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Schneider Electric C40R42D400 — Miniature Circuit Breakers (MCB)

Schneider Electric C40R42D400 ComPacT NSX400R, 400 A, 200 kA

MPNC40R42D400
Obsolete

Schneider Electric ComPacT NSX, NSX400R, circuit breaker, 400 A, 200 kA Icu at 415 V AC, 4P, MicroLogic 2.3 electronic trip unit.

$1,739.63 – $3,040.79Ref. price · indicative, final on quote
Schneider Electric C40R42D400 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

C40R42D400 — Identification
ParameterValue
Product nameComPacT NSX
Product rangeComPacT
Product/component typeCircuit breaker
Device applicationDistribution
C40R42D400 — Ratings
ParameterValue
Rated current (In)400 A at 40 °C
Poles configuration4P
Breaking capacity200 kA Icu at 220/240 V AC 50/60 Hz conforming to IEC 60947-2 200 kA Icu at 380/415 V AC 50/60 Hz conforming to IEC 60947-2 200 kA Icu at 440 V AC 50/60 Hz conforming to IEC 60947-2 80 kA Icu at 500 V AC 50/60 Hz conforming to IEC 60947-2 65 kA Icu at 525 V AC 50/60 Hz conforming to IEC 60947-2 45 kA Icu at 660/690 V AC 50/60 Hz conforming to IEC 60947-2
Rated service breaking capacity (Ics)200 kA at 220/240 V AC 50/60 Hz conforming to IEC 60947-2 200 kA at 380/415 V AC 50/60 Hz conforming to IEC 60947-2 200 kA at 440 V AC 50/60 Hz conforming to IEC 60947-2 80 kA at 500 V AC 50/60 Hz conforming to IEC 60947-2 65 kA at 525 V AC 50/60 Hz conforming to IEC 60947-2 45 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
C40R42D400 — Protection
ParameterValue
Trip unit technologyElectronic
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
C40R42D400 — 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
C40R42D400 — 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 %
C40R42D400 — Approvals
ParameterValue
StandardsEN/IEC 60947-2
C40R42D400 — Specifications
ParameterValue
[Ir] long-time protection pick-up adjustment range160...400 A
Trip unit protection functionsLSoI

Product details

What this 400 A ComPacT NSX carries

The Schneider Electric C40R42D400 is a ComPacT NSX400R molded-case circuit breaker with a 400 A MicroLogic 2.3 electronic trip unit, rated for distribution duty in 4-pole configuration. The MicroLogic 2.3 provides LSI protection: long-time overload (L), short-time short-circuit with fixed delay (So), and instantaneous short-circuit (I).

Breaking capacity across voltage levels

At 220/240 V and 380/415 V the breaker holds 200 kA Icu; at 440 V it holds 200 kA; at 500 V it derates to 80 kA; at 525 V to 65 kA; and at 660/690 V to 45 kA.

Mounts on a backplate in horizontal or vertical orientation, flat against the mounting surface. Front connections on both line and load sides. The 185 mm width, 255 mm height, and 110 mm depth fit standard distribution panel layouts. IP40 enclosure protection handles indoor panel environments; IK07 impact rating covers incidental tool strikes during maintenance.

Compliance and approvals

Designed to EN/IEC 60947-2, pollution degree 3, overvoltage category III. The electronic trip unit is rated 400 A at 40 °C. Electrical durability is 12,000 cycles at 440 V at half rated current, 6,000 cycles at full rated current; mechanical durability is 15,000 cycles.

Frequently asked questions

How do I get pricing and availability for C40R42D400?

The C40R42D400 is sourced and quoted to order against an RFQ through independent distribution; current pricing and availability are confirmed at quote time.

What breaking capacity does C40R42D400 have at 415 V?

The C40R42D400 delivers 200 kA Icu at 380/415 V AC per IEC 60947-2.

What trip unit does C40R42D400 use?

It uses a MicroLogic 2.3 electronic trip unit with LSI protection (long-time overload, short-time short-circuit with fixed delay, and instantaneous short-circuit).

What compliance documentation does Schneider provide for C40R42D400?

The breaker is designed to EN/IEC 60947-2, pollution degree 3, overvoltage category III. Standard documentation includes the IEC declaration of conformity; specific RoHS/REACH/UL documentation should be requested at quote time.

MPN
C40R42D400