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. For a 3-pole 80 A frame, those numbers put it in the high-fault tier — suitable for main or feeder duty where the available fault current is serious. The 800 V rated insulation voltage backs that up for 690 V line applications. This unit ships with an undervoltage release (UVR) and two HQ auxiliary switches built in, plus the basic switch is a 3VA11804EF320AA0. It's designed for line protection — no ground-fault monitoring, no communication module. Straightforward overcurrent and short-circuit protection in a 70 mm deep, 76.2 mm wide package that fits standard SENTRON mounting.
Lifecycle and sourcing posture
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
The 3VA1180-4EF32-0DC0 mounts on a DIN rail or panel-mount plate in the SENTRON family. 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. Operating temperature range is -25 °C to 70 °C; storage range is -40 °C to 80 °C. 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.