The Siemens SENTRON 3VA1180-5EF36-0KA0 is a 3-pole molded case circuit breaker (MCCB) rated for 80 A at 40 °C, with a massive 187 kA interrupting capacity at 240 V — that's the kind of SCCR headroom that lets you coordinate downstream feeders without cascading upstream breakers. It carries a shunt trip (STL) auxiliary release, so you can remotely trip it from a safety circuit or emergency-stop chain. The thermal-magnetic trip unit is a TM240, tuned for line protection duty.
Breaking capacity and derating
At 415 V the interrupting rating drops to 121 kA, at 440 V it's 75.6 kA, and at 500 V or 690 V it holds at 17 kA — still a strong number for most industrial distribution panels. The continuous current derates gracefully: 80 A from 40 °C through 50 °C, then 78 A at 55 °C, 77 A at 60 °C, 75 A at 65 °C, and 74 A at 70 °C. That's a shallow slope, so you don't lose much headroom in a warm enclosure. The insulation voltage is rated 800 V, and maximum power loss is 19.2 W.
Panel fit and environment
The 3VA1180-5EF36-0KA0 measures 130 mm high, 76.2 mm wide, and 70 mm deep — a standard 3-pole MCCB footprint that drops into a SENTRON panelboard or distribution board without re-drilling the mounting plate. Operating temperature range is -25 °C to 70 °C; storage range is -40 °C to 80 °C. No communication function, no undervoltage release, no ground-fault monitoring on this variant.