Description

Schneider G12T3A16 | Circuit breaker, GoPact MCCB 125, 3 poles, 10kA at 415VAC, 16A rating, TMD trip unit, adjustable thermal protection

1. Technical Specifications G12T3A16

  1. Product Name:
    Molded Case Circuit Breaker (MCCB)

  2. Model Number:
    G12T3A16

  3. Product Series:
    GoPact MCCB 125 by Schneider Electric

  4. Rated Current (In):
    16 Amperes

  5. Number of Poles:
    3 poles – designed for three-phase electrical systems

  6. Breaking Capacity:
    10 kiloamperes (kA) at 415 volts AC

  7. Rated Operational Voltage (Ue):
    Up to 415 VAC at 50/60 Hz

  8. Trip Unit Type:
    TMD (Thermal Magnetic Trip Unit)

  9. Thermal Protection:
    Adjustable thermal setting – allows fine-tuning of overload protection

  10. Magnetic Protection:
    Fixed magnetic setting for reliable short-circuit protection

  11. Mounting Type:
    Fixed – mounted directly into distribution boards or panel enclosures

  12. Connection Type:
    Compatible with cable or busbar connections

  13. Insulation Voltage (Ui):
    690 V

  14. Standards and Approvals:

  • IEC 60947-2

  • CE Marked

  • RoHS Compliant

  1. Operating Temperature Range:
    Typically from -25°C to +70°C (with possible derating at higher temperatures)

  2. Pollution Degree:
    3 – industrial environment rating

2. Key Features G12T3A16

  1. Precise Overload Protection:
    Adjustable thermal settings offer tailored protection for sensitive or small-scale loads.

  2. Short-Circuit Protection:
    Fixed magnetic trip ensures quick disconnection in the event of a fault, reducing equipment damage.

  3. Compact and Durable:
    Rugged construction in a space-saving format suitable for small panel compartments.

  4. Optimized for Low Current Loads:
    Ideal for branch circuits, control panels, or equipment with lower current requirements.

  5. Easy Installation:
    Fixed mounting with front-access terminals ensures efficient setup and maintenance.

  6. Compatible Accessories:
    Fully compatible with GoPact accessories, such as rotary handles, terminal covers, and auxiliary modules.

  7. High Electrical Endurance:
    Designed for long-lasting reliability with a high number of operating cycles.

  8. Clear Status Indicators:
    On/off/tripped positions easily visible to enhance operational clarity and safety.

  9. International Compliance:
    Conforms to international standards for electrical protection in industrial and commercial systems.

  10. Eco-Friendly Design:
    RoHS-compliant construction with reduced environmental impact.

3. Common Applications G12T3A16

  1. Control Panel Protection:
    Safeguards low-current control circuits in automation and instrumentation systems.

  2. Lighting Circuits:
    Ideal for protecting lighting sub-circuits in commercial or industrial buildings.

  3. HVAC Systems:
    Used for overload and short-circuit protection in small compressors or fans.

  4. Renewable Energy Systems:
    Provides protection in small-scale solar or wind generation panels.

  5. Small Motors and Pumps:
    Suitable for motor circuits with lower current demands in OEM and industrial applications.

  6. Sub-Distribution Boards:
    Protects branch circuits in commercial and residential distribution panels.

  7. Elevator and Lift Systems:
    Used in low-power sections of control circuits for elevators and automated lifting systems.

  8. Laboratory and Test Equipment Panels:
    Safeguards delicate equipment requiring precise and dependable current limitation.

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 16 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 16 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 320 A
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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