C063H450FM — 630 A 4P ComPacT NS new generation with MicroLogic 5.0
The C063H450FM is a 4-pole 630 A circuit breaker from the Schneider Electric ComPacT NS new generation family, fitted with a MicroLogic 5.0 electronic trip unit. It is rated for 85 kA Icu at 240 V AC and 70 kA Icu at 415 V AC, per EN/IEC 60947-2, making it a distribution-class breaker for main or feeder protection in industrial switchboards.
Breaking capacity is the key selection parameter for fault-withstand. The 20-minute thermal memory means the trip unit remembers prior heating events, preventing nuisance trips on reclose after a brief overload.
Fixed mount on a backplate — this breaker bolts directly to a panel or chassis, not a DIN rail. The 280 mm width, 327 mm height, and 147 mm depth define the cutout and enclosure space; a 70 mm connection pitch matches standard busbar or cable-lug spacing. Front connections both top and bottom simplify busbar runs in a vertical switchboard section. IP40 enclosure protection keeps out tools and debris larger than 1 mm; IK07 impact rating handles low-energy mechanical shocks typical of panel assembly.