What this MCCB carries and where it fits
The Siemens SENTRON 3VA1080-3ED36-0AF0 is a 3-pole molded case circuit breaker rated 80 A continuous at 40 °C, with a TM210 thermal-magnetic release tuned for line protection — no ground-fault monitoring, no undervoltage release, no communication module. What ships in the carton is the breaker with one auxiliary switch and one trip alarm switch (HQ type) integrated. The interrupting ratings climb to 75.6 kA at 240 V, drop to 52.5 kA at 415 V, then 32 kA at 440 V, and settle at 7.5 kA at both 500 V and 690 V. That 7.5 kA floor at 690 V tells you this is a 480 V-class MCCB that can handle 600 V-class systems only where the available fault current is low — coordination studies need that number. The 70 mm depth and 76.2 mm width fit the standard SENTRON 3VA footprint; it mounts on a DIN rail or panel base, so it drops into existing 3VA panel layouts without re-drilling.
Thermal derating and the TM210 release
The 80 A rating holds flat from 40 °C through 50 °C. At 55 °C it derates to 78 A, at 60 °C to 77 A, at 65 °C to 75 A, and at 70 °C to 74 A. If the panel ambient runs above 50 °C, the continuous load must be trimmed by that curve — the breaker does not trip early, but the thermal element tracks the enclosure temperature. The TM210 release is a fixed thermal-magnetic type; no interchangeable trip units, no electronic adjustment. That simplifies spares — one part number, one setting. The rated insulation voltage is 800 V, giving headroom for 480 V and 600 V systems. Maximum power loss is 19.2 W, which matters for heat buildup in a dense panel. The operating range is -25 °C to 70 °C; storage range is -40 °C to 80 °C.