The Schneider Electric EZC250H44063 is a 4-pole EasyPact EZC250H molded case circuit breaker with a thermal-magnetic TM-D trip unit rated 63 A at 50 °C.
Breaking capacity — what the H code delivers
The H breaking capacity code means this breaker delivers 25 kA Icu at 440 V AC and 36 kA at 380–415 V AC. At 220–240 V AC it jumps to 85 kA Icu. For DC circuits, it handles 30 kA at 125 V DC (1-pole) and the same at 250 V DC (2-pole). The 10 kA Icu at 550 V AC is the ceiling — if your system voltage sits above 480 V, that's the number for fault-current coordination. For a 480 V distribution panel with an available fault current of, say, 22 kA, this breaker lands comfortably inside its envelope.
Fixed mounting on a backplate with front-front connections — the line and load conductors both terminate on the front face, which keeps the wiring plane accessible and avoids reaching behind the breaker. IP20 finger-safe protection is adequate for enclosed panels; the IK07 impact rating means the front cover withstands a 2 J hammer blow — useful if tools get dropped during commissioning.
Certified to EN/IEC 60947-2, GB/T 14048.2, EN/IEC 60947-1, and JIS C8201-2-2. Category A utilization covers distribution circuits without intentional short-time delay; for motor branch circuits requiring selectivity with downstream breakers, verify the instantaneous trip threshold against the load inrush.