The C25H32D160 is a Schneider Electric ComPacT NSX250H 3-pole circuit breaker rated 160 A at 40 °C, fitted with a MicroLogic 2.2 electronic trip unit providing L (long-time overload), So (short-time short-circuit with fixed delay), and I (instantaneous short-circuit) protection per EN/IEC 60947-2. Its 100 kA Icu at 240 V AC (70 kA at 415 V, 65 kA at 440 V, 50 kA at 500 V, 35 kA at 525 V, 10 kA at 690 V) gives substantial fault-current headroom for distribution panels where high available fault current is a concern. The 20-minute thermal memory before and after tripping prevents nuisance reclosing on a hot conductor — a detail that matters when coordinating with downstream devices on motor-starting or welding loads.
The 160 A trip-unit rating sets the continuous current limit at 40 °C; above that ambient, derate per the manufacturer's curve. The MicroLogic 2.2 is an electronic trip — adjustable long-time pickup and delay, plus fixed short-time and instantaneous thresholds — so it offers coordination flexibility that a thermal-magnetic breaker cannot. The 3-pole 50/60 Hz AC network rating suits it for three-phase distribution in commercial and industrial switchboards.
Backplate-mounted with front connections — the 105 mm width and 161 mm height fit standard ComPacT NSX cutouts. IK07 impact resistance handles accidental tool drops during commissioning.