What this MCCB is and what it does
The Siemens 3VA2110-6KQ32-0AA0 is a SENTRON molded case circuit breaker (MCCB) rated for 100 A continuous current, 3-pole, designed for line protection in distribution panels. Its 800 V rated insulation voltage gives headroom for 480 V and 600 V class systems without derating the insulation path. The 242 kA breaking capacity at 240 V and 187 kA at 415 V means it can interrupt high-fault currents typical at the service entrance or main feeder — the 3.7 kA at 690 V is the tail end of the curve, relevant only if you are switching at that voltage.
Panel fit and integration
Dimensions are 181 mm high, 105 mm wide, 86 mm deep — a standard MCCB footprint for 100 A frame size. The 86 mm depth (3.39 in) fits a typical 200 mm deep enclosure with room for rear bus connections. Power loss is 10 W maximum, so no forced cooling needed in a ventilated panel at 40 °C ambient.
Key ratings and what they mean for selection
The 100 A continuous rating holds flat from 40 °C through 70 °C — no derating curve to calculate for elevated ambient temperatures inside a sealed panel. The 150 A minimum and 1 200 A maximum range on the spec sheet refer to the adjustable thermal-magnetic trip range; the fixed continuous rating is 100 A. Ground-fault monitoring uses summation current formation on the L-conductor, so it detects residual current without a separate GFCI module. Communication function is present, which means this breaker can integrate with a building management or power monitoring system via the SENTRON communication bus.