The Schneider Electric EZC100H4025 is a 4-pole moulded-case circuit breaker from the EasyPact EZC100H series, rated 25 A at 40 °C with a thermal-magnetic TM-D trip unit. It is built for distribution applications — think panel feeder protection, sub-distribution boards, or main breakers in smaller commercial and industrial switchboards. The 30 kA Icu at 400 V AC (IEC 60947-2) gives it enough interrupting capacity for most low-voltage distribution systems without needing a current-limiting upstream breaker.
Breaking capacity — what each voltage rating means for your system
The EZC100H4025 carries multiple Icu ratings across its voltage range, and the right one governs your installation's available fault current. At 220–240 V AC it handles 50 kA; at 380–400 V AC it is 30 kA; at 440 V AC it drops to 20 kA; and at 550 V AC it is 10 kA. For DC circuits, it manages 10 kA at 125 V DC (1-pole) or 250 V DC (2-pole). The 30 kA at 400 V is the most common spec for European-style 400/230 V distribution — it means this breaker can be installed at a point where the prospective short-circuit current does not exceed 30 kA without needing an upstream current-limiting device. The H breaking capacity code indicates the high-interrupting version of the EZC100 frame.
This breaker mounts fixed to a backplate — no DIN-rail adapter, so plan for drilled and tapped mounting points or a dedicated panel cut-out. The front-facing connections (both line and load) simplify busbar or cable routing in a dead-front panel. Connection pitch is 25 mm, which matches standard distribution busbar spacing. The IP20 finger-safe enclosure is fine for enclosed switchboards but not for washdown areas. The IK07 impact rating means it survives the odd dropped tool during panel assembly.