The Siemens SENTRON 3VA1180-5EF32-0DH0 is a 3-pole molded case circuit breaker (MCCB) rated 80 A continuous at 40 °C, with a breaking capacity of 187 kA at 240 VAC — that's the short-circuit current it can safely interrupt without welding contacts or rupturing the case. At 415 V the rating drops to 121 kA, at 440 V to 75.6 kA, and at 500/690 V to 17 kA, so the voltage you're protecting against determines the fault level this breaker can handle.
No communication function is built in, so if you need remote trip or energy monitoring, you'll add an external module.
Thermal derating and power loss
Above that it derates: 78 A at 55 °C, 77 A at 60 °C, 75 A at 65 °C, and 74 A at 70 °C. Maximum power loss is 21.7 W, which is modest for an 80 A frame; it won't cook adjacent components in a well-ventilated enclosure.
The 70 mm depth means it clears most shallow enclosures — check your gland-plate clearance if you're retrofitting into a tight cabinet.
