Key ratings and what they mean for your panel
The 3VA1180-3EF32-0AH0 is a 3-pole molded case circuit breaker from the Siemens SENTRON family, designed for line protection. Its 80 A rating holds across the 40–50 °C range, then derates to 74 A at 70 °C — so in a warm enclosure, keep the continuous load under 75 A to avoid nuisance tripping. Breaking capacity is 75.6 kA at 240 V, stepping down to 52.5 kA at 415 V and 32 kA at 440 V — enough for most industrial distribution panels where fault current is high at the main, but verify your point-of-installation SCCR against the lower 440 V figure if you're feeding a 400 V bus.
Physical fit and integration
The breaker measures 70 mm deep, 76.2 mm wide, and 130 mm high — a standard SENTRON 3VA footprint that snaps onto DIN rail or mounts directly in a panel. The TM240 thermal-magnetic release is fixed, and the unit includes 2 auxiliary switches plus a trip alarm switch (HQ design).