What ships in the carton — and what the ratings mean for your panel
The Siemens SENTRON 3VA1080-3ED42-0CA0 is a 4-pole molded case circuit breaker (MCCB) rated for 80 A continuous at 40 °C, with a TM210 thermal-magnetic overcurrent release. It ships with the undervoltage release (UVR) already fitted — no separate ordering or field-install step for that coil. The kit is complete: breaker body, UVR, and the line/load terminals. No holes in the box. The 80 A rating holds across the 40–50 °C band; above that it derates to 78 A at 55 °C and 74 A at 70 °C. For a panel running warm, the 70 °C figure is the one to size against — not the 40 °C headline. Breaking capacity is 75.6 kA at 240 V AC, 52.5 kA at 415 V, and 32 kA at 440 V — enough for most industrial service-entrance or feeder positions. At 690 V it still holds 7.5 kA, which covers downstream coordination in 690 V drives or transformer secondaries. Rated insulation voltage is 800 V, so the breaker is comfortable in 480/277 V or 600 V panels with headroom to spare. Power loss runs 21.7 W max — factor that into enclosure thermal calculations if you're packing several breakers in a small can.
Panel fit and mounting
Dimensions: 130 mm tall, 101.6 mm wide, 70 mm deep. The 4-pole width (101.6 mm / 4 in) is standard for a 4-pole MCCB in this class — it drops into the same footprint as other SENTRON 3VA 4-pole frames. Mounting is via screw-mount or DIN rail adapter (check the accessory list for the rail adapter if your panel uses DIN). No communication module, no ground-fault monitoring, no trip indicator on this variant — it's a straight line-protection breaker with undervoltage release. If you need those extras, look at the 3VA11 or 3VA12 series within the same frame size.