The Siemens 3VA1180-6EF32-0JH0 is a SENTRON molded case circuit breaker (MCCB) designed for line protection in distribution panels. It's a 3-pole unit rated 80 A continuous at 40 °C, with a thermal derating curve that holds 80 A through 50 °C, then steps down to 78 A at 55 °C, 77 A at 60 °C, 75 A at 65 °C, and 74 A at 70 °C — useful to know when you're packing breakers into a warm enclosure. Breaking capacity is the headline here: 220 kA at 240 V AC, 154 kA at 415 V, 121 kA at 440 V, and 17 kA at both 500 V and 690 V. That's a high-interrupting rating for the lower voltages, meaning it can sit upstream of a large transformer or feed a bus with high available fault current without needing a current-limiting fuse ahead of it. Physical footprint is 130 mm high, 76.2 mm wide, 70 mm deep — a 3-pole MCCB that fits standard Siemens 3VA panel mounting. It ships with a shunt trip (STL) release and a complement of 2 auxiliary switches plus 1 trip alarm switch HQ, so you get remote status and shunt-trip capability without ordering add-on modules separately.
Sourcing and Lifecycle
Insulation voltage is rated 800 V, which covers 480 V and 600 V class systems with margin. The maximum power loss at rated current is 19.2 W — factor that into your enclosure thermal calculation if you're stacking several breakers in a confined space.
Integration Notes
Designed for line protection — that's the standard MCCB role for feeder circuits, not motor protection (no overload relay class or adjustable thermal curve here). The trip indicator and voltage trigger are built in, so you get a visual flag and a signal output on trip without extra wiring. Operating temperature range is -25 °C to 70 °C; storage from -40 °C to 80 °C. That covers most indoor panel environments, including unheated warehouses in cold climates, as long as the panel stays above -25 °C during operation.