The Siemens 3VA1180-4EF32-0KA0 is a SENTRON molded case circuit breaker (MCCB) in the line protection version, rated for a continuous current of 80 A across ambient temperatures from 40 °C through 50 °C, with a slight derating curve starting at 55 °C (76.8 A) down to 72 A at 70 °C.
Breaking capacity — what those kA numbers mean for your panel
The interrupting ratings are the headline: 121 kA at 240 V, 75.6 kA at 415 V, 52.5 kA at 440 V, and 11.9 kA at 690 V. The 690 V rating at 11.9 kA is lower but still useful for 690 V distribution in mining or marine applications; just confirm your available fault current is below that threshold.
Dimensions are 130 mm high, 76.2 mm wide, and 70 mm deep — a standard 3-pole MCCB footprint that drops into most SENTRON panelboards and distribution blocks without re-drilling the mounting plate. The shunt trip accessory is specified as order code 3VA9688-0BL33 — if you are retrofitting a shunt trip into an existing 3VA family panel, that is the mating part number.