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Schneider Electric G12E3A40 — Miniature Circuit Breakers (MCB)

Schneider Electric G12E3A40 GoPact MCCB 125, 40 A, 3P, TM-D

MPNG12E3A40
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Schneider Electric GoPact MCCB 125, G12E3A40, 3-pole, 40 A at 40 °C, TM-D thermal-magnetic trip unit, 15 kA at 415 V AC, grey (RAL 7035).

$86.24Ref. price · indicative, final on quote
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

G12E3A40 — Identification
ParameterValue
Product nameGoPact MCCB 125
Product range (series)GoPact MCCB
Product/component typeCircuit breaker
Device applicationDistribution
G12E3A40 — 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
G12E3A40 — 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
G12E3A40 — Mechanical
ParameterValue
Mounting supportBackplate
Control typeToggle
G12E3A40 — 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
G12E3A40 — Approvals
ParameterValue
StandardsEN/IEC 60947-1 EN/IEC 60947-2 EN/IEC 60947-2 Annex H
G12E3A40 — 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
G12E3A40 — Specifications
ParameterValue
[Ir] long-time protection pick-up adjustment range0.8...1 x In
Trip unit protection functionsLI

Product details

The Schneider Electric G12E3A40 is a GoPact MCCB 125 molded case circuit breaker, 3-pole, rated 40 A at 40 °C with a TM-D thermal-magnetic trip unit providing LI (overload and short-circuit) protection. It is rated for 15 kA breaking capacity at 415 V AC 50/60 Hz, conforming to EN/IEC 60947-2, and is suitable for isolation per that standard. The grey (RAL 7035) enclosure carries an IP20 degree of protection, meaning it is finger-safe but not sealed against moisture — intended for installation inside a distribution panel or enclosure, not in a washdown environment.

This is a standard distribution breaker, not a motor-protective device — it does not have adjustable magnetic pickup or phase-loss sensitivity.

Fixed mounting via backplate, with screw terminals on both line and load sides — front connection on both ends. The 25 mm connection pitch matches standard busbar systems. Dimensions: 75 mm wide, 130 mm high, 60 mm deep.

Frequently asked questions

How do I get current pricing and availability for G12E3A40?

The G12E3A40 is sourced to order against an RFQ. Submit a request for current pricing and availability — confirmed at quote time.

What is G12E3A40's listed colour?

The G12E3A40 is grey, RAL 7035.

What is G12E3A40's depth?

The depth is 60 mm.

What compliance documentation does this brand provide for G12E3A40?

The G12E3A40 conforms to EN/IEC 60947-1, EN/IEC 60947-2, and EN/IEC 60947-2 Annex H. It is suitable for isolation per EN/IEC 60947-2.

MPN
G12E3A40