The Schneider Electric C1034A100 is a MicroLogic 4.2 AL electronic trip unit for the ComPacT NSX100...250 molded-case circuit breaker platform. It is rated 100 A at 40 °C (Ir adjustable 40–100 A) and designed for 3-pole 3D protection on AC distribution networks at 440 V, 50/60 Hz. The trip unit integrates earth-leakage protection (Class A) with adjustable sensitivity and time delay, and provides LSoI protection functions: long-time overload, short-time short-circuit with fixed delay, and instantaneous short-circuit fixed at 1500 A.
The Ir adjustment range of 40–100 A lets you match the trip unit to the actual load current, not just the breaker frame. The instantaneous pickup is fixed at 1500 A (15 x Ir at the maximum Ir setting) — that sets the magnetic-only trip threshold for hard shorts. The short-time pickup Isd is adjustable 1.5–10 x Ir, giving you selectivity coordination with downstream breakers. The integrated earth-leakage (Class A, sensitive to sinusoidal AC and pulsating DC) with adjustable IΔn and Δt (0 ms to 1 s) means you can set nuisance trip delays for inrush or leakage on motor circuits.
The C1034A100 is listed as current-production (active lifecycle). No end-of-life notice or successor order code is published by Schneider Electric for this part.
Integration and deployment
This trip unit mounts into a ComPacT NSX100...250 fixed or plug-in breaker chassis. The breaker itself is DIN-rail or panel-mount, so the trip unit goes in as a field-replaceable electronic module — no need to pull the breaker bus. IP40 front face (finger-safe) suits enclosed panel installation; pollution degree 3 per IEC 60947-1 means it tolerates conductive dust in industrial environments. The local signalling LEDs (green ready, red/orange overload, yellow residual current) give immediate status without opening the panel door.