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Schneider Electric C10B6TM040C — Miniature Circuit Breakers (MCB)

Schneider Electric C10B6TM040C ComPacT NSX100B, 40 A, 4P, 25

MPNC10B6TM040C
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Schneider Electric ComPacT NSX100B, 4-pole circuit breaker, 40 A thermal-magnetic TM-D trip unit, 25 kA Icu at 415 V AC, toggle control, IP40.

Schneider Electric C10B6TM040C datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

C10B6TM040C — Identification
ParameterValue
Product nameComPacT NSX
Product rangeComPacT
Product/component typeCircuit breaker
Device applicationDistribution
C10B6TM040C — Ratings
ParameterValue
Rated current (In)40 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
C10B6TM040C — 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
C10B6TM040C — Mechanical
ParameterValue
Mounting supportBackplate
Control typeToggle
C10B6TM040C — 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 %
C10B6TM040C — Approvals
ParameterValue
StandardsEN/IEC 60947-2
C10B6TM040C — Specifications
ParameterValue
[Ir] long-time protection pick-up adjustment range0.7...1 x In
Trip unit protection functionsLI

Product details

The Schneider Electric C10B6TM040C is a ComPacT NSX100B circuit breaker — a 4-pole, 40 A thermal-magnetic unit from the NSX family, built to EN/IEC 60947-2 for distribution duty. The 40 A TM-D trip unit handles overload (thermal) and short-circuit (magnetic) protection in one block, so you get the L and I curves without an extra electronic module. Rated 40 A at 50 °C, it's sized for a 40 A feeder or a moderate motor branch circuit out here in the grease.

At 220/240 V it's 40 kA Icu, and at 440 V it's 20 kA Icu.

Front connections top and bottom — no rear-access requirement. Neutral is on the left, and the toggle control is front-accessible.

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. That's typical for a molded-case breaker in distribution — plenty of life for a panel that isn't switched daily.

Frequently asked questions

What is C10B6TM040C's breaking capacity at 415 V?

25 kA Icu at 380/415 V AC 50/60 Hz, conforming to IEC 60947-2. At 220/240 V it's 40 kA Icu, and at 440 V it's 20 kA Icu.

MPN
C10B6TM040C