It is a Category A device (no intentional short-time delay), intended for distribution applications where fast fault clearing is the priority.
The H breaking capacity code on this breaker means it delivers 100 kA Icu at 220–240 V AC and 30 kA at 400–415 V AC — figures that cover the most common panel voltages in commercial and light industrial distribution. At 440 V AC it drops to 20 kA, and at 550 V AC to 10 kA. On the DC side, it offers 10 kA Icu at 125 V DC (1-pole) and 250 V DC (2-pole).
The EZC125H3125 is certified to EN/IEC 60947-1 and EN/IEC 60947-2, with additional compliance to GB/T 14048.2 and JIS C8201-2-2. The IP20 finger-safe enclosure and IK07 impact resistance are standard for panel-mounted distribution breakers.
Fixed-mount backplate installation, 75 mm wide × 130 mm high × 60 mm deep. Front-connected line and load sides. Toggle actuator with positive contact indication — the handle position shows welded contacts, not just spring state. Connection pitch is 25 mm.