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Schneider Electric G12E3F40 — Miniature Circuit Breakers (MCB)

G12E3F40 GoPact MCCB 125, 40 A, 15 kA, 3P TM-D

MPNG12E3F40
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Schneider Electric GoPact MCCB 125, G12E3F40, 3-pole 40 A thermal-magnetic circuit breaker, 15 kA breaking capacity at 415 V AC, IP20, grey (RAL 7035).

$81.92Ref. price · indicative, final on quote
Schneider Electric G12E3F40 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

G12E3F40 — Identification
ParameterValue
Product nameGoPact MCCB 125
Product range (series)GoPact MCCB
Product/component typeCircuit breaker
Device applicationDistribution
G12E3F40 — Ratings
ParameterValue
Rated current (In)40 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
G12E3F40 — 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
G12E3F40 — Mechanical
ParameterValue
Mounting supportBackplate
Control typeToggle
G12E3F40 — 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
G12E3F40 — Approvals
ParameterValue
StandardsEN/IEC 60947-1 EN/IEC 60947-2 EN/IEC 60947-2 Annex H
G12E3F40 — Electrical
ParameterValue
[Icu] rated ultimate short-circuit breaking capacity15 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 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
G12E3F40 — Specifications
ParameterValue
[Ir] long-time protection pick-up adjustment range1 x In
Trip unit protection functionsLI

Product details

GoPact MCCB 125 — 40 A, 15 kA, 3P

The G12E3F40 is a 3-pole GoPact MCCB 125 molded case circuit breaker from Schneider Electric, rated 40 A at 40 °C with a TM-D thermal-magnetic trip unit providing LI protection (overload and short-circuit). Rated operational voltage is 415 V AC 50/60 Hz, with an insulation voltage of 440 V AC, all conforming to EN/IEC 60947-2.

Mounting and connections

Fixed-mount breaker with backplate mounting, accepts horizontal or vertical orientation flat on the back. Screw terminals on both line and load sides, front-connected, with a 25 mm connection pitch. IP20 finger-safe protection means it's suitable for enclosed distribution boards where the front face is behind a door or cover.

Mechanical durability is 30,000 cycles; electrical durability is 8,000 cycles at 415 V at rated current — that's a solid service life for a distribution breaker that sees infrequent switching.

Frequently asked questions

What is the breaking capacity of G12E3F40?

The G12E3F40 has a breaking capacity of 15 kA at 380/415 V AC, which is the E performance level for this frame size.

What compliance standards does G12E3F40 meet?

The G12E3F40 conforms to EN/IEC 60947-1, EN/IEC 60947-2, and EN/IEC 60947-2 Annex H. It is also suitable for isolation per the same standard.

MPN
G12E3F40