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Schneider Electric G12F3A50 — Miniature Circuit Breakers (MCB)

Schneider Electric G12F3A50 GoPact MCCB 125, 50 A, 30 kA, 3P

MPNG12F3A50
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Schneider Electric GoPact MCCB 125, G12F3A50, 3-pole thermal-magnetic circuit breaker, 50 A rated current, 30 kA breaking capacity at 415 V AC, fixed mount, screw terminals.

$84.01Ref. price · indicative, final on quote
Schneider Electric G12F3A50 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

G12F3A50 — Identification
ParameterValue
Product nameGoPact MCCB 125
Product range (series)GoPact MCCB
Product/component typeCircuit breaker
Device applicationDistribution
G12F3A50 — Ratings
ParameterValue
Rated current (In)50 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
G12F3A50 — Protection
ParameterValue
Trip unit technologyThermal-magnetic
Suitability for isolationYes conforming to EN/IEC 60947-2
Electrical durability (cycles)8000 cycles at 415 V In
Mechanical durability (cycles)30000 cycles
G12F3A50 — Mechanical
ParameterValue
Mounting supportBackplate
Control typeToggle
G12F3A50 — 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
G12F3A50 — Approvals
ParameterValue
StandardsEN/IEC 60947-1 EN/IEC 60947-2 EN/IEC 60947-2 Annex H
G12F3A50 — 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
G12F3A50 — Specifications
ParameterValue
[Ir] long-time protection pick-up adjustment range0.8...1 x In
Trip unit protection functionsLI

Product details

The Schneider Electric G12F3A50 is a GoPact MCCB 125 molded case circuit breaker, 3-pole, with a TM-D thermal-magnetic trip unit rated at 50 A at 40 °C.

For a distribution board fed from a transformer with a typical 25 kA prospective fault level, this provides headroom. The 50 A thermal-magnetic trip (LI protection) covers overloads via the thermal bimetal and short-circuits via the magnetic solenoid — no electronic adjustment, so it is a fixed-characteristic breaker suited for simple load protection. This matches standard 400 V three-phase networks. The breaker is certified for isolation per EN/IEC 60947-2, meaning it can be used as a disconnecting means with a visible gap confirmation.

Fixed mounting on a backplate, with front-connect screw terminals. Connection pitch is 25 mm.

Verify the existing panel's fault level does not exceed 30 kA at 415 V.

Frequently asked questions

What is the breaking capacity of the G12F3A50?

The G12F3A50 has a performance level F breaking capacity of 30 kA at 380/415 V AC, which is the maximum short-circuit current it can safely interrupt at that voltage.

What are the key dimensions of the G12F3A50?

The G12F3A50 measures 75 mm wide, 130 mm high, and 60 mm deep. It mounts fixed on a backplate with a 25 mm connection pitch.

Where can I buy the G12F3A50?

The G12F3A50 is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at the time of quote.

MPN
G12F3A50