The Siemens SENTRON 3VA1180-5EF32-0KC0 is a 3-pole molded case circuit breaker rated 80 A at 40 °C, with a maximum breaking capacity of 187 kA at 240 V AC. The 80 A continuous rating holds steady through 50 °C (still 80 A), then derates gradually to 74 A at 70 °C, so panel ambient temperature matters for sizing.
The 76.2 mm width (3 inches) is the standard 3-pole MCCB footprint for SENTRON 3VA1 frames — fits existing DIN-rail or panel-mount cutouts without re-drilling. Depth of 70 mm leaves room for rear-access wiring or busbar connections in a typical 200 mm deep enclosure.
Breaking capacity varies by system voltage: 187 kA at 240 V, 121 kA at 415 V, 75.6 kA at 440 V, and 17 kA at 500 V or 690 V. The steep drop above 440 V means you need to verify the available fault current at your specific line voltage — at 480 V the 75.6 kA figure at 440 V is the closest published value, but the 500 V rating (17 kA) governs if your system is 480/277 V. For 600 V class systems, the 690 V rating (17 kA) applies. Always coordinate with upstream protective devices to ensure selectivity.