The SENTRON 3VM1180-4EE42-0AA0 is a 4-pole molded case circuit breaker rated for 80 A continuous current with a TM220 thermal-magnetic release. It's a line-protection device, meaning it's sized for feeder or branch-circuit duty where the main job is overcurrent and short-circuit interruption, not motor-starting curves.
Breaking capacity and what it means for your panel
At 240 V the interrupting rating hits 121 kA; at 415 V it's 76 kA; at 440 V it's 53 kA; at 500 V it drops to 11.9 kA. The 121 kA figure at 240 V tells you this breaker can sit upstream of a high-fault transformer or a large motor-control center without needing a current-limiting fuse ahead of it — that's another SKU you don't need on the shelf. The 76 kA at 415 V covers most European industrial distribution boards where the prospective fault current at the main LV switchboard runs 50–65 kA.
Thermal derating and continuous current
Rated continuous current Iu is 80 A, and the adjustable response value Ir maxes at 80 A as well. The breaker holds 80 A all the way to 50 °C ambient; at 55 °C it's 78 A, at 60 °C it's 77 A, at 65 °C it's 75 A, and at 70 °C it's 74 A. That's a shallow derating curve — you don't lose much headroom in a warm enclosure. The TM220 release is a fixed thermal plus magnetic trip; no electronic adjustment, so what you set on the dial is what you get.
Physical fit and panel integration
Footprint is 101.6 mm wide by 130 mm tall by 70 mm deep. That's a standard 4-pole MCCB width — fits a typical 100 mm DIN-rail or panel-mount cutout. IP40 on the front means it's protected against tools and wires >1 mm, but not against water ingress; keep it inside a closed enclosure. Rated insulation voltage is 690 V, so it's fine on 400/480 V systems with margin.
What's not on this breaker
No communication function, no ground-fault monitoring, no N-conductor protection, and no motor-drive option. It's a plain thermal-magnetic line-protection breaker — no electronics to fail, no aux modules to configure. That keeps the failure mode simple: if it trips, it's either overload or short circuit. Power loss at full load is 19.2 W maximum, so heat dissipation in the panel is manageable.