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Schneider Electric G12F3F125 — Miniature Circuit Breakers (MCB)

Schneider Electric GoPact MCCB 125 G12F3F125, 125 A 3P TM-D

MPNG12F3F125
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Schneider Electric GoPact MCCB 125, order code G12F3F125, 3-pole thermal-magnetic circuit breaker, 125 A at 40 °C, TM-D trip unit, 30 kA breaking capacity at 415 V AC.

$95.65Ref. price · indicative, final on quote
Schneider Electric G12F3F125 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

G12F3F125 — Identification
ParameterValue
Product nameGoPact MCCB 125
Product range (series)GoPact MCCB
Product/component typeCircuit breaker
Device applicationDistribution
G12F3F125 — Ratings
ParameterValue
Rated current (In)125 A at 40 °C
Poles configuration3P
Rated operational voltage (Ue)415 V AC 50/60 Hz conforming to EN/IEC 60947-2
Rated insulation voltage (Ui)440 V AC conforming to EN/IEC 60947-2
Rated impulse withstand voltage (Uimp)6 kV conforming to EN/IEC 60947-2
Utilisation categoryCategory A
Overvoltage categoryIII
G12F3F125 — Protection
ParameterValue
Trip unit technologyThermal-magnetic
Suitability for isolationYes conforming to EN/IEC 60947-2
Electrical durability (cycles)5000 cycles at 415 V In
Mechanical durability (cycles)30000 cycles
G12F3F125 — Mechanical
ParameterValue
Mounting supportBackplate
Control typeToggle
G12F3F125 — Environmental
ParameterValue
Operating ambient temperature-20...55 °C
Storage ambient temperature-35...85 °C
IP degree of protectionIP20 conforming to IEC 60529
Pollution degree3 conforming to IEC 60664-1
G12F3F125 — Approvals
ParameterValue
StandardsEN/IEC 60947-1 EN/IEC 60947-2 EN/IEC 60947-2 Annex H
G12F3F125 — Electrical
ParameterValue
[Icu] rated ultimate short-circuit breaking capacity30 kA Icu at 380/415 V AC 50/60 Hz conforming to EN/IEC 60947-2 50 kA Icu at 220/230 V AC 50/60 Hz conforming to EN/IEC 60947-2
[Ics] rated service short-circuit breaking capacity15 kA at 380/415 V AC 50/60 Hz conforming to EN/IEC 60947-2 25 kA at 220/230 V AC 50/60 Hz conforming to EN/IEC 60947-2
G12F3F125 — Specifications
ParameterValue
[Ir] long-time protection pick-up adjustment range1 x In
Trip unit protection functionsLI

Product details

The Schneider Electric GoPact MCCB 125 G12F3F125 is a 3-pole molded case circuit breaker rated 125 A at 40 °C with a TM-D thermal-magnetic trip unit. The fixed-mount, front-connect design with screw terminals suits backplate installation in standard enclosures.

Above that ambient, derating applies — the TM-D thermal element responds to both load current and ambient temperature, so a panel running at 50 °C will need a higher-frame breaker or a reduced load. The 3-pole, 3D protected configuration means all three poles are switched and have thermal-magnetic protection — no shared neutral pole.

IP20 finger-safe terminals. The breaker is marked for isolation — you can safely use it as a disconnecting means under the standard.

Frequently asked questions

Where can I buy G12F3F125?

The G12F3F125 is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time.

What are the key ratings of G12F3F125?

Rated 125 A at 40 °C, 3-pole, TM-D thermal-magnetic trip, 30 kA breaking capacity at 415 V AC, 440 V insulation voltage, IP20 enclosure protection.

What compliance documentation does Schneider provide for G12F3F125?

The breaker is certified to EN/IEC 60947-1, EN/IEC 60947-2, and EN/IEC 60947-2 Annex H for isolation. Overvoltage category III and pollution degree 3 per IEC 60664-1.

MPN
G12F3F125