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Schneider Electric C40S4TM400D — Miniature Circuit Breakers (MCB)

Schneider C40S4TM400D ComPacT NSX DC 4-pole 400 A MCCB

MPNC40S4TM400D
Active

Schneider ComPacT NSX DC C40S4TM400D molded case circuit breaker, 4-pole, 400 A thermal-magnetic TM-DC trip unit, 100 kA IC at 750 V DC, fixed mount, toggle control, IP40.

$2,195.77Ref. price · indicative, final on quote
Schneider Electric C40S4TM400D datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jun 2026

Specifications

C40S4TM400D — Identification
ParameterValue
Product nameComPacT NSX DC
Product rangeComPacT
Product/component typeCircuit breaker
Device applicationDistribution
C40S4TM400D — Ratings
ParameterValue
Rated current (In)400 A at 40 °C
Poles configuration4P
Breaking capacity100 kA Icu at 24...125 V DC 1 pole conforming to IEC 60947-2 100 kA Icu at 250 V DC 1 pole conforming to IEC 60947-2 100 kA Icu at 500 V DC 2 poles in series conforming to IEC 60947-2 100 kA Icu at 750 V DC 3 poles in series conforming to IEC 60947-2
Rated service breaking capacity (Ics)100 kA at 24...125 V DC conforming to IEC 60947-2 100 kA at 250 V DC conforming to IEC 60947-2 100 kA at 500 V DC conforming to IEC 60947-2 100 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 categoryCategory A
C40S4TM400D — Protection
ParameterValue
Trip unit technologyThermal-magnetic
Earth-leakage protectionWithout
Suitability for isolationYes 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
C40S4TM400D — Mechanical
ParameterValue
Mounting supportBackplate
Control typeToggle
C40S4TM400D — 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 %
C40S4TM400D — Approvals
ParameterValue
StandardsEN/IEC 60947-2
C40S4TM400D — Specifications
ParameterValue
[Ir] long-time protection pick-up adjustment range0.7...1 x In
Trip unit protection functionsLI

Product details

Overview

The C40S4TM400D is a Schneider ComPacT NSX DC molded case circuit breaker with 4 poles, rated 400 A at 40 °C and a breaking capacity of 100 kA at 750 V DC. It uses a thermal-magnetic TM-DC trip unit with LI protection functions (overload and short-circuit) and is fixed-mounted with a toggle control handle. The enclosure carries an IP40 rating and IK07 mechanical impact protection.

MPN
C40S4TM400D