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Schneider Electric C25B42D100 — Miniature Circuit Breakers (MCB)

C25B42D100 ComPacT NSX 100A 4P Circuit Breaker, MicroLogic 2

MPNC25B42D100
Active

Schneider Electric ComPacT NSX, C25B42D100, 100A 4P circuit breaker, MicroLogic 2.2 electronic trip unit, 25 kA Icu at 415 V AC, EN/IEC 60947-2.

$450.48 – $1,238.76Ref. price · indicative, final on quote
Schneider Electric C25B42D100 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

C25B42D100 — Identification
ParameterValue
Product nameComPacT NSX
Product rangeComPacT
Product/component typeCircuit breaker
Device applicationDistribution
C25B42D100 — Ratings
ParameterValue
Rated current (In)100 A at 40 °C
Poles configuration4P
Breaking capacity40 kA Icu at 220/240 V AC 50/60 Hz conforming to IEC 60947-2 25 kA Icu at 380/415 V AC 50/60 Hz conforming to IEC 60947-2 20 kA Icu at 440 V AC 50/60 Hz conforming to IEC 60947-2 15 kA Icu at 500 V AC 50/60 Hz conforming to IEC 60947-2
Rated service breaking capacity (Ics)40 kA at 220/240 V AC 50/60 Hz conforming to IEC 60947-2 25 kA at 380/415 V AC 50/60 Hz conforming to IEC 60947-2 20 kA at 440 V AC 50/60 Hz conforming to IEC 60947-2 15 kA at 500 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
C25B42D100 — 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
C25B42D100 — 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
C25B42D100 — 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 %
C25B42D100 — Approvals
ParameterValue
StandardsEN/IEC 60947-2
C25B42D100 — Specifications
ParameterValue
[Ir] long-time protection pick-up adjustment range40...100 A
Trip unit protection functionsLSoI

Product details

The C25B42D100 is a Schneider Electric ComPacT NSX circuit breaker, 4-pole, rated 100 A at 40 °C with a MicroLogic 2.2 electronic trip unit. The electronic trip unit offers L (long-time overload), So (short-time short-circuit with fixed delay), and I (instantaneous) protection curves, so you can coordinate downstream feeders without nuisance tripping.

Mounts on a backplate in horizontal or vertical orientation, flat on the back. Front connections top and bottom simplify busbar or cable routing in a panel. The 35 mm connection pitch matches standard DIN-rail terminal blocks for auxiliary wiring. IP40 enclosure protection keeps dust out in a clean panel environment; IK07 impact rating handles accidental tool drops during commissioning.

Relative humidity range 0 to 95 % covers most indoor industrial environments.

Frequently asked questions

What is the breaking capacity of C25B42D100 at 415 V?

25 kA Icu at 380/415 V AC 50/60 Hz per IEC 60947-2. The breaking capacity code is B, meaning 25 kA at 415 V.

What protection curves does the MicroLogic 2.2 trip unit offer?

L (long-time overload), So (short-time short-circuit with fixed delay), and I (instantaneous). The trip unit is electronic, rated 100 A at 40 °C.

Where can I buy C25B42D100 and get current pricing?

This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm price and lead time.

MPN
C25B42D100