BOM / RFQ

Schneider Electric G12F4A125 — Miniature Circuit Breakers (MCB)

Schneider GoPact G12F4A125 MCCB 125A 30kA 4P TM-D

Name: G12F4A125
Brand: Schneider Electric
SKU: G12F4A125
Availability: LimitedAvailability
Author: Huaqiang Hank

MPNG12F4A125

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Schneider Electric GoPact MCCB 125 series, G12F4A125, 4-pole thermal-magnetic circuit breaker, 125 A rated current, 30 kA breaking capacity at 415 V AC, TM-D trip unit, IP20.

$129.13Ref. price · indicative, final on quote

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Schneider Electric G12F4A125 datasheet (PDF)

Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

G12F4A125 — Identification
Parameter	Value
Product name	GoPact MCCB 125
Product range (series)	GoPact MCCB
Product/component type	Circuit breaker
Device application	Distribution

G12F4A125 — Ratings
Parameter	Value
Rated current (In)	125 A at 40 °C
Poles configuration	4P
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 category	Category A
Overvoltage category	III

G12F4A125 — Protection
Parameter	Value
Trip unit technology	Thermal-magnetic
Suitability for isolation	Yes conforming to EN/IEC 60947-2
Electrical durability (cycles)	5000 cycles at 415 V In
Mechanical durability (cycles)	30000 cycles

G12F4A125 — Mechanical
Parameter	Value
Mounting support	Backplate
Control type	Toggle

G12F4A125 — Environmental
Parameter	Value
Operating ambient temperature	-20...55 °C
Storage ambient temperature	-35...85 °C
IP degree of protection	IP20 conforming to IEC 60529
Pollution degree	3 conforming to IEC 60664-1

G12F4A125 — Approvals
Parameter	Value
Standards	EN/IEC 60947-1 EN/IEC 60947-2 EN/IEC 60947-2 Annex H

G12F4A125 — Electrical
Parameter	Value
[Icu] rated ultimate short-circuit breaking capacity	30 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 capacity	15 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

G12F4A125 — Specifications
Parameter	Value
[Ir] long-time protection pick-up adjustment range	0.8...1 x In
Trip unit protection functions	LI

Product details

125 A MCCB for distribution panels — TM-D trip, 30 kA at 415 V

The Schneider Electric GoPact G12F4A125 is a 4-pole molded case circuit breaker rated 125 A at 40 °C, with a 30 kA breaking capacity at 380/415 V AC — enough for most commercial and light industrial distribution boards where fault levels stay under that threshold. The thermal-magnetic TM-D trip unit gives you fixed LI protection: thermal overload (L) and magnetic short-circuit (I). No adjustable settings, so this is a straight swap for a BOM that already calls for a 125 A fixed-trip MCCB.

Mounts fixed to a backplate in any orientation (horizontal, vertical, flat). IP20 finger-safe terminals; the 100 x 130 x 60 mm footprint fits standard MCCB cutouts. Neutral is on the left, and the 4D protection covers all poles including neutral.

The G12F4A125 is current-production.