Description

Schneider G12F3A40 | Circuit breaker, GoPact MCCB 125, 3 poles, 30kA at 415VAC, 40A rating, TMD trip unit, adjustable thermal protection

Technical Specifications G12F3A40

  • Product Name: Schneider Electric G12F3A40

  • Product Type: Molded Case Circuit Breaker (MCCB)

  • Series: GoPact MCCB 125

  • Number of Poles: 3 poles

  • Rated Current (In): 40 Amps

  • Frame Size: 125 A

  • Rated Operational Voltage (Ue): Up to 415 VAC

  • Breaking Capacity (Icu): 30 kA at 415 VAC

  • Trip Unit Type: TMD (Thermal Magnetic Trip Unit)

  • Thermal Protection: Adjustable — for precise overload settings

  • Magnetic Protection: Fixed — fast short-circuit response

  • Frequency: 50/60 Hz

  • Mounting Type: Fixed mounting for panel integration

  • Standards Compliance: IEC 60947-2

  • Utilization Category: AC-22A — suitable for resistive and inductive loads

Key Features

  • Accurate 40A Circuit Protection
    Designed to safeguard circuits requiring up to 40 amps, combining precise overload protection with high fault current handling.

  • High Breaking Capacity of 30 kA
    Capable of interrupting high short-circuit currents, ensuring safety and system integrity under fault conditions.

  • Adjustable Thermal Trip
    Customizable overload protection settings enhance coordination with other protective devices and reduce nuisance trips.

  • Fixed Magnetic Trip
    Provides instantaneous protection against short circuits to protect equipment and personnel.

  • Compact and Easy to Install
    Fits into standard electrical panels with front-access terminals, simplifying installation and maintenance.

  • Durable and Reliable
    Built for consistent performance in demanding commercial and industrial environments.

Applications

  • Commercial Power Distribution
    Ideal for lighting systems, receptacles, and medium-sized HVAC units in offices, retail centers, and institutions.

  • Industrial Automation and Control
    Protects motors, pumps, and auxiliary control circuits in manufacturing plants.

  • Renewable Energy Installations
    Suitable for medium-capacity solar and wind power circuits.

  • Data Centers and Critical Facilities
    Provides reliable circuit protection for sensitive equipment and emergency power circuits.

  • Backup Power Systems
    Used in circuits fed from UPS units and standby generators requiring 40A protection.

  • Public Infrastructure
    Suitable for schools, hospitals, government buildings, and other institutional facilities.

Additional information

brands

Schneider Electric

Specifications

Main
Range of product GoPact MCCB
product or component type Circuit breaker
Product name GoPact MCCB 125
Device application Distribution
poles description 3P
Protected poles description 3D
[In] rated current 40 A at 40 °C
[Ue] rated operational voltage 415 V AC 50/60 Hz conforming to EN/IEC 60947-2
Suitability for isolation Yes conforming to EN/IEC 60947-2
Utilisation category Category A
[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
Performance level F 30 kA 380/415 V AC
Trip unit name TM-D
Trip unit technology Thermal-magnetic
Trip unit protection functions LI
Control type Toggle
Circuit breaker mounting mode Fixed
Complementary
[Ui] rated insulation voltage 440 V AC conforming to EN/IEC 60947-2
[Uimp] rated impulse withstand voltage 6 kV 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
Mechanical durability 30000 cycles
Electrical durability 8000 cycles at 415 V In
Power dissipation per pole 18.7 W
mounting support Backplate
Mounting position Horizontal and vertical Flat on the back
Upside connection Front
downside connection Front
Connection terminals Screw terminals
Connection pitch 25 mm
Protection type L : for overload protection (thermal) I : for short-circuit protection (magnetic)
Trip unit rating 40 A at 40 °C
Long-time pick-up adjustment type Ir (thermal protection) Adjustable
[Ir] long-time protection pick-up adjustment range 0.8...1 x In
Long-time protection delay adjustment type tr Fixed
Instantaneous protection pick-up adjustment type Ii Fixed
[Ii] instantaneous protection pick-up adjustment range 10 x In
Width (W) 75 mm
Height (H) 130 mm
Depth (D) 60 mm
net weight 0.7 kg
Colour Grey (RAL 7035)
Environment
Standards EN/IEC 60947-1 EN/IEC 60947-2 EN/IEC 60947-2 Annex H
Overvoltage category III
Pollution degree 3 conforming to IEC 60664-1
IP degree of protection IP20 conforming to IEC 60529
Ambient air temperature for operation -20…55 °C
ambient air temperature for storage -35…85 °C
Operating altitude 0...2000 m without derating 2000...5000 m with derating
Packing Units
Unit Type of Package 1 PCE
Number of Units in Package 1 1
Package 1 Height 12.4 cm
Package 1 Width 8.5 cm
Package 1 Length 13.9 cm
Package 1 Weight 908 g
Unit Type of Package 2 S02
Number of Units in Package 2 8
Package 2 Height 15 cm
Package 2 Width 30 cm
Package 2 Length 40 cm
Package 2 Weight 7.579 kg
Unit Type of Package 3 P06
Number of Units in Package 3 128
Package 3 Height 75 cm
Package 3 Width 60 cm
Package 3 Length 80 cm
Package 3 Weight 129.764 kg

Main Document

Main Document

Data Sheet : G12F3A40 

Main Document

Data Sheet : G12F3A40 

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