting if you're packing a dozen of these in a sealed cabinet.