Its TM210 thermal-magnetic release provides overload and short-circuit protection for feeders and branch circuits. The 40 A rating holds up to 40 A at 40 °C ambient, derating to 37 A at 70 °C — the thermal curve matters when the breaker is packed into a warm enclosure alongside other heat sources.
This MCCB delivers 121 kA at 240 V, 75.6 kA at 415 V, 52.5 kA at 440 V, and 11.9 kA at both 500 V and 690 V. For a 415 V panel fed from a transformer with a prospective short-circuit current of, say, 50 kA, the 75.6 kA rating gives headroom for selectivity with upstream fuses or a larger MCCB.
The 3VA1040-4ED32-0AA0 measures 130 mm high, 76.2 mm wide, and 70 mm deep — a standard 3-pole MCCB footprint that mounts on a DIN rail or directly to a backplate. The TM210 release is factory-set and non-adjustable, so coordination studies should treat the trip curve as fixed.