The Siemens 3VA1180-6EF32-0CH0 is a SENTRON molded case circuit breaker (MCCB) sized for line protection in distribution panels. Rated continuous current Iu is 80 A, and the interrupting capacity hits 220 kA at 240 V — enough headroom for high-fault utility feeds where selectivity with downstream breakers matters. The TM240 thermal-magnetic release means the thermal element tracks load heating; the magnetic trip is fixed at 240 A nominal, so it clears bolted faults fast without nuisance trips on motor inrush.
Breaking capacity across voltages
Interrupting rating drops with system voltage: 154 kA at 415 V, 121 kA at 440 V, and 17 kA at 690 V. If your panel feeds a 690 V drive bus, that 17 kA figure governs the SCCR — verify it against the available fault current upstream. The 800 V rated insulation voltage (Ui) supports 690 V line-to-line without derating the insulation path.
Thermal derating and ambient
The breaker holds 80 A from 40 °C through 50 °C. Above that, it begins to taper: 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 the panel internal ambient runs hot — say, above 50 °C — size the upstream conductor for the derated value, not the nameplate 80 A. Operating ambient range is -25 °C to 70 °C; storage range is -40 °C to 80 °C.
Auxiliaries and releases
This variant includes an undervoltage release (UVR) — the auxiliary release design is listed as undervoltage release. It also carries 2 auxiliary switches plus 1 trip alarm switch (HQ configuration). The trip indicator is present, so you get a local mechanical flag when the breaker trips on fault. The integrated auxiliary trip order code is 3VA9608-0BB24. No communication function, no ground-fault monitoring, no voltage trigger, no phase-failure detection.
Physical fit
The breaker measures 70 mm deep, 76.2 mm wide, 130 mm tall — a 3-pole frame that fits standard SENTRON panel footprints. IP40 on the front means it is protected against tools and solid objects larger than 1 mm, but not sealed against moisture; keep it inside a rated enclosure if washdown or condensation is present. Latching endurance is rated at 15 000 operations.