The Schneider Electric C10W45E100 is a ComPacT NSX molded-case circuit breaker with a MicroLogic 5.2 E electronic trip unit, rated 100 A at 40 °C. It carries a 100 kA Icu breaking capacity at 690 V AC 50/60 Hz per IEC 60947-2, which means it can safely interrupt fault currents up to that level without upstream cascading — sized for high-fault-capacity distribution panels where a standard 25 kA or 36 kA breaker would need a current-limiting fuse or a larger upstream device. The 4-pole (4P) configuration with neutral on the left suits three-phase plus neutral distribution in commercial and industrial switchboards. The electronic trip unit provides L (long-time overload), S (short-time short-circuit), and I (instantaneous short-circuit) protection curves, plus integrated energy metering — demand current/power, power quality indicators, time-stamped event logs, and protection/alarm settings are all communicated via the breaker's data interface.
IK07 impact rating per IEC 62262 means the enclosure withstands a 2 J hammer blow — adequate for general industrial panel environments where accidental tool drops happen. Five accessory slots allow plug-in modules for communication, auxiliary contacts, shunt trips, or under-voltage releases without rewiring the main circuit.
Durability and environmental limits
Rated for 20,000 mechanical cycles and 20,000 electrical cycles at 440 V In/2, 10,000 cycles at 440 V In, and 5,000 cycles at 690 V In/2. That electrical endurance at full rated voltage is typical for a distribution breaker — not designed for frequent switching like a contactor, but adequate for infrequent load isolation and fault interruption.