ComPacT NS630bN basic frame — 630 A, 50 kA at 415 V
It carries an N breaking capacity code: 50 kA Icu at 415 V AC, 85 kA at 240 V AC, per IEC 60947-2. This is the frame only, without a control unit or protection module, so you select and install the appropriate trip unit separately to match your distribution protection scheme.
Breaking capacity and short-time withstand
The C063N3FM delivers 85 kA Icu at 220/240 V AC, 50 kA at 380/415 V AC, 50 kA at 440 V AC, 40 kA at 500/525 V AC, and 30 kA at 660/690 V AC. The Ics (service breaking capacity) matches the Icu at every voltage level — a 100% rated breaker, meaning it can be reclosed immediately after clearing a fault at its full interrupting rating without derating. That matters for selectivity studies and for panels where you need to maintain coordination after a fault event. Rated short-time withstand current Icw is 19.2 kA for 1 second, which supports delayed tripping for downstream coordination. Integral instant protection is rated 40 kA — the frame's magnetic-only instantaneous trip threshold before the trip unit takes over.
Fixed mounting on a backplate, with dimensions 224 mm high × 210 mm wide × 147 mm deep. Connection pitch is 70 mm between poles. IP40 front protection keeps out tools and small debris; IK07 impact rating means it shrugs off a 2 J hammer blow typical of panel maintenance. Power dissipation is 10 W at rated current — negligible for panel cooling calculations.