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Schneider Electric C40F3TM400 — Miniature Circuit Breakers (MCB)

Schneider Electric C40F3TM400 ComPacT NSX400F MCCB, 400 A, 3

MPNC40F3TM400
Active

Schneider Electric ComPacT NSX400F, 3-pole MCCB, 400 A, TM-D trip unit, 36 kA at 415 V AC, IP40, backplate DIN rail mount.

Schneider Electric C40F3TM400 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

C40F3TM400 — Identification
ParameterValue
Product nameComPacT NSX
Product rangeComPacT
Product/component typeCircuit breaker
Device applicationDistribution
C40F3TM400 — Ratings
ParameterValue
Rated current (In)400 A at 40 °C
Poles configuration3P
Breaking capacity40 kA Icu at 220/240 V AC 50/60 Hz conforming to EN/IEC 60947-2 36 kA Icu at 380/415 V AC 50/60 Hz conforming to EN/IEC 60947-2 30 kA Icu at 440 V AC 50/60 Hz conforming to EN/IEC 60947-2 25 kA Icu at 500 V AC 50/60 Hz conforming to EN/IEC 60947-2 20 kA Icu at 525 V AC 50/60 Hz conforming to EN/IEC 60947-2 10 kA Icu at 660/690 V AC 50/60 Hz conforming to EN/IEC 60947-2
Rated service breaking capacity (Ics)40 kA at 220/240 V AC 50/60 Hz conforming to EN/IEC 60947-2 36 kA at 380/415 V AC 50/60 Hz conforming to EN/IEC 60947-2 30 kA at 440 V AC 50/60 Hz conforming to EN/IEC 60947-2 25 kA at 500 V AC 50/60 Hz conforming to EN/IEC 60947-2 10 kA at 525 V AC 50/60 Hz conforming to EN/IEC 60947-2 10 kA at 660/690 V AC 50/60 Hz conforming to EN/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
C40F3TM400 — Protection
ParameterValue
Trip unit technologyThermal-magnetic
Earth-leakage protectionWithout
Suitability for isolationYes conforming to EN/IEC 60947-2
Electrical durability (cycles)12000 cycles at 440 V In/2 6000 cycles at 440 V In 6000 cycles at 690 V In/2 3000 cycles at 690 V In
Mechanical durability (cycles)15000 cycles
C40F3TM400 — Mechanical
ParameterValue
Mounting supportBackplate DIN rail
Control typeToggle
Contact position indicatorYes
C40F3TM400 — 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 %
C40F3TM400 — Approvals
ParameterValue
StandardsEN/IEC 60947-2
C40F3TM400 — Specifications
ParameterValue
[Ir] long-time protection pick-up adjustment range0.7...1 x In

Product details

That 36 kA at 415 V is the number to check against your upstream transformer and system fault level; the breaker also carries 40 kA at 240 V, 30 kA at 440 V, and 20 kA at 525 V, all per EN/IEC 60947-2. The 3-pole (3P) configuration and Category A utilisation class mean this breaker is designed for distribution duty — not for direct motor switching under load.

The 45 mm connection pitch and 6 accessory slots leave room for shunt trips, auxiliary contacts, or motor mechanisms without reworking the panel layout. IP40 enclosure rating keeps out tools and fingers but not washdown — install inside a cabinet. Operates in any orientation (horizontal, vertical, flat on back). Derate above 2000 m altitude; no derating needed below that. Ambient relative humidity up to 95 % is within spec.

Frequently asked questions

What is the breaking capacity of the C40F3TM400 at 415 V?

36 kA Icu at 380/415 V AC 50/60 Hz per EN/IEC 60947-2. That is the F breaking capacity code — the rating that governs fit for most 400 V distribution panels.

Where can I buy the C40F3TM400?

Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm commitment.

Does the C40F3TM400 include earth-leakage protection?

No. The TM-D trip unit provides thermal-magnetic overload and short-circuit protection only; earth-leakage protection is not built in.

MPN
C40F3TM400