What this 3VA MCCB delivers
The Siemens SENTRON 3VA1180-4EF36-0JA0 is a 3-pole molded case circuit breaker rated for 80 A continuous current at 40 °C, with a TM240 thermal-magnetic overcurrent release. The interrupting capacity at 240 V hits 121 kA, which gives you headroom for high-fault panels where a standard 65 kA MCCB would need a current-limiting fuse upstream. At 415 V the interrupting rating is 75.6 kA, and at 690 V it still holds 11.9 kA — so this breaker handles industrial 400 V distribution without cascading. That's fine for a dedicated feeder where the load doesn't change.
Sizing and thermal reality
At 55 °C it drops to 76.8 A, and at 70 °C it's 72 A. If your enclosure sits near a steam line or a curing press, factor that 10 % reduction at the top end.
Panel fit and auxiliary options
This is a plain-vanilla thermal-magnetic feeder breaker.