Skip to main content
Log in
Schneider Electric C10N42D040 — Miniature Circuit Breakers (MCB)

Schneider Electric C10N42D040 ComPacT NSX 40A 4P MCCB, 50kA

MPNC10N42D040
Active

Schneider Electric ComPacT NSX, C10N42D040, 4P 40 A MCCB, MicroLogic 2.2 electronic trip unit, 50 kA at 415 V AC, toggle control.

$369.02 – $1,076.17Ref. price · indicative, final on quote
Schneider Electric C10N42D040 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

C10N42D040 — Identification
ParameterValue
Product nameComPacT NSX
Product rangeComPacT
Product/component typeCircuit breaker
Device applicationDistribution
C10N42D040 — Ratings
ParameterValue
Rated current (In)40 A at 40 °C
Poles configuration4P
Breaking capacity90 kA Icu at 220/240 V AC 50/60 Hz conforming to IEC 60947-2 50 kA Icu at 380/415 V AC 50/60 Hz conforming to IEC 60947-2 50 kA Icu at 440 V AC 50/60 Hz conforming to IEC 60947-2 36 kA Icu at 500 V AC 50/60 Hz conforming to IEC 60947-2 35 kA Icu at 525 V AC 50/60 Hz conforming to IEC 60947-2 10 kA Icu at 660/690 V AC 50/60 Hz conforming to IEC 60947-2 85 kA Icu at 240 V AC 50/60 Hz conforming to UL 60947-4-1 50 kA Icu at 480 V AC 50/60 Hz conforming to UL 60947-4-1 10 kA Icu at 600 V AC 50/60 Hz conforming to UL 60947-4-1
Rated service breaking capacity (Ics)90 kA at 220/240 V AC 50/60 Hz conforming to IEC 60947-2 50 kA at 380/415 V AC 50/60 Hz conforming to IEC 60947-2 50 kA at 440 V AC 50/60 Hz conforming to IEC 60947-2 36 kA at 500 V AC 50/60 Hz conforming to IEC 60947-2 35 kA at 525 V AC 50/60 Hz conforming to IEC 60947-2 10 kA at 660/690 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
C10N42D040 — Protection
ParameterValue
Trip unit technologyElectronic
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
C10N42D040 — Mechanical
ParameterValue
Mounting supportBackplate
Control typeToggle
Local signalling/indicationFlashing LED (green) for ready to operate LED 105 % Ir (red) for overload LED 90 % Ir (orange) for overload
C10N42D040 — 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 %
C10N42D040 — Approvals
ParameterValue
StandardsEN/IEC 60947-2
C10N42D040 — Specifications
ParameterValue
[Ir] long-time protection pick-up adjustment range18...40 A
Trip unit protection functionsLSoI

Product details

The Schneider Electric C10N42D040 is a 4-pole ComPacT NSX100N molded-case circuit breaker rated 40 A at 40 °C, fitted with an electronic MicroLogic 2.2 trip unit. The toggle control and backplate mounting suit standard panel layouts.

At 40 A continuous and 50 kA Icu at 415 V AC, this breaker handles typical 40 A feeder or motor circuits in a 400 V distribution system without needing an upstream current-limiting fuse. The electronic trip unit (MicroLogic 2.2) provides adjustable long-time pickup and delay, plus fixed short-time and instantaneous settings — useful for coordinating with downstream branch breakers in a selective-coordination study. The 4-pole (4P) configuration with neutral on the left covers three-phase plus neutral systems common in European and Asian panel designs.

Backplate mounting with front-connect terminals (both upside and downside). IP40 front face and IK07 impact rating suit enclosed panel installation — not for washdown zones. The 5 accessory slots allow field-installable aux contacts, shunt trips, or under-voltage releases without removing the breaker from the panel.

Frequently asked questions

Where can I buy C10N42D040 and how do I get a price?

This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time.

What is C10N42D040's breaking capacity at 415 V?

50 kA Icu at 380/415 V AC 50/60 Hz per IEC 60947-2, which is the N breaking capacity code.

What compliance documentation does this breaker carry?

It is certified to EN/IEC 60947-2 and UL 60947-4-1. The IP40 and IK07 ratings are per IEC 60529 and IEC 62262 respectively. Pollution degree 3 per IEC 60664-1. RoHS/REACH documentation is typically available from the manufacturer on request.

MPN
C10N42D040