What it is and what it does
The Siemens SENTRON 3VA1180-5GE46-0AA0 is a 4-pole molded case circuit breaker (MCCB) rated for line protection, with a continuous current rating of 80 A across ambient temperatures from 40 °C to 50 °C, derating to 74 A at 70 °C. Breaking capacity hits 187 kA at 240 V, 121 kA at 415 V, and 75.6 kA at 440 V — numbers that matter when you're protecting a distribution board against high-fault utility feeds. The TM220 thermal-magnetic release handles overload and short-circuit curves without a separate trip unit.
Mounting and panel fit
The breaker measures 70 mm deep, 101.6 mm wide, and 130 mm high — a standard MCCB footprint that slides onto a DIN rail or bolts directly to a backplate. Front-side IP40 protection keeps dust out of the enclosure but doesn't handle washdown; keep it inside a rated panel. Power dissipation is 19.2 W max, so factor that into the enclosure thermal budget if you're packing several breakers side by side.