What it is and what it does
The Siemens SENTRON 3VA1080-2ED36-0DC0 is a 3-pole molded case circuit breaker (MCCB) rated for 80 A continuous current, built for line protection in distribution panels. The TM210 thermal-magnetic release handles overload and short-circuit protection without a separate trip indicator or voltage trigger — it's a straight electromechanical breaker, no communication module, no ground-fault monitoring. The 80 A rating holds flat from 40 °C up to 50 °C, then derates to 76.8 A at 55 °C and 72 A at 70 °C, which matters if this lands in a hot enclosure next to transformers or drives.
Breaking capacity by voltage — where it fits
Short-circuit breaking capacity varies with system voltage: 52.5 kA at 240 V, 32 kA at 415 V, 13.6 kA at 440 V, and 7.5 kA at 690 V. At 415 V, that 32 kA covers most industrial distribution boards downstream of a transformer; at 690 V the 7.5 kA rating limits it to lower-fault-current applications like motor control centers with upstream current-limiting fuses. The rated insulation voltage is 800 V, so the breaker itself is insulated for 690 V systems.
Panel fit and auxiliary hardware
Dimensions are 76.2 mm wide, 130 mm tall, 70 mm deep — standard 3-pole MCCB footprint for a 70 mm deep enclosure or panel. The front carries IP40 protection, fine for a clean indoor panel but not washdown. It ships with two HQ auxiliary switches (form C) and an undervoltage release (UVR) built in; the integrated auxiliary trip uses order code 3VA9608-0BB25 if you need a replacement. No communication function, no phase-failure detection — this is a basic thermal-magnetic breaker, not a smart unit.