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Schneider Electric C12H4TM125L — Miniature Circuit Breakers (MCB)

Schneider Electric C12H4TM125L ComPacT NSXm, 125 A, 4P, 70 k

MPNC12H4TM125L
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Schneider Electric ComPacT NSXm, C12H4TM125L, 125 A at 40 °C, 4P, 70 kA 415 V AC, thermal-magnetic TM-D trip unit, EN/IEC 60947-2.

$452.11Ref. price · indicative, final on quote
Schneider Electric C12H4TM125L datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

C12H4TM125L — Identification
ParameterValue
Product nameComPacT NSXm
Product rangeComPacT
Product/component typeCircuit breaker
Device applicationDistribution
C12H4TM125L — 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
C12H4TM125L — 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
C12H4TM125L — Mechanical
ParameterValue
Mounting supportBackplate
Control typeToggle
Local signalling/indicationFlag (green) for presence of auxiliary contacts
Number of 9 mm pitches12 module
C12H4TM125L — 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 %
C12H4TM125L — Approvals
ParameterValue
StandardsEN/IEC 60947-2
C12H4TM125L — Electrical
ParameterValue
[Icu] rated ultimate short-circuit breaking capacity100 kA Icu at 220...240 V AC 50/60 Hz conforming to IEC 60947-2 70 kA Icu at 380...415 V AC 50/60 Hz conforming to IEC 60947-2 65 kA Icu at 440 V AC 50/60 Hz conforming to IEC 60947-2
[Ics] rated service short-circuit breaking capacity100 kA at 220...240 V AC 50/60 Hz conforming to IEC 60947-2 70 kA at 380...415 V AC 50/60 Hz conforming to IEC 60947-2 65 kA at 440 V AC 50/60 Hz conforming to IEC 60947-2
C12H4TM125L — Specifications
ParameterValue
[Ir] long-time protection pick-up adjustment range0.7...1 x In
Trip unit protection functionsLI

Product details

The Schneider Electric C12H4TM125L is a ComPacT NSXm moulded-case circuit breaker with a 125 A thermal-magnetic TM-D trip unit, 4 poles, and a 70 kA breaking capacity at 415 V AC.

The Everlink lug terminals accept 2.5 to 95 mm² rigid or stranded copper, or 2.5 to 70 mm² flexible copper, with a 35 mm connection pitch (27 mm without spreaders). That's a lot of wire range for a 125 A frame; you can land a 95 mm² feeder without adapters.

Frequently asked questions

What are the key ratings of C12H4TM125L?

Rated 125 A at 40 °C with a 70 kA breaking capacity at 415 V AC, 4 poles, thermal-magnetic TM-D trip unit, conforming to EN/IEC 60947-2.

Where can I buy C12H4TM125L and get current pricing?

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

MPN
C12H4TM125L