The Siemens SENTRON 3VA2110-7MQ32-0AA0 is a 3-pole molded case circuit breaker (MCCB) rated for 100 A continuous current, designed specifically for motor protection. It carries a 330 kA interrupting capacity at 240 V, dropping to 3.7 kA at 690 V — the high short-circuit rating at lower voltages makes it suitable for fault-current-heavy industrial distribution panels where coordination with upstream gear matters.
Key Ratings and What They Mean
The 100 A rating holds flat across the full 40 °C to 70 °C ambient range — no derating needed for warm enclosures, which simplifies panel thermal budgeting. Phase failure detection and ground-fault monitoring (summation current formation on L-conductor) are built in, so the breaker can trip on loss of phase or residual current without an external relay. The communication function allows integration into a higher-level monitoring system — useful for remote trip indication and load trending in a managed switchgear setup.
Physical Fit and Panel Integration
Dimensions are 86 mm deep, 105 mm wide, and 181 mm high — a compact footprint for a 100 A MCCB. It mounts on a DIN rail or directly to a backplate, so retrofitting into an existing panel or building a new sub-feed is straightforward.