The Siemens SENTRON 3VA2110-5JQ32-0BA0 is a 3-pole molded case circuit breaker rated for 100 A continuous current at 40 °C. That 100 A holds steady through 50 °C, then derates linearly to 85 A at 70 °C — critical for high-ambient panels near furnaces or enclosed switchgear where the thermal curve governs actual capacity, not the nameplate number. Breaking capacity is the headline: 187 kA at 240 V, 121 kA at 415 V, and still 79 kA at 500 V. At 690 V it drops to 4.25 kA, so this frame is sized for 400–480 V distribution where fault currents are high — think large motor control centers or transformer secondaries. The 121 kA at 415 V means it can sit downstream of a 2 MVA transformer without needing a current-limiting fuse upstream, which simplifies coordination studies. Communication function is built in, so it can talk to a higher-level energy management or SCADA system — useful for a facility that tracks breaker status and load profiles centrally.
Dimensions are 105 mm wide by 181 mm tall by 86 mm deep. The 105 mm width per 3-pole frame is the SENTRON 3VA2 footprint. Operating temperature range is -25 °C to 70 °C, storage from -40 °C to 80 °C.