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Schneider Electric C40N32D250 — Miniature Circuit Breakers (MCB)

Schneider Electric C40N32D250 ComPacT NSX400N, 250 A, 50 kA

MPNC40N32D250
Active

Schneider Electric ComPacT NSX400N, 3P, 250 A, MicroLogic 2.3 electronic trip unit, 50 kA Icu at 415 V AC, EN/IEC 60947-2.

$782.11Ref. price · indicative, final on quote
Schneider Electric C40N32D250 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

C40N32D250 — Identification
ParameterValue
Product nameComPacT NSX
Product rangeComPacT
Product/component typeCircuit breaker
Device applicationDistribution
C40N32D250 — Ratings
ParameterValue
Rated current (In)250 A at 40 °C
Poles configuration3P
Breaking capacity85 kA Icu at 220/240 V AC 50/60 Hz conforming to IEC 60947-2 50 kA Icu at 380/415 V AC 50/60 Hz conforming to IEC 60947-2 42 kA Icu at 440 V AC 50/60 Hz conforming to IEC 60947-2 30 kA Icu at 500 V AC 50/60 Hz conforming to IEC 60947-2 22 kA Icu at 525 V AC 50/60 Hz conforming to IEC 60947-2 10 kA Icu at 660/690 V AC 50/60 Hz conforming to IEC 60947-2 85 kA Icu at 240 V AC 50/60 Hz conforming to UL 60947-4-1 50 kA Icu at 480 V AC 50/60 Hz conforming to UL 60947-4-1 20 kA Icu at 600 V AC 50/60 Hz conforming to UL 60947-4-1
Rated service breaking capacity (Ics)85 kA at 220/240 V AC 50/60 Hz conforming to IEC 60947-2 50 kA at 380/415 V AC 50/60 Hz conforming to IEC 60947-2 42 kA at 440 V AC 50/60 Hz conforming to IEC 60947-2 30 kA at 500 V AC 50/60 Hz conforming to IEC 60947-2 11 kA at 525 V AC 50/60 Hz conforming to IEC 60947-2 10 kA at 660/690 V AC 50/60 Hz conforming to IEC 60947-2
Rated operational voltage (Ue)690 V AC 50/60 Hz
Rated insulation voltage (Ui)800 V AC 50/60 Hz
Rated impulse withstand voltage (Uimp)8 kV
Network type (AC/DC)AC
Network frequency50/60 Hz
Utilisation categoryCategory A
Overvoltage categoryIII
C40N32D250 — Protection
ParameterValue
Trip unit technologyElectronic
Earth-leakage protectionWithout
Suitability for isolationYes conforming to EN/IEC 60947-2
Electrical durability (cycles)12000 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 (cycles)15000 cycles
C40N32D250 — Mechanical
ParameterValue
Mounting supportBackplate
Control typeToggle
Local signalling/indicationFlashing LED (green) for ready to operate LED 105 % Ir (red) for overload LED 90 % Ir (orange) for overload
C40N32D250 — 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 %
C40N32D250 — Approvals
ParameterValue
StandardsEN/IEC 60947-2
C40N32D250 — Specifications
ParameterValue
[Ir] long-time protection pick-up adjustment range70...250 A
Trip unit protection functionsLSoI

Product details

ComPacT NSX400N — 250 A Distribution Breaker with MicroLogic 2.3

The C40N32D250 is a Schneider Electric ComPacT NSX400N three-pole circuit breaker rated 250 A at 40 °C, fitted with a MicroLogic 2.3 electronic trip unit. It provides L (long-time overload), So (short-time short-circuit with fixed delay), and I (instantaneous short-circuit) protection — a standard combination for distribution and feeder protection in commercial and industrial panels. Rated for isolation per EN/IEC 60947-2, it suits main or branch feeder duty where a visible break and lockout-tagout capability are required.

The N breaking capacity code delivers 50 kA Icu at 415 V AC, 85 kA at 240 V AC, and 30 kA at 500 V AC. At 690 V AC it still holds 10 kA Icu. Category A utilization means no intentional short-time delay for selectivity. Coordination with downstream breakers relies on the instantaneous trip threshold of the MicroLogic 2.3.

The 140 mm width, 255 mm height, and 110 mm depth fit standard distribution panel cutouts. Front connection for both line and load sides simplifies busbar or cable routing. IP40 enclosure protection (IK07 impact resistance) suits indoor panel installation; no additional sealing is required for clean environments. Six equipment slots allow auxiliary contacts, shunt trips, undervoltage releases, or communication modules to be added without removing the breaker. The 45 mm connection pitch matches standard busbar systems.

Frequently asked questions

What is the breaking capacity of C40N32D250 at 415 V?

50 kA Icu at 380/415 V AC 50/60 Hz per IEC 60947-2. This is the N breaking capacity code — suitable for high-fault 415 V distribution boards.

What protection curves does the MicroLogic 2.3 trip unit provide?

L (long-time overload), So (short-time short-circuit with fixed delay), and I (instantaneous short-circuit). The electronic trip unit includes thermal memory that retains the thermal state for 20 minutes before and after tripping.

What are the mounting dimensions for C40N32D250?

140 mm wide, 255 mm high, 110 mm deep. Mounts on a backplate in horizontal or vertical orientation with front connections for line and load.

MPN
C40N32D250