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Schneider Electric C10B4TM025C — Miniature Circuit Breakers (MCB)

Schneider Electric C10B4TM025C ComPacT NSX 25A 4P MCCB, 40 k

MPNC10B4TM025C
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Schneider Electric ComPacT NSX100B, MCCB, 25 A at 50 °C, TM-D trip unit, 4P, 40 kA Icu at 240 V AC, EN/IEC 60947-2.

Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

C10B4TM025C — Identification
ParameterValue
Product nameComPacT NSX
Product rangeComPacT
Product/component typeCircuit breaker
Device applicationDistribution
C10B4TM025C — Ratings
ParameterValue
Rated current (In)25 A at 50 °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 7 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
C10B4TM025C — Protection
ParameterValue
Trip unit technologyThermal-magnetic
Earth-leakage protectionWithout
Suitability for isolationYes conforming to EN/IEC 60947-2
Electrical durability (cycles)50000 cycles at 440 V In/2 30000 cycles at 440 V In 20000 cycles at 690 V In/2 10000 cycles at 690 V In
Mechanical durability (cycles)50000 cycles
C10B4TM025C — Mechanical
ParameterValue
Mounting supportBackplate
Control typeToggle
C10B4TM025C — 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 %
C10B4TM025C — Approvals
ParameterValue
StandardsEN/IEC 60947-2
C10B4TM025C — Specifications
ParameterValue
[Ir] long-time protection pick-up adjustment range0.7...1 x In
Trip unit protection functionsLI

Product details

MCCB for distribution panels — 25 A, 4-pole, TM-D trip

Four poles, front-connected, and rated for isolation per EN/IEC 60947-2. The 40 kA Icu at 240 V AC (25 kA at 415 V, 20 kA at 440 V, 15 kA at 500 V) gives you the interrupting capacity to handle substantial fault current in a distribution panel — the 25 kA at 415 V AC is the figure most European industrial panels will care about for coordination studies.

Breaking capacity and coordination — what the ratings mean

At 240 V AC it delivers 40 kA Icu, which covers high-fault scenarios common in North American panels.

Mounts flat on a backplate — no DIN-rail adapter on this frame; it's a bolt-on MCCB for distribution panels. Accepts horizontal or vertical orientation. Front connections both top and bottom.

Durability and service life

Mechanical durability is 50,000 cycles; electrical durability ranges from 50,000 cycles at 440 V In/2 down to 10,000 cycles at 690 V In. For a distribution breaker that sees infrequent switching (maybe a few dozen operations per year), this is more than adequate. The 0 to 2,000 m operating altitude without derating covers most installations; above that, derating applies.

Frequently asked questions

What is the breaking capacity of the C10B4TM025C at 415 V?

25 kA Icu at 380/415 V AC 50/60 Hz, conforming to EN/IEC 60947-2. The B code confirms 25 kA at 415 V AC.

MPN
C10B4TM025C