The Schneider Electric C25V45E100 is a ComPacT NSX circuit breaker with a MicroLogic 5.2 E electronic trip unit, rated 100 A at 40 °C. It breaks 85 kA Icu at 500 V AC 50/60 Hz per IEC 60947-2, so it handles high-fault utility feeds or large transformer secondaries without cascading upstream. The 4P (four-pole) construction with left-side neutral suits distribution panels where full isolation of all conductors is required.
Trip unit and protection
The MicroLogic 5.2 E provides L (long-time overload), S (short-time short-circuit), and I (instantaneous) protection curves, plus integrated energy metering. The LCD display shows power quality, demand values, time-stamped event logs, and energy data, which saves panel space by eliminating a separate power meter.
Rated 85 kA Icu at 500 V AC, 80 kA at 525 V, and 75 kA at 660/690 V, this breaker sits in the HB1 breaking capacity class.
Mechanical and electrical endurance
Rated for 20,000 mechanical cycles and 20,000 electrical cycles at 440 V In/2, dropping to 10,000 cycles at full rated current 440 V In. At 690 V, half-load switching yields 10,000 cycles; full-load halves that to 5,000. That is typical for a molded-case distribution breaker — it is not a contactor cycled every few seconds, but it handles routine load switching and isolation without premature wear.
Mounting and environment
Mounts on a backplate in horizontal or vertical orientation. Front connections on both upside and downside simplify busbar or cable routing in a panel. IK07 impact rating handles accidental tool drops during maintenance.