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Schneider Electric C25N42D250 — Miniature Circuit Breakers (MCB)

Schneider Electric C25N42D250 ComPacT NSX250N, 250A 4P, 50kA

MPNC25N42D250
Active

Schneider Electric ComPacT NSX NSX250N, 250 A, 4P, electronic trip unit MicroLogic 2.2, breaking capacity 50 kA at 415 V AC, EN/IEC 60947-2.

$692.62Ref. price · indicative, final on quote
Schneider Electric C25N42D250 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

C25N42D250 — Identification
ParameterValue
Product nameComPacT NSX
Product rangeComPacT
Product/component typeCircuit breaker
Device applicationDistribution
C25N42D250 — Ratings
ParameterValue
Rated current (In)250 A at 40 °C
Poles configuration4P
Breaking capacity90 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 50 kA Icu at 440 V AC 50/60 Hz conforming to IEC 60947-2 36 kA Icu at 500 V AC 50/60 Hz conforming to IEC 60947-2 35 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 15 kA Icu at 600 V AC 50/60 Hz conforming to UL 60947-4-1
Rated service breaking capacity (Ics)90 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 50 kA at 440 V AC 50/60 Hz conforming to IEC 60947-2 36 kA at 500 V AC 50/60 Hz conforming to IEC 60947-2 35 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
C25N42D250 — Protection
ParameterValue
Trip unit technologyElectronic
Earth-leakage protectionWithout
Suitability for isolationYes conforming to EN/IEC 60947-2
Electrical durability (cycles)20000 cycles at 440 V In/2 10000 cycles at 440 V In 10000 cycles at 690 V In/2 5000 cycles at 690 V In
Mechanical durability (cycles)20000 cycles
C25N42D250 — 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
C25N42D250 — 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 %
C25N42D250 — Approvals
ParameterValue
StandardsEN/IEC 60947-2
C25N42D250 — Specifications
ParameterValue
[Ir] long-time protection pick-up adjustment range100...250 A
Trip unit protection functionsLSoI

Product details

The Schneider Electric C25N42D250 is a ComPacT NSX NSX250N circuit breaker rated 250 A at 40 °C, 4-pole, with a MicroLogic 2.2 electronic trip unit. The breaking capacity hits 50 kA Icu at 415 V AC (50/60 Hz) per IEC 60947-2, which means it can safely interrupt a 50 kA fault on a 415 V distribution bus without upstream cascading — a common requirement for main or large feeder breakers in industrial panels.

Mounts on a backplate (flat on the back) in horizontal or vertical orientation. IP40 enclosure protection means it is suited for clean indoor environments — no washdown or outdoor exposure. The 140 mm width and 161 mm height fit standard ComPacT NSX cutouts; the 86 mm depth leaves room for rear accessories.

Frequently asked questions

What is the breaking capacity of C25N42D250 at 415 V?

50 kA Icu at 380/415 V AC 50/60 Hz per IEC 60947-2.

What trip unit does C25N42D250 use?

It uses a MicroLogic 2.2 electronic trip unit with L (long-time), So (short-time with fixed delay), and I (instantaneous) protection.

Where can I buy C25N42D250?

Sourced and quoted to order against an RFQ through independent distribution; availability and current pricing are confirmed at quote time.

MPN
C25N42D250