SCCR and selectivity — what the interrupting ratings mean for panel coordination
The 3VA1180-6EF32-0AG0 is a 3-pole SENTRON molded case circuit breaker rated 80 A continuous (Iu) with a TM240 thermal-magnetic overcurrent release. Its interrupting capacity is the headline figure for panel coordination: 220 kA at 240 V, 154 kA at 415 V, 121 kA at 440 V, and 17 kA at 690 V. Those numbers govern whether this breaker clears a fault without upstream devices needing to trip — critical for selective coordination in a distribution board feeding motor control centers or downstream subpanels. At 415 V, 154 kA SCCR means it can sit ahead of a group of smaller breakers without requiring a current-limiting fuse upstream, provided the available fault current at its terminals stays under that threshold.
Thermal derating — where the 80 A rating holds and where it drops
The 80 A rating is flat from 40 °C through 50 °C ambient. At 55 °C it derates to 76.8 A, then 75.2 A at 60 °C, 73.6 A at 65 °C, and 72 A at 70 °C. That curve matters when the breaker is enclosed in a non-ventilated panel or stacked near other heat sources — the actual continuous current the breaker can carry without nuisance tripping is the derated value at the enclosure's internal ambient, not the nameplate 80 A. Operating range is -25 °C to 70 °C; storage range is -40 °C to 80 °C.
Panel fit — dimensions and integration
Footprint is 76.2 mm wide by 130 mm tall by 70 mm deep. The 70 mm depth is the dimension that determines projection from the mounting surface — relevant when the breaker sits in a shallow enclosure or behind a gland plate. Front IP40 rating means it's protected against tools and wires >1 mm, but not against water ingress; install in a dry indoor panel. The 1 aux + 1 trip alarm switch (HP type) provides remote status and fault indication without needing a separate auxiliary module.