It carries a continuous current Iu of 40 A at ambient temperatures up to 50 °C, with only a 1 A derating to 39 A at 55 °C and 37 A at 70 °C — so it holds up to the steam near a tire-curing press without losing headroom. The 2-pole configuration and TM210 thermal-magnetic release provide LI (long-time and instantaneous) protection, with a fixed instantaneous pickup at 400 A.
For a data center or industrial feeder, that means you can place this breaker close to the transformer secondary without worrying about cascading failure into upstream gear.
The 3VA1140-5ED22-0AA0 measures 70 mm deep, 50.8 mm wide, and 130 mm tall — a compact 2-pole footprint that fits standard DIN-rail or panel-mount enclosures. Front-face protection is IP40, meaning tools or fingers won't accidentally contact live parts during commissioning. Power loss is 7.2 W maximum, so thermal rise inside a sealed panel stays manageable without forced ventilation.