Part identification and key ratings
The C25W36E160 is a Schneider Electric ComPacT NSX moulded-case circuit breaker (MCCB) from the ComPacT range, rated 160 A at 40 °C with a MicroLogic 6.2 E electronic trip unit. It carries a 100 kA Icu breaking capacity at 690 V AC 50/60 Hz per EN/IEC 60947-2 — that is the maximum short-circuit current it can safely interrupt without damage, making it suitable for high-fault-level distribution panels. The 3-pole (3P) configuration and 160 A frame cover main feeder or large sub-feed applications in commercial and industrial switchboards.
Trip unit and protection logic
The MicroLogic 6.2 E provides four protection functions: L (long-time overload), S (short-time short-circuit), I (instantaneous short-circuit), and G (ground-fault). The electronic trip unit enables adjustable curves and coordination selectivity — critical for a distribution board where a downstream fault must not take out the upstream breaker. The 20-minute thermal memory before and after tripping ensures the breaker's thermal model tracks the real conductor heating, so re-energising a hot circuit does not miss a second overload event.
Durability and environmental ratings
Mechanical durability is rated at 20,000 cycles; electrical durability at 440 V In (10,000 cycles) and 690 V In (5,000 cycles). The IP40 enclosure protection (IK07 impact) suits installation in a clean, dry switchboard — not a washdown environment. Operating altitude extends to 2000 m without derating, and up to 5000 m with derating applied.
Metering and communication capability
The MicroLogic 6.2 E trip unit includes an energy meter and communicates power quality, energy metering, instantaneous and demand values, maintenance indicators, protection and alarm settings, time-stamped histories, and demand current/power maximeters/minimeters. This data can be read locally via the LCD display or integrated into a building management system through optional communication modules, supporting energy monitoring and predictive maintenance without additional metering hardware.