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Schneider Electric C10W45E040 — Miniature Circuit Breakers (MCB)

Schneider Electric C10W45E040 ComPacT NSX 40A 4P MCCB, 100 k

MPNC10W45E040
Active

Schneider Electric ComPacT NSX, C10W45E040, 4P MCCB, 40 A at 40 °C, MicroLogic 5.2 E electronic trip unit, 100 kA Icu at 500 V AC, EN/IEC 60947-2.

$15.41Ref. price · indicative, final on quote
Schneider Electric C10W45E040 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

C10W45E040 — Identification
ParameterValue
Product nameComPacT NSX
Product rangeComPacT
Product/component typeCircuit breaker
Device applicationDistribution
C10W45E040 — Ratings
ParameterValue
Rated current (In)40 A at 40 °C
Poles configuration4P
Breaking capacity100 kA Icu at 500 V AC 50/60 Hz conforming to IEC 60947-2 100 kA Icu at 525 V AC 50/60 Hz conforming to IEC 60947-2 100 kA Icu at 660/690 V AC 50/60 Hz conforming to IEC 60947-2
Rated service breaking capacity (Ics)100 kA at 500 V AC 50/60 Hz conforming to IEC 60947-2 100 kA at 525 V AC 50/60 Hz conforming to IEC 60947-2 100 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
C10W45E040 — Protection
ParameterValue
Trip unit technologyElectronic
Earth-leakage protectionWithout
Suitability for isolationYes conforming to EN/IEC 60947-2
Electrical durability (cycles)20000 cycles at 440 V In/2 10000 cycles at 440 V In 10000 cycles at 690 V In/2 5000 cycles at 690 V In
Mechanical durability (cycles)20000 cycles
C10W45E040 — 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
C10W45E040 — Environmental
ParameterValue
Operating ambient temperature-25...70 °C
Storage ambient temperature-40...85 °C
IP degree of protectionIP40 conforming to IEC 60529
Pollution degree3 conforming to IEC 60664-1
Relative humidity0...95 %
C10W45E040 — Approvals
ParameterValue
StandardsEN/IEC 60947-2
C10W45E040 — Specifications
ParameterValue
[Ir] long-time protection pick-up adjustment range18...40 A
Trip unit protection functionsLSI

Product details

The C10W45E040 is a Schneider Electric ComPacT NSX 4-pole moulded-case circuit breaker rated 40 A at 40 °C, fitted with a MicroLogic 5.2 E electronic trip unit. The electronic trip unit provides L, S, and I protection curves plus integrated energy metering with time-stamped event logs — useful for a panel that needs both protection and power-quality data without a separate meter.

For a 480 V distribution panel fed by a large transformer, that rating means the breaker clears a bolted fault without exploding or welding its contacts — the kind of fault that would cascade upstream through a lower-rated device. The front-front connection (both line and load from the front) simplifies busbar or cable routing in a backplate-mounted panel — no need to reach behind the breaker.

Frequently asked questions

What is the breaking capacity of C10W45E040?

100 kA Icu at 500 V AC, 100 kA at 525 V AC, and 100 kA at 660/690 V AC, all per IEC 60947-2.

What trip unit does C10W45E040 use?

A MicroLogic 5.2 E electronic trip unit with L (long-time overload), S (short-time short-circuit), and I (instantaneous) protection, plus energy metering.

Where can I buy C10W45E040?

Sourced to order against an RFQ through independent distribution; availability and current pricing are confirmed at quote time.

MPN
C10W45E040