The DOMF01140 is a 1-pole miniature circuit breaker from Schneider's Domae range — a thermal-magnetic MCB rated 40 A with a C curve, meaning it's built to trip between 5 and 10 times the rated current on magnetic faults (short circuits) and protect against sustained overloads via the thermal bimetal strip.
The tunnel terminals accept up to 35 mm² rigid or 25 mm² flexible wire; strip length is 14 mm, tightening torque 3.5 N·m. IP20 on the finger-safe face, IP40 inside a modular enclosure. This is a panel-board or consumer-unit breaker — sized for a single-pole branch circuit in a residential or light commercial distribution board.
Schneider lists this part as current-production (active lifecycle). No end-of-life notice or successor has been issued — it's a standard catalog item in the Domae line.