Line protection MCCB, 80 A frame, TM210 release
The Siemens SENTRON 3VA1080-4ED36-0DC0 is a 3-pole molded case circuit breaker (MCCB) rated for 80 A continuous current at 40 °C, with the TM210 thermal-magnetic overcurrent release. It holds the full 80 A up to 50 °C — no derating needed in a typical warm panel — then steps down 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. That thermal curve means if your enclosure runs hot, you lose less than 10 % of capacity even at the upper operating limit.
Interrupting capacity across voltage tiers
Breaking capacity is voltage-dependent: 121 kA at 240 V, 75.6 kA at 415 V, 52.5 kA at 440 V, and 11.9 kA at 690 V. That 121 kA at 240 V covers high-fault utility feeds; the 11.9 kA at 690 V still clears most industrial motor-circuit faults.
Undervoltage release and auxiliary contacts
Two HQ auxiliary switches (form C) are integrated for remote status feedback. The auxiliary trip accessory is order code 3VA9608-0BB25 if you need to add a shunt trip later.
Mechanical endurance rated at 15 000 cycles, which is typical for a distribution MCCB in a panel that sees infrequent switching.