What this MCCB is for
The Siemens 3VA2110-7MN36-0AC0 is a SENTRON molded case circuit breaker (MCCB) built for motor protection in industrial control panels. Three poles, rated 100 A continuous, with phase-failure detection built in — so it catches a lost phase before the motor cooks.
What the ratings mean for your panel
The 100 A rating holds across the full operating range from 40 °C to 70 °C — no derating curve to chase when the panel gets warm. That's typical for SENTRON breakers but worth confirming if you're used to breakers that lose capacity above 40 °C. Breaking capacity is 330 kA at 240 V AC, 242 kA at 415/440 V, and 3.7 kA at 690 V. That 330 kA at 240 V is high — it handles fault currents on the secondary side of a large transformer without needing upstream fuses. At 690 V the 3.7 kA figure is lower, so check your available fault current if you're running 690 V motors. Dimensions are 105 mm wide, 181 mm high, 86 mm deep — a standard SENTRON 3-pole footprint. It fits the same DIN-rail or panel-mount cutout as other 3VA2/3VA1 breakers, so swapping in a panel designed around a 3VA2110-7HK42-0AA0 is a mechanical drop-in. The wiring and bus connections are the same.
Motor protection specifics
This is the motor protection version of the 3VA2 frame — it includes thermal-magnetic trip elements tuned for motor starting inrush (4 to 17 seconds trip delay range). Phase failure detection is active, so a single-phased motor sees a trip rather than a burn. No undervoltage release, no ground-fault monitoring, no communication module — it's a straightforward thermal-magnetic MCCB with two HQ auxiliary switches for status feedback. Power loss at rated load is 10 W max — low enough to ignore in a ventilated enclosure, but worth noting if you're packing multiple breakers in a sealed box.