The Schneider Electric EZCV250N3250 is a 3-pole moulded-case circuit breaker from the EasyPact EZCV250N range, rated 250 A at 40 °C and built for distribution duty in commercial and industrial panels. The 20 kA Icu at 440 V AC (IEC 60947-2) is the interrupting rating that governs its fault-clearing capability on a 400 V line; the 85 kA Icu at 240 V AC is higher but only relevant for lower-voltage taps. For a 380–415 V supply the rating is 25 kA Icu, which is the more common figure for European 400 V distribution boards.
The TM-D trip unit is a fixed thermal-magnetic design — the thermal element responds to sustained overloads, the magnetic element to short-circuit peaks. Category A utilisation means it is not intended for motor starting under frequent switching; it is a distribution breaker for feeder and branch circuits. The 10,000-cycle mechanical durability is typical for a panel-mounted MCCB that sees occasional switching, not daily operation. Pollution degree 3 (IEC 60947) means it is rated for conductive pollution in an industrial enclosure — standard for a backplate-mounted breaker in a non-sealed panel.
Mounts fixed to a backplate — no DIN-rail adapter. Front connections on both line and load sides, with a 35 mm connection pitch that matches standard busbar systems. Dimensions are 105 mm wide by 165 mm high by 68 mm deep, so it occupies a 3-pole MCCB footprint typical for 250 A frames. The toggle control and positive contact indication give a visual open/closed status without needing auxiliary contacts.