The Siemens SENTRON 3VA2010-6JQ32-0AA0 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 the 70 °C mark. Its breaking capacity hits 242 kA at 240 V, 187 kA at 415 V, and 121 kA at 500 V, with a steep drop to 3 kA at 690 V. That 242 kA figure means it can safely interrupt very high fault currents typical at the main service entrance or on large transformer secondaries, so you don't need an upstream current-limiting fuse for most installations.
Sizing and selectivity
The adjustable thermal-magnetic trip unit spans 20 A to 100 A (initial value 20 A, full-scale 100 A). That gives you flexibility to set the pickup for a 20 A feeder or a 100 A main, but the breaker's frame and contacts are built for the 100 A continuous rating. The insulation voltage is rated 800 V, so it's suitable for 480/277 V or 600 V delta systems with headroom. Ground-fault monitoring uses summation current formation on the L-conductor — a built-in GFCI function without an external module.
Panel integration
Dimensions: 105 mm wide, 181 mm tall, 86 mm deep. That 105 mm width is a standard 4-pole MCCB footprint (the 3-pole version fits the same mounting pattern as a 4-pole frame). The 86 mm depth leaves clearance for rear-access wiring in a typical 200 mm deep enclosure. Power loss is 13.5 W maximum — negligible for panel thermal budgeting, but worth noting if you're packing multiple breakers in a sealed box. Communication function is onboard (likely PROFIBUS or PROFINET via a plug-in module), so you can integrate it into a line-side power monitoring scheme without a separate metering block.