The Siemens SENTRON 3VA1080-2ED42-0KC0 is a 4-pole molded case circuit breaker (MCCB) rated for 80 A continuous current, built for line protection in distribution panels. It carries a TM210 thermal-magnetic overcurrent release and a shunt trip (STL) auxiliary release. Breaking capacity hits 52.5 kA at 240 V and 32 kA at 415 V — enough for most industrial service entrances and feeder circuits. The front face is IP40 rated, so it's fine in a clean indoor panel but not for washdown areas.
What the ratings mean for your panel
At 80 A continuous, this breaker holds its full rating up to 50 °C ambient — no derating needed in a typical ventilated enclosure. Above that, it steps down: 76.8 A at 55 °C, 75.2 A at 60 °C, 73.6 A at 65 °C, and 72 A at 70 °C. If your panel runs hot near the top of a crowded cabinet, you lose about 10% of capacity. Plan for it. The 4-pole design switches all phases plus the neutral. There's no N-conductor protection built in — the neutral pole is switched but not monitored for overload. That's standard for line-protection MCCBs in TN-S systems where the neutral is bonded upstream. Dimensions are 130 mm high, 101.6 mm wide, 70 mm deep. It mounts on a DIN rail or can be screw-fixed to a backplate. The 70 mm depth is shallow enough to fit most standard distribution boards without hitting the door.