The C10H3MA013 is a Schneider Electric ComPacT NSX100H three-pole circuit breaker fitted with a magnetic-only (MA) trip unit rated 12.5 A at 65 °C. It is designed specifically for motor protection — the MA trip provides short-circuit (magnetic) protection only, with no thermal overload element, so the overload protection is handled by a separate motor starter or overload relay upstream. That makes this breaker a good fit for a motor branch circuit where you want high fault interruption without nuisance tripping from motor inrush.
Breaking capacity — what the ladder means for your panel
This is the H version of the NSX100 frame, delivering 70 kA Icu at 380/415 V AC and 100 kA at 220/240 V AC per IEC 60947-2. At 480 V AC it still holds 65 kA Icu under UL 60947-4-1. The full ladder: 100 kA at 240 V, 70 kA at 415 V, 65 kA at 440 V, 50 kA at 500 V, 35 kA at 525 V, and 10 kA at 690 V AC. Match your available fault current to the voltage you actually see at the breaker terminals.
Integration and mounting notes
IP40 front face, IK07 impact resistance.
Mechanical durability is rated at 50,000 cycles. Electrical durability depends on the load: 50,000 cycles at 440 V at half rated current, 30,000 cycles at full rated current (12.5 A), and 10,000 cycles at 690 V at full rated current. That gives a realistic service life for a motor branch breaker that sees occasional fault interruption and regular switching.