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Schneider Electric C25B6TM250 — Miniature Circuit Breakers (MCB)

Schneider Electric C25B6TM250 ComPacT NSX250B, 250A, 25kA at

MPNC25B6TM250
Active

Schneider Electric ComPacT NSX, NSX250B, circuit breaker, 250 A, TM-D thermal-magnetic trip unit, 25 kA Icu at 415 V AC, 4 poles.

$412.13Ref. price · indicative, final on quote
Schneider Electric C25B6TM250 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

C25B6TM250 — Identification
ParameterValue
Product nameComPacT NSX
Product rangeComPacT
Product/component typeCircuit breaker
Device applicationDistribution
C25B6TM250 — Ratings
ParameterValue
Rated current (In)250 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
C25B6TM250 — 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
C25B6TM250 — Mechanical
ParameterValue
Mounting supportBackplate
Control typeToggle
C25B6TM250 — 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 %
C25B6TM250 — Approvals
ParameterValue
StandardsEN/IEC 60947-2
C25B6TM250 — Specifications
ParameterValue
[Ir] long-time protection pick-up adjustment range0.7...1 x In
Trip unit protection functionsLI

Product details

The C25B6TM250 is a 4-pole ComPacT NSX250B circuit breaker with a TM-D thermal-magnetic trip unit rated 250 A at 40 °C. It mounts to a backplate, not a DIN rail — plan for the 140 mm width, 161 mm height, and 86 mm depth in your enclosure layout. The front-facing toggle control and front connections (both upside and downside) keep wiring accessible in a row of breakers.

Rated 40 kA Icu at 220/240 V AC, 25 kA Icu at 380/415 V AC, 20 kA Icu at 440 V AC, and 15 kA Icu at 500 V AC per IEC 60947-2.

Listed as current production.

IP40 front face, IK07 impact resistance. Operates at 0–2000 m without derating; derate above that up to 5000 m. Horizontal or vertical mounting on the backplate, neutral on the left side.

Frequently asked questions

What is the breaking capacity of the C25B6TM250 at 415 V?

25 kA Icu at 380/415 V AC per IEC 60947-2, designated by breaking capacity code B.

What protection functions does the TM-D trip unit provide?

L for thermal overload protection and I for magnetic short-circuit protection. No earth-leakage protection is included.

What compliance documentation is available for the C25B6TM250?

The circuit breaker is certified to EN/IEC 60947-2, suitability for isolation per that standard, pollution degree 3, overvoltage category III, and IP40 / IK07 protection.

MPN
C25B6TM250