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Schneider Electric C12F4TM125L — Miniature Circuit Breakers (MCB)

Schneider Electric C12F4TM125L ComPacT NSXm MCCB, 125 A, 36

MPNC12F4TM125L
Active

Schneider Electric ComPacT NSXm, 4P, 125 A, thermal-magnetic trip unit TM-D, 36 kA at 415 V AC, EN/IEC 60947-2.

$398.37Ref. price · indicative, final on quote
Schneider Electric C12F4TM125L datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

C12F4TM125L — Identification
ParameterValue
Product nameComPacT NSXm
Product rangeComPacT
Product/component typeCircuit breaker
Device applicationDistribution
C12F4TM125L — Ratings
ParameterValue
Rated current (In)125 A at 40 °C
Poles configuration4P
Rated operational voltage (Ue)440 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
C12F4TM125L — Protection
ParameterValue
Trip unit technologyThermal-magnetic
Earth-leakage protectionWithout
Suitability for isolationYes conforming to IEC 60947-2
Electrical durability (cycles)20000 cycles at 440 V In/2 10000 cycles at 440 V In
Mechanical durability (cycles)20000 cycles
C12F4TM125L — Mechanical
ParameterValue
Mounting supportBackplate
Control typeToggle
Local signalling/indicationFlag (green) for presence of auxiliary contacts
Number of 9 mm pitches12 module
C12F4TM125L — 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 %
C12F4TM125L — Approvals
ParameterValue
StandardsEN/IEC 60947-2
C12F4TM125L — Electrical
ParameterValue
[Icu] rated ultimate short-circuit breaking capacity85 kA Icu at 220...240 V AC 50/60 Hz conforming to IEC 60947-2 36 kA Icu at 380...415 V AC 50/60 Hz conforming to IEC 60947-2 35 kA Icu at 440 V AC 50/60 Hz conforming to IEC 60947-2
[Ics] rated service short-circuit breaking capacity85 kA at 220...240 V AC 50/60 Hz conforming to IEC 60947-2 36 kA at 380...415 V AC 50/60 Hz conforming to IEC 60947-2 30 kA at 440 V AC 50/60 Hz conforming to IEC 60947-2
C12F4TM125L — Specifications
ParameterValue
[Ir] long-time protection pick-up adjustment range0.7...1 x In
Trip unit protection functionsLI

Product details

Mounts on a backplate in horizontal or vertical orientation — flat on the back, no DIN-rail adapter needed. Connection is front-to-front via Everlink lugs accepting 2.5…95 mm² rigid or stranded copper. The 12-module 9 mm pitch (108 mm wide, 137 mm high, 80 mm deep) fits standard enclosure cutouts for the NSXm frame.

Integration notes for the panel builder

IP40 enclosure protection and IK07 impact resistance suit it for general-purpose indoor panel installation — not washdown, not outdoor. Operating altitude 2000 m without derating; above that, derate per the manufacturer's curve up to 5000 m. Relative humidity 0…95 % non-condensing. The neutral position is left; local signalling flag (green) indicates presence of auxiliary contacts. No earth-leakage protection built in — specify an external Vigi module if ground-fault protection is required.

Frequently asked questions

Where can I buy C12F4TM125L and what is the lead time?

The C12F4TM125L is sourced to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time.

What is C12F4TM125L's breaking capacity?

The C12F4TM125L has a performance level F breaking capacity of 36 kA at 415 V AC.

What standards does C12F4TM125L comply with?

The C12F4TM125L complies with EN/IEC 60947-2 for low-voltage switchgear and controlgear, and carries suitability for isolation per that standard.

MPN
C12F4TM125L