ComPacT NS630bLB basic frame – 630 A, 200 kA at 415 V
The C063B4FM is a Schneider Electric ComPacT NS630b new generation basic frame — a manually operated, fixed-mount 4-pole air circuit breaker frame rated 630 A at 50 °C, with no integral trip unit (protection is added via a separate control unit). Its headline breaking capacity is 200 kA Icu at 415 V AC 50/60 Hz per IEC 60947-2, which means it can safely interrupt a fault current up to 200 kA at that voltage without failing — critical for high-fault installations like large distribution panels or industrial switchboards where upstream transformer capacity is high.
The integral instantaneous protection threshold is set at 40 kA, providing basic short-circuit protection if the control unit is not yet fitted.
Mechanical durability is 10,000 cycles per IEC 60947-2; electrical durability varies by voltage and current — 2,000 cycles at 690 V at full rated current, 3,000 cycles at 690 V at half current, and 4,000 cycles at 440 V at half current. Front face protection is Class II (double insulated), so no additional earth bonding is needed on the front panel. IP40 enclosure protection keeps tools and fingers out; IK07 impact resistance handles incidental knocks during installation.
Fixed backplate mount with a 70 mm connection pitch and 4-pole configuration (neutral left). Dimensions: 224 mm high, 280 mm wide, 147 mm deep. Power dissipation at rated current is 15 W — modest for a 630 A frame, so ventilation in a standard IP40 enclosure is usually adequate. The neutral position on the left is a Schneider convention; verify busbar arrangement if replacing a different make. The frame is designed for distribution applications (not motor protection — that requires a specific control unit).
The C063B4FM is listed as a current-production item (active lifecycle stage). No successor has been announced; the ComPacT NS630b new generation is the current platform. This is the basic frame only — the buyer must add a compatible control unit (e.g., Schneider Micrologic series) and possibly a rotary handle or motor operator depending on the application.