Overview
The C25W4TM125 is a Schneider ComPacT NSX molded case circuit breaker rated 125 A at 40 °C with a 100 kA ICu breaking capacity at 690 V AC, built on the NSX250HB2 frame. It carries a thermal-magnetic TM-D trip unit (L for overload, I for short-circuit), 4 poles, and a toggle control handle. Front-face Class II insulation and IK07 impact rating suit distribution panels in industrial environments.
How it compares
Compared to the 3-pole C10F3TM025 (25 A, 85 kA ICu), the C25W4TM125 adds a fourth pole, raises the continuous rating to 125 A, and delivers 100 kA ICu — a 15 kA increase in short-circuit withstand. Pick the C25W4TM125 when the panel requires 4-pole switching and a higher fault-current rating; the C10F3TM025 fits 3-pole, lower-current BOMs.