The Siemens SENTRON 3VA1080-2ED36-0CH0 is a 3-pole molded case circuit breaker rated for 80 A continuous current at 40 °C, with a TM210 thermal-magnetic release for line protection. It breaks 52.5 kA at 240 V and 32 kA at 415 V, so it handles high-fault utility feeds or transformer secondaries without cascading upstream.
Thermal derating and trip hardware
The 80 A rating holds flat through 50 °C, then derates to 76.8 A at 55 °C, 75.2 A at 60 °C, 73.6 A at 65 °C, and 72 A at 70 °C. The TM210 release is thermal-magnetic — fixed thermal curve, magnetic pickup adjustable via the front dial. No voltage trigger, no phase failure detection, no ground fault monitoring; this is a straight line-protection breaker.