Its breaking capacity hits 220 kA at 240 V, 154 kA at 415 V, and 121 kA at 440 V — figures that give the specifying engineer serious SCCR headroom for high-fault installations like transformer secondaries or large motor control centers. At 690 V it still clears 17 kA, so it handles 600 V class industrial feeds without derating the interrupting rating. The thermal curve holds full 40 A from 40 °C through 50 °C ambient, then tapers to 38.4 A at 55 °C, 37.6 A at 60 °C, 36.8 A at 65 °C, and 36 A at 70 °C. The TM240 release has an adjustable long-time delay tr up to 1 s, letting you coordinate selectively with downstream feeders.
Integration and footprint
The 3VA1140-6EF36-0AF0 measures 130 mm high × 76.2 mm wide × 70 mm deep.
The 15,000 latching endurance cycles cover the mechanical life of the operating mechanism — adequate for a main feeder breaker that sees infrequent switching, but not designed for daily motor-starting duty. For that, you would want a contactor in series.