The Schneider C63N44V570 is a ComPacT NSX630N 4-pole molded case circuit breaker rated 570 A at 40 °C, with an N-frame breaking capacity of 50 kA Icu at 415 V AC per IEC 60947-2. That means it handles both overcurrent and ground-fault detection without a separate module, saving a slot in the panel.
Above that, the thermal-memory circuit holds the last 20 minutes of heating and cooling history, so a reclose after a near-trip sees a shorter allowable time before tripping again — relevant for motor-start or inrush-heavy loads that cycle. Breaking capacity is listed at multiple voltages because the arc extinguishes differently at each. At 415 V AC — the common industrial distribution voltage — it interrupts 50 kA symmetrical. That is the N-frame rating: enough for most secondary switchgear downstream of a transformer. The electronic trip unit (MicroLogic 4.3) uses a current transformer and microprocessor rather than a thermal bimetal, so trip curves stay consistent across ambient temperature swings inside the enclosure. The integrated earth-leakage detection (R protection) connects to an external toroid — the breaker itself provides the trip coil and the adjustable IΔn setting via the rotary switch on the front.
No pin-compatible drop-in exists because the MicroLogic 4.3 integrates earth-leakage into the trip unit itself — a standard Micrologic 2.3 or 6.3 would require a separate Vigi module and changes the wiring.
Compliance documentation: the breaker is designed to EN/IEC 60947-2 (the main standard for low-voltage switchgear and controlgear) and carries an IK07 impact rating per IEC 62262 and IP40 protection per IEC 60529. For cross-border shipments, the IEC 60947-2 listing is accepted in most markets that follow IEC standards; UL 60947-4-1 breaking capacities are also listed for the North American market.