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Schneider Electric C25B3TM250C — Miniature Circuit Breakers (MCB)

C25B3TM250C ComPacT NSX 250A MCCB, 25 kA 415V

MPNC25B3TM250C
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Schneider Electric ComPacT NSX250B, 250 A thermal-magnetic MCCB, 3-pole, 25 kA Icu at 415 V AC, toggle control.

Schneider Electric C25B3TM250C datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

C25B3TM250C — Identification
ParameterValue
Product nameComPacT NSX
Product rangeComPacT
Product/component typeCircuit breaker
Device applicationDistribution
C25B3TM250C — Ratings
ParameterValue
Rated current (In)250 A at 50 °C
Poles configuration3P
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
C25B3TM250C — 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
C25B3TM250C — Mechanical
ParameterValue
Mounting supportBackplate
Control typeToggle
C25B3TM250C — 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 %
C25B3TM250C — Approvals
ParameterValue
StandardsEN/IEC 60947-2
C25B3TM250C — Specifications
ParameterValue
[Ir] long-time protection pick-up adjustment range0.7...1 x In
Trip unit protection functionsLI

Product details

It's a 3-pole, 250 A thermal-magnetic unit (TM-D trip) rated for distribution duty under EN/IEC 60947-2. At 220/240 V it rises to 40 kA; at 500 V it derates to 15 kA — the 415 V figure is the one that governs most European and Asian commercial installations. No earth-leakage module is integrated, so if ground-fault protection is needed, it must be added externally via a Vigi add-on block.

The 161 mm height, 105 mm width, and 86 mm depth fit standard panel cutouts. IP40 front face and IK07 impact resistance suit enclosed panel installation.

Rated current of 250 A at 50 °C. Electrical durability is 20,000 cycles at 440 V at full rated current, and 10,000 cycles at 440 V at In. Power dissipation per pole is 18.75 W, so total heat load for the 3-pole unit is 56.25 W — factor that into enclosure ventilation. Overvoltage category III for fixed-installation switchgear.

Frequently asked questions

What is the breaking capacity of C25B3TM250C at 415 V?

25 kA Icu at 380/415 V AC 50/60 Hz conforming to IEC 60947-2. This is the B breaking capacity code.

What compliance documentation does this breaker carry?

It conforms to EN/IEC 60947-2. The IP40 and IK07 ratings are per IEC 60529 and IEC 62262 respectively. Pollution degree 3 per IEC 60664-1.

MPN
C25B3TM250C