80 A MCCB with 220 kA interrupting rating — selectivity anchor for high-fault panels
The Siemens SENTRON 3VA1180-6EF36-0CC0 is a 3-pole molded case circuit breaker rated for 80 A continuous current at 40 °C through 50 °C, with a TM240 thermal-magnetic overcurrent release. Its interrupting rating hits 220 kA at 240 V, 154 kA at 415 V, and 121 kA at 440 V — numbers that place it as a main or feeder breaker in high-fault panels where upstream SCCR demands serious headroom. At 690 V it still clears 17 kA, so it can serve as a backup breaker in 690 V distribution. The 800 V rated insulation voltage (Ui) confirms the insulation system can handle the transient stress those fault levels produce.
Thermal derating and ambient limits
The 80 A rating holds flat from 40 °C to 50 °C ambient. Above that it derates linearly: 76.8 A at 55 °C, 75.2 A at 60 °C, 73.6 A at 65 °C, and 72 A at 70 °C. Operating ambient range is -25 °C to 70 °C; storage from -40 °C to 80 °C. If the panel runs hot, the 72 A floor at 70 °C still gives margin over a 70 A continuous load.
Integrated undervoltage release and auxiliary contacts
This variant ships with an undervoltage release (UVR) fitted — the release design is listed as undervoltage release, and the integrated auxiliary trip is order code 3VA9608-0BB24. It also carries 2 auxiliary switches (HQ type) for status feedback to a PLC or annunciator. There is no communication module, no ground fault monitoring, and no phase failure detection on this version — it is a straight line-protection breaker with UVR for coordinated undervoltage tripping.
Panel fit and mechanical endurance
The 3VA1180-6EF36-0CC0 measures 130 mm high, 76.2 mm wide, and 70 mm deep — a standard 3-pole MCCB footprint that mounts on a DIN rail or panel plate. Latching endurance is rated at 15 000 operations, which covers routine switching in a distribution board. Front protection is IP40, so it is suited for enclosed panels where no water ingress is expected.