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Schneider Electric G12E4A125 — Miniature Circuit Breakers (MCB)

G12E4A125 GoPact MCCB 125, 125 A, 15 kA, 4P

Name: G12E4A125
Brand: Schneider Electric
SKU: G12E4A125
Availability: LimitedAvailability
Author: OEM Oscar

MPNG12E4A125

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Schneider Electric GoPact MCCB 125, 4-pole thermal-magnetic circuit breaker, 125 A at 40 °C, 15 kA breaking capacity at 415 V AC, TM-D trip unit, IP20, grey (RAL 7035).

$129.13Ref. price · indicative, final on quote

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Schneider Electric G12E4A125 datasheet (PDF)

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

Specifications

G12E4A125 — Identification
Parameter	Value
Product name	GoPact MCCB 125
Product range (series)	GoPact MCCB
Product/component type	Circuit breaker
Device application	Distribution

G12E4A125 — 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

G12E4A125 — 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

G12E4A125 — Mechanical
Parameter	Value
Mounting support	Backplate
Control type	Toggle

G12E4A125 — 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

G12E4A125 — Approvals
Parameter	Value
Standards	EN/IEC 60947-1 EN/IEC 60947-2 EN/IEC 60947-2 Annex H

G12E4A125 — Electrical
Parameter	Value
[Icu] rated ultimate short-circuit breaking capacity	15 kA Icu at 380/415 V AC 50/60 Hz conforming to EN/IEC 60947-2 25 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

G12E4A125 — Specifications
Parameter	Value
[Ir] long-time protection pick-up adjustment range	0.8...1 x In
Trip unit protection functions	LI

Product details

The G12E4A125 is a Schneider Electric GoPact MCCB 125 — a 4-pole molded case circuit breaker with a TM-D thermal-magnetic trip unit rated 125 A at 40 °C. It is designed for distribution applications (category A). Neutral protection is set at 1 x Ir (4D), meaning the neutral pole tracks the phase protection.

Fixed-mount, backplate installation — no DIN rail adapter. Screw terminals front-connected on both line and load sides. The 25 mm pole pitch matches standard busbar systems. IP20 finger-safe terminals; install inside a panel or enclosure for environmental protection. Grey (RAL 7035) housing blends into standard switchgear.