What this 3VA1180-4EF32-0DC0 brings to a panel
The Siemens SENTRON 3VA1180-4EF32-0DC0 is a 3-pole molded case circuit breaker rated for 80 A continuous at 40 °C, with full rating held up to 50 °C before a gradual derating curve kicks in — at 65 °C it still carries 75 A. That means it handles a warm enclosure without dropping ampacity early, which matters when the panel is packed or near a heat source. Interrupting capacity is the real headline here: 121 kA at 240 VAC, 75.6 kA at 415 VAC, and still 52.5 kA at 440 VAC.
This breaker is a drop-in for panels built around the SENTRON 3VA frame. The 80 A rating and high interrupting capacity suit main feeder protection up to 690 V.
Integration and mounting notes
At 70 mm deep and 76.2 mm wide, it fits alongside other 3VA breakers in a multi-pole lineup without crowding the gland plate. Maximum power loss is 21.7 W, so plan for that heat in a sealed enclosure. The derating table above 50 °C is published, so you can size the breaker for the actual ambient inside the panel rather than oversizing by guesswork.