Overview
The C25B47E160 is a Schneider ComPacT NSX molded case circuit breaker with 4 poles, rated 160 A, and a MicroLogic 7.2 E electronic trip unit providing L, S, I, and R (earth-leakage) protection. It carries a 40 kA Icu breaking capacity at 440 V AC.
How it compares
Compared to the C25N3 (3-pole, 250 A, 85 kA Icu at 690 V AC), the C25B47E160 adds a fourth pole and earth-leakage detection but trades down on current rating (160 A vs 250 A) and Icu (40 kA vs 85 kA). Pick the C25N3 when the load exceeds 160 A or the available fault current is above 40 kA; pick the C25B47E160 when the circuit requires 4-pole isolation and ground-fault protection.