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Schneider Electric C40F3TM250D — Miniature Circuit Breakers (MCB)

Schneider Electric C40F3TM250D ComPacT NSX DC MCCB, 250 A, 3

MPNC40F3TM250D

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Schneider Electric ComPacT NSX DC, C40F3TM250D, 250 A thermal-magnetic MCCB, 36 kA Icu at 750 V DC, 3-pole, EN/IEC 60947-2.

$955.68Ref. price · indicative, final on quote

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Schneider Electric C40F3TM250D datasheet (PDF)

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

Specifications

C40F3TM250D — Identification
Parameter	Value
Product name	ComPacT NSX DC
Product range	ComPacT
Product/component type	Circuit breaker
Device application	Distribution

C40F3TM250D — Ratings
Parameter	Value
Rated current (In)	250 A at 40 °C
Poles configuration	3P
Breaking capacity	36 kA Icu at 24...125 V DC 1 pole conforming to IEC 60947-2 36 kA Icu at 250 V DC 1 pole conforming to IEC 60947-2 36 kA Icu at 500 V DC 2 poles in series conforming to IEC 60947-2 36 kA Icu at 750 V DC 3 poles in series conforming to IEC 60947-2
Rated service breaking capacity (Ics)	36 kA at 24...125 V DC conforming to IEC 60947-2 36 kA at 250 V DC conforming to IEC 60947-2 36 kA at 500 V DC conforming to IEC 60947-2 36 kA at 750 V DC conforming to IEC 60947-2
Rated operational voltage (Ue)	750 V DC
Rated insulation voltage (Ui)	750 V DC conforming to IEC 60947-2
Rated impulse withstand voltage (Uimp)	8 kV conforming to IEC 60947-2
Network type (AC/DC)	DC
Utilisation category	Category A

C40F3TM250D — Protection
Parameter	Value
Trip unit technology	Thermal-magnetic
Earth-leakage protection	Without
Suitability for isolation	Yes conforming to EN/IEC 60947-2
Electrical durability (cycles)	2000 cycles at 750 V In/2 1000 cycles at 750 V In
Mechanical durability (cycles)	5000 cycles

C40F3TM250D — Mechanical
Parameter	Value
Mounting support	Backplate
Control type	Toggle

C40F3TM250D — Environmental
Parameter	Value
Operating ambient temperature	-25...70 °C
Storage ambient temperature	-50...85 °C
IP degree of protection	IP40 conforming to IEC 60529
Pollution degree	3 conforming to IEC 60664-1
Relative humidity	0...95 %

C40F3TM250D — Approvals
Parameter	Value
Standards	EN/IEC 60947-2

C40F3TM250D — Specifications
Parameter	Value
[Ir] long-time protection pick-up adjustment range	0.7...1 x In
Trip unit protection functions	LI

Product details

ComPacT NSX DC — 250 A thermal-magnetic MCCB for DC distribution

Breaking capacity is 36 kA Icu across the DC voltage range: 24…125 V DC (1 pole), 250 V DC (1 pole), 500 V DC (2 poles in series), and 750 V DC (3 poles in series) per IEC 60947-2. IP40 enclosure protection, IK07 impact resistance.

Mechanical durability is 5000 cycles; electrical durability is 2000 cycles at 750 V In/2 and 1000 cycles at 750 V In.