The C16B32D160 is a Schneider Electric ComPacT NSX160B moulded-case circuit breaker, rated 160 A at 40 °C with a MicroLogic 2.2 electronic trip unit. The 40 kA Icu at 240 V AC is the maximum fault current it can safely interrupt once; the 25 kA at 415 V AC is the more relevant number for a 400 V distribution panel. The MicroLogic 2.2 trip unit provides L (long-time overload), So (short-time short-circuit with fixed delay), and I (instantaneous short-circuit) protection curves. That matters on a conveyor or compressor with repetitive overload cycles.
Mounts flat on a backplate in either horizontal or vertical orientation — no derating required for position. Front-connect on both line and load sides, with a 35 mm connection pitch that matches standard busbar systems. The 105 mm width and 161 mm height fit a standard 3-pole MCCB cutout; depth of 86 mm leaves room for rear-access wiring in a 400 mm deep enclosure. Five accessory slots accept auxiliary contacts, shunt trips, undervoltage releases, or communication modules (Modbus, Ethernet) without increasing the breaker footprint. The toggle handle provides local manual operation with clear ON/OFF indication.