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Schneider Electric G12T4F63 — Miniature Circuit Breakers (MCB)

G12T4F63 GoPact MCCB 125, 63 A, 10 kA, 4P, TM-D

MPNG12T4F63
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Schneider Electric GoPact MCCB 125, 4-pole thermal-magnetic circuit breaker, 63 A at 40 °C, 10 kA at 415 V AC, TM-D trip unit, screw terminals, grey (RAL 7035).

$106.64Ref. price · indicative, final on quote
Schneider Electric G12T4F63 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

G12T4F63 — Identification
ParameterValue
Product nameGoPact MCCB 125
Product range (series)GoPact MCCB
Product/component typeCircuit breaker
Device applicationDistribution
G12T4F63 — Ratings
ParameterValue
Rated current (In)63 A at 40 °C
Poles configuration4P
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
G12T4F63 — 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
G12T4F63 — Mechanical
ParameterValue
Mounting supportBackplate
Control typeToggle
G12T4F63 — 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
G12T4F63 — Approvals
ParameterValue
StandardsEN/IEC 60947-1 EN/IEC 60947-2 EN/IEC 60947-2 Annex H
G12T4F63 — Electrical
ParameterValue
[Icu] rated ultimate short-circuit breaking capacity10 kA Icu at 380/415 V AC 50/60 Hz conforming to EN/IEC 60947-2 20 kA Icu at 220/230 V AC 50/60 Hz conforming to EN/IEC 60947-2
[Ics] rated service short-circuit breaking capacity10 kA at 380/415 V AC 50/60 Hz conforming to EN/IEC 60947-2 20 kA at 220/230 V AC 50/60 Hz conforming to EN/IEC 60947-2
G12T4F63 — Specifications
ParameterValue
[Ir] long-time protection pick-up adjustment range1 x In
Trip unit protection functionsLI

Product details

The G12T4F63 is a 4-pole GoPact MCCB 125 rated 63 A at 40 °C with a TM-D thermal-magnetic trip unit providing LI protection — thermal for overload (L) and magnetic for short-circuit (I).

Deployment context

This breaker mounts fixed to a backplate — no DIN-rail adapter — so plan for screw-terminal connection with a 25 mm pole pitch. Front connections top and bottom simplify busbar and cable routing in a panel.

Suitable for isolation per the standard — meaning it can be used as a disconnecting means with visible gap when open. Electrical endurance is 8000 cycles at rated current; mechanical endurance 30,000 cycles. Power dissipation per pole is 18.7 W — factor that into panel thermal calculations.

Frequently asked questions

What is G12T4F63's breaking capacity?

It is rated 10 kA at 380/415 V AC (performance level T), which is the standard breaking capacity for this frame size in distribution duty.

What is the trip unit type on G12T4F63?

TM-D thermal-magnetic with LI protection — thermal for overload (L), magnetic for short-circuit (I). No electronic adjustment; fixed curve.

Where can I buy G12T4F63?

Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — no stock count or price is published here.

What compliance documentation does Schneider provide for G12T4F63?

The breaker carries EN/IEC 60947-1, EN/IEC 60947-2, and EN/IEC 60947-2 Annex H certification. It is suitable for isolation per those standards. RoHS and REACH declarations are standard for the GoPact range; request them with the RFQ.

MPN
G12T4F63