The Siemens SENTRON 3VA1180-4EF36-0HA0 is a 3-pole molded case circuit breaker (MCCB) rated for line protection, carrying 80 A continuously at 40-50 °C ambient with no derating needed in that band. Breaking capacity hits 75.6 kA at 415 V — enough to handle high-fault industrial distribution panels where upstream coordination demands a solid interrupting rating. The TM240 thermal-magnetic release handles overload and short-circuit protection, and the integrated shunt trip (STL) lets you remotely trip the breaker via a control signal, which is useful for emergency-stop circuits or automated load shedding.
Breaking capacity and coordination
At 415 V the 75.6 kA interrupting rating gives solid SCCR headroom for most industrial panel designs. At 240 V it jumps to 121 kA, so it handles high-fault service-entrance applications as well. The 800 V rated insulation voltage supports 690 V line-to-line systems, with a 52.5 kA break at 440 V and 11.9 kA at 500 V and 690 V. That means it coordinates cleanly with downstream branch breakers across common voltage levels — a key consideration for selectivity studies.
Thermal derating and panel fit
The 80 A rating holds flat from 40 °C through 50 °C, then derates gradually to 74 A at 70 °C. That thermal curve means you don't lose capacity in a warm enclosure unless ambient exceeds 50 °C. Dimensions are 130 mm tall, 76.2 mm wide, 70 mm deep — a compact 3-pole footprint that fits standard panel layouts. The supplied basic switch is order code 3VA11804EF360AA0, so replacement or spare ordering is straightforward.