Overview
The C25H44V160 is a Schneider ComPacT NSX 4-pole molded case circuit breaker rated 160 A with a 100 kA breaking capacity at 440 V AC, fitted with a MicroLogic 4.2 electronic trip unit that provides overload, short-circuit, and earth-leakage protection. It carries EN/IEC 60947-2 certification with Pollution Degree 3 isolation, and the trip unit's thermal memory holds for 20 minutes before and after tripping, which matters for motor-starting applications where repeated overloads can accumulate.
How it compares
Compared to the 3-pole C25H3 (250 A, 85 kA at 690 V), the C25H44V160 adds a fourth pole for earth-leakage sensing and trades some ampacity for a higher 100 kA breaking capacity at 440 V. The C25H3 runs at 690 V insulation and 800 V AC withstand, so a panel wired for that voltage class cannot simply drop in the C25H44V160 without checking the system voltage and pole count.