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Schneider Electric C25W4TM125 — Miniature Circuit Breakers (MCB)

Schneider C25W4TM125 ComPacT NSX circuit breaker, 125 A, 4-pole, 100 kA

MPNC25W4TM125
Active

Schneider Electric ComPacT NSX C25W4TM125 molded case circuit breaker, 4-pole, 125 A thermal-magnetic TM-D trip unit, 100 kA ICu at 690 V AC, fixed mount, toggle control, IEC 60947-2.

$750.40Ref. price · indicative, final on quote
Schneider Electric C25W4TM125 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jun 2026

Specifications

C25W4TM125 — Identification
ParameterValue
Product nameComPacT NSX
Product rangeComPacT
Product/component typeCircuit breaker
Device applicationDistribution
C25W4TM125 — Ratings
ParameterValue
Rated current (In)125 A at 40 °C
Poles configuration4P
Breaking capacity100 kA Icu at 500 V AC 50/60 Hz conforming to IEC 60947-2 100 kA Icu at 525 V AC 50/60 Hz conforming to IEC 60947-2 100 kA Icu at 660/690 V AC 50/60 Hz conforming to IEC 60947-2
Rated service breaking capacity (Ics)100 kA at 500 V AC 50/60 Hz conforming to IEC 60947-2 100 kA at 525 V AC 50/60 Hz conforming to IEC 60947-2 100 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
C25W4TM125 — Protection
ParameterValue
Trip unit technologyThermal-magnetic
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
C25W4TM125 — Mechanical
ParameterValue
Mounting supportBackplate
Control typeToggle
C25W4TM125 — 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 %
C25W4TM125 — Approvals
ParameterValue
StandardsEN/IEC 60947-2
C25W4TM125 — Specifications
ParameterValue
[Ir] long-time protection pick-up adjustment range0.7...1 x In
Trip unit protection functionsLI

Product details

Overview

The C25W4TM125 is a Schneider ComPacT NSX molded case circuit breaker rated 125 A at 40 °C with a 100 kA ICu breaking capacity at 690 V AC, built on the NSX250HB2 frame. It carries a thermal-magnetic TM-D trip unit (L for overload, I for short-circuit), 4 poles, and a toggle control handle. Front-face Class II insulation and IK07 impact rating suit distribution panels in industrial environments.

Compared to the 3-pole C10F3TM025 (25 A, 85 kA ICu), the C25W4TM125 adds a fourth pole, raises the continuous rating to 125 A, and delivers 100 kA ICu — a 15 kA increase in short-circuit withstand. Pick the C25W4TM125 when the panel requires 4-pole switching and a higher fault-current rating; the C10F3TM025 fits 3-pole, lower-current BOMs.

MPN
C25W4TM125