Description

Schneider G12T3A63 | Circuit breaker, GoPact MCCB 125, 3 poles, 10kA at 415VAC, 63A rating, TMD trip unit, adjustable thermal protection

Specifications of G12T3A63 

The GoPact MCCB 125 is a molded case circuit breaker (MCCB) designed to protect electrical circuits from overloads and short circuits. It is a reliable and robust solution suitable for various industrial, commercial, and residential applications. Below are the key specifications:

  • Product Type: Molded Case Circuit Breaker (MCCB)

  • Product Name: GoPact MCCB 125

  • Rated Current: 63 Amperes (A)

  • Number of Poles: 3 Poles (Three-phase system)

  • Rated Operational Voltage: 415 Volts AC

  • Breaking Capacity: 10 kA (kiloamperes) at 415V AC

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

    • Thermal Protection: Adjustable to prevent overload damage

    • Magnetic Protection: Instantaneous trip response to short circuits

This model complies with international electrical standards and is designed for safe and efficient current interruption in medium to high-demand systems.

. Features of G12T3A63 

The GoPact MCCB 125 offers a wide range of technical and operational features, making it a preferred choice in many electrical installations:

  1. High Protection Reliability
    It offers precise and dependable protection against overload and short-circuit faults, significantly reducing the risk of fire or equipment damage.

  2. Adjustable Thermal Protection
    The thermal setting can be adjusted to suit different types of electrical loads, offering flexibility for varying operational needs.

  3. Rugged Construction
    Built from durable, heat-resistant materials, the breaker is capable of operating in harsh industrial environments without degradation in performance.

  4. Fast Fault Detection and Response
    The magnetic trip mechanism detects short circuits and disconnects power instantly to prevent further damage to connected equipment.

  5. Compact and Space-Saving Design
    The breaker is designed to fit easily into standard distribution panels, optimizing space without compromising performance.

  6. Ease of Installation and Maintenance
    Designed for quick installation and simple maintenance, it reduces downtime and service efforts during regular checks.

  7. Long Operational Life
    Engineered for durability and long-term usage, the GoPact MCCB 125 requires fewer replacements, reducing operating costs over time.

  8. Wide Operating Temperature Tolerance
    It performs reliably across a wide range of temperatures, making it suitable for both indoor and outdoor installations.

  9. High Safety Standards
    Provides personal and equipment safety by instantly isolating faulted circuits and minimizing risks in electrical systems.

. Applications of 

Thanks to its versatility and performance capabilities, the GoPact MCCB 125 is ideal for use in a broad range of applications, including:

  1. Industrial Facilities
    Suitable for protecting machinery, motors, control panels, and production lines against electrical faults and overload conditions.

  2. Commercial Buildings
    Commonly installed in shopping malls, office buildings, hotels, and hospitals to protect lighting circuits, HVAC systems, elevators, and backup systems.

  3. Large Residential Complexes
    Ideal for villas, apartment buildings, or residential compounds where reliable protection and circuit control are essential.

  4. Renewable Energy Systems
    Used in solar power systems and other renewable energy installations to protect against overcurrent or backfeed faults.

  5. Generators and Backup Power Systems
    Ensures safe connection and disconnection of power during switching between the grid and generator sources.

  6. Data Centers and Critical Infrastructure
    Installed in power distribution units (PDUs) to safeguard sensitive equipment and guarantee uninterrupted power supply.

  7. Main and Sub Distribution Boards
    Acts as the main or feeder circuit breaker in low-voltage distribution boards to control and protect downstream circuits.

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 63 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 10 kA Icu at 380/415 V AC 50/60 Hz conforming to EN/IEC 60947-2 20 kA Icu at 220/230 V AC 50/60 Hz conforming to EN/IEC 60947-2
Performance level T 10 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 10 kA at 380/415 V AC 50/60 Hz conforming to EN/IEC 60947-2 20 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 63 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 : Download

Main Document

Data Sheet : Download

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