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Schneider Electric C25N3TM125 — Miniature Circuit Breakers (MCB)

Schneider Electric C25N3TM125 ComPacT NSX 125A MCCB, 50 kA

MPNC25N3TM125
Active

Schneider Electric ComPacT NSX, C25N3TM125, 125 A thermal-magnetic MCCB, 3-pole, 50 kA Icu at 415 V AC, toggle control, front connection.

$492.00 – $1,300.32Ref. price · indicative, final on quote
Schneider Electric C25N3TM125 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

C25N3TM125 — Identification
ParameterValue
Product nameComPacT NSX
Product rangeComPacT
Product/component typeCircuit breaker
Device applicationDistribution
C25N3TM125 — Ratings
ParameterValue
Rated current (In)125 A at 40 °C
Poles configuration3P
Breaking capacity90 kA Icu at 220/240 V AC 50/60 Hz conforming to IEC 60947-2 50 kA Icu at 380/415 V AC 50/60 Hz conforming to IEC 60947-2 50 kA Icu at 440 V AC 50/60 Hz conforming to IEC 60947-2 36 kA Icu at 500 V AC 50/60 Hz conforming to IEC 60947-2 35 kA Icu at 525 V AC 50/60 Hz conforming to IEC 60947-2 10 kA Icu at 660/690 V AC 50/60 Hz conforming to IEC 60947-2 85 kA Icu at 240 V AC 50/60 Hz conforming to UL 60947-4-1 50 kA Icu at 480 V AC 50/60 Hz conforming to UL 60947-4-1 15 kA Icu at 600 V AC 50/60 Hz conforming to UL 60947-4-1
Rated service breaking capacity (Ics)90 kA at 220/240 V AC 50/60 Hz conforming to IEC 60947-2 50 kA at 380/415 V AC 50/60 Hz conforming to IEC 60947-2 50 kA at 440 V AC 50/60 Hz conforming to IEC 60947-2 36 kA at 500 V AC 50/60 Hz conforming to IEC 60947-2 35 kA at 525 V AC 50/60 Hz conforming to IEC 60947-2 10 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
C25N3TM125 — Protection
ParameterValue
Trip unit technologyThermal-magnetic
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
C25N3TM125 — Mechanical
ParameterValue
Mounting supportBackplate
Control typeToggle
C25N3TM125 — 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 %
C25N3TM125 — Approvals
ParameterValue
StandardsEN/IEC 60947-2
C25N3TM125 — Specifications
ParameterValue
[Ir] long-time protection pick-up adjustment range0.7...1 x In
Trip unit protection functionsLI

Product details

125 A MCCB for distribution panels

It protects distribution feeders against overload (L) and short-circuit (I) in a single 3-pole package. Breaking capacity hits 50 kA Icu at 380/415 V AC and 50 kA at 440 V AC, per EN/IEC 60947-2. That N-level interrupting rating suits it for main or sub-feed protection in industrial panels where fault currents stay under 50 kA at 415 V.

At higher ambient temperatures you derate per the thermal curve — the TM-D trip is thermal-magnetic, so the thermal element responds to ambient. Mounting flat on a backplate in any orientation (horizontal or vertical) is allowed, which simplifies panel layout. Mechanical durability is 20,000 cycles; electrical durability is 20,000 cycles at 440 V In/2 and 10,000 cycles at full rated current. That is typical for a distribution breaker — not a switching device, but it handles occasional load-break without issue. IK07 impact rating handles light mechanical shock during installation.

For BOM freeze or compliance audits: the breaker carries EN/IEC 60947-2 certification and UL 60947-4-1 ratings.

Panel integration

Mounts flat on a backplate — no DIN rail adapter needed. Five accessory slots allow adding shunt trips, auxiliary contacts, or motor operators without removing the breaker. Toggle control gives clear visual indication of contact position.

Frequently asked questions

Where can I buy C25N3TM125 and how do I get a price?

The C25N3TM125 is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm price and lead time.

What is C25N3TM125's breaking capacity at 415 V?

The C25N3TM125 delivers 50 kA Icu at 380/415 V AC 50/60 Hz per EN/IEC 60947-2, and 50 kA at 440 V AC. This N-level interrupting rating suits it for main or sub-feed protection in industrial panels.

What compliance standards does C25N3TM125 meet?

The C25N3TM125 is certified to EN/IEC 60947-2 and carries UL 60947-4-1 ratings. It is suitable for isolation per the standard and rated for pollution degree 3 per IEC 60664-1.

MPN
C25N3TM125