The Siemens 3VA1080-4ED36-0AA0 is a SENTRON-series molded case circuit breaker (MCCB) rated 80 A continuous at 40 °C, with a 3-pole configuration and a TM210 thermal-magnetic trip unit designed for line protection — meaning it handles overload and short-circuit protection on distribution feeders, not motor or generator circuits. Its breaking capacity reaches 121 kA at 240 VAC and 75.6 kA at 415 VAC, dropping to 11.9 kA at 690 VAC — figures that tell you where this breaker has the headroom for high-fault installations and where it needs upstream coordination. The TM210 overcurrent release is a fixed thermal-magnetic unit — no interchangeable rating plugs, no electronic adjustments. You set the breaker at 80 A and it stays there. That simplifies ordering but means the trip curve is baked in; if your load profile needs a wider magnetic pickup window, you step to the 3VA11 frame with an electronic trip.
At 40 °C the breaker carries a full 80 A. It holds that rating through 50 °C, then begins a gentle taper: 78 A at 55 °C, 77 A at 60 °C, 75 A at 65 °C, and 74 A at 70 °C. The case dimensions are 130 mm high, 76.2 mm wide, and 70 mm deep — a 3-pole MCCB that fits standard SENTRON mounting footprints. That's the heat you need to evacuate in a sealed enclosure; if you're stacking multiple breakers in a small gland plate, factor the cumulative dissipation into your thermal analysis.
Breaking capacity by voltage — where it fits
The interrupting ratings span the common distribution voltages: 121 kA at 240 V, 75.6 kA at 415 V, 52.5 kA at 440 V, and 11.9 kA at both 500 V and 690 V.