What this 80 A MCCB delivers
The 3VA1180-4EF32-0DH0: Breaking capacity runs 121 kA at 240 V, 75.6 kA at 415 V, 52.5 kA at 440 V, and 11.9 kA at 690 V — figures that cover most industrial distribution panels up to the 690 V tier. The 80 A rating holds flat from 40 °C to 50 °C; above that it derates to 76.8 A at 55 °C, 75.2 A at 60 °C, 73.6 A at 65 °C, and 72 A at 70 °C. For a panel running warm, that derating curve is the real selection gate — not the headline 80 A. Rated insulation voltage Ui is 800 V, and the operating range spans -25 °C to 70 °C, with storage from -40 °C to 80 °C.
Auxiliaries and release configuration
No communication function, no phase failure detection, no ground fault monitoring, no voltage trigger. It is a pure line-protection device: thermal-magnetic, no electronics. That is the mechanical life for the switching mechanism — not the electrical endurance under load, which will be lower depending on the fault current it interrupts. For a main breaker in a distribution board that cycles infrequently, 15,000 operations is well into the service life of the panel.
That 76.2 mm width is a 3-pole MCCB footprint — it occupies three 25.4 mm (1-inch) module spaces on a DIN rail or mounting plate. Verify clearance for the undervoltage release and auxiliary switch wiring before laying out the gland plate. The overcurrent release design is TM240 — a thermal-magnetic trip unit with a 240 A frame rating, but this specific breaker is factory-set for 80 A continuous. For DC network applications, the manufacturer directs to the 3VA device manual for switching power values; that manual is linked under Service & Support.