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Schneider Electric C40N34V400 — Residual Current Breakers (RCCB/RCBO)

Schneider Electric C40N34V400 ComPacT NSX400N MCCB, 400 A, 5

MPNC40N34V400
Active

Schneider Electric ComPacT NSX series, C40N34V400, 3P 400 A MCCB with MicroLogic 4.3 electronic trip unit, 50 kA Icu at 415 V AC, earth-leakage protection integrated.

$1,574.49 – $4,615.38Ref. price · indicative, final on quote
Schneider Electric C40N34V400 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

C40N34V400 — Residual Current Protection
ParameterValue
Earth-leakage protection class / typeClass A
Trip unit technologyElectronic
Local signalling / indicationFlashing LED (green) for ready to operate LED 105 % Ir (red) for overload LED 90 % Ir (orange) for overload
C40N34V400 — Electrical Ratings
ParameterValue
Rated current (In)400 A at 40 °C
Rated operational voltage (Ue)440 V AC 50/60 Hz
Poles description3P
Network typeAC
Network frequency50/60 Hz
Rated insulation voltage (Ui)500 V AC 50/60 Hz
Rated impulse withstand voltage (Uimp)8 kV
Overvoltage categoryIV
Electrical durability12000 cycles at 440 V In/2 6000 cycles at 440 V In 6000 cycles at 690 V In/2 3000 cycles at 690 V In
Mechanical durability (operating cycles)15000 cycles
C40N34V400 — Identification
ParameterValue
Product nameComPacT NSX
Product / component typeEarth leakage circuit breaker
Product range / familyComPacT
Device short nameNSX400N
C40N34V400 — Mechanical
ParameterValue
Mounting supportBackplate
Mounting positionHorizontal and vertical Flat on the back
Control typeToggle
C40N34V400 — Environmental
ParameterValue
Operating ambient temperature-25...70 °C
Storage ambient temperature-50...85 °C
IP degree of protectionIP40 conforming to IEC 60529
Pollution degree3 conforming to IEC 60664-1
Relative humidity0...95 %
Operating altitude0...2000 m without derating 2000 m...5000 m with derating
C40N34V400 — Approvals
ParameterValue
StandardsEN/IEC 60947-2

Product details

It carries a MicroLogic 4.3 electronic trip unit rated at 400 A at 40 °C, so the continuous current capacity is set for a 400 A bus or feeder — no need to oversize for ambient unless the panel exceeds 40 °C. The breaking capacity hits 50 kA Icu at 415 V AC (50/60 Hz), which is the N-frame rating; that means it can safely interrupt a fault up to 50 kA symmetrical at typical European 400 V distribution voltage without welding contacts or venting gas into adjacent gear. The earth-leakage protection is built into the trip unit, not a separate module — the R (residual) function is part of the MicroLogic 4.3's protection suite alongside L (long-time overload), So (short-time short-circuit with fixed delay), and I (instantaneous short-circuit).

Mounts on a backplate in horizontal or vertical orientation. IP40 enclosure rating protects against tools and wires over 1 mm.

Protection logic and coordination

Category A utilisation means it is not intended for frequent switching of motor loads; this is a distribution breaker, not a motor-circuit protector.

Lifecycle stage is current — active catalogue item. Compliance per EN/IEC 60947-2 and UL 60947-4-1.

Frequently asked questions

What protection functions does the MicroLogic 4.3 trip unit provide?

L (long-time overload), So (short-time short-circuit with fixed delay), I (instantaneous short-circuit), and R (earth-leakage protection). The earth-leakage is integrated into the trip unit.

What compliance documentation does this brand provide for C40N34V400?

The breaker is certified to EN/IEC 60947-2 and also carries ratings under UL 60947-4-1 for US applications. Standard RoHS/REACH declarations are available from Schneider Electric.

MPN
C40N34V400