Schneider Electric EZC250F3125 is a 3-pole EasyPact EZC250F thermal-magnetic moulded-case circuit breaker (MCCB). Breaking capacity hits 10 kA Icu at 440 V AC, 15 kA at 400-415 V, 18 kA at 380 V, and 25 kA at 220-240 V — all per IEC 60947-2. For DC circuits: 5 kA Icu at 250 V DC 2P. It's Category A (no intentional short-time delay), so it's a standard distribution breaker, not a selective main.
That TM-D thermal-magnetic trip curve means the thermal element handles sustained overloads (cable protection), and the magnetic element snaps on short-circuit. At 380 V that rises to 18 kA, at 220-240 V to 25 kA. Pick your system voltage, that's your interrupting rating. The 690 V rated insulation voltage (Ui) and 550 V rated operational voltage (Ue) frame the system voltage ceiling. It's rated for isolation per IEC 60947-2, so you can use it as a visible-break disconnect.
Fixed mounting on a backplate with front-connect terminals — both line and load connections are front-accessed. Connection pitch is 35 mm per pole. Dimensions: 105 mm wide, 165 mm tall, 60 mm deep. IP20 finger-safe enclosure, IK07 impact resistance. Toggle control with positive contact indication — you can see the contact state through the window. No earth-leakage module on this variant; it's a straight thermal-magnetic breaker.