CB-125A Moulded Case Circuit Breaker

CB-125A-MCCB-4P

CB-125A-MCCB-4P Front

CB-125A-MCCB-3P

CB-125A-MCCB-3P Front

CB-125A-MCCB-2P

CB-125A-MCCB-2P Front

CB-125A-MCCB-1P

CB-125A-MCCB-1P Front

CB-125A-MCCB-4P

CB-125A-MCCB-4P Front

CB-125A-MCCB-3P

CB-125A-MCCB-3P Front

CB-125A-MCCB-2P

CB-125A-MCCB-2P Front

CB-125A-MCCB-1P

CB-125A-MCCB-1P Front

CB-125A Moulded Case Circuit Breaker

The CHINT CB-125A Moulded Case Circuit Breaker (MCCB) offers reliable overload and short-circuit protection for AC circuits up to 415 V and 125 A. Designed with thermomagnetic trip technology, it delivers precise fault interruption and dependable performance in demanding power distribution systems. With a 6 kA breaking capacity, robust structure, and plug-in installation, the CB-125A ensures safe, efficient operation in industrial, commercial, and infrastructure applications. Fully compliant with IEC/EN 60947-2 standards and certified by CE and TÜV.

Product Information

Standard: IEC/EN 60947-2
Certifications: CE, TÜV
Rated Current (In): 80 A / 100 A / 125 A
Rated Operating Voltage (Ue):
- 2P — AC 230/240 V
- 3P / 3P+N / 4P — AC 400/415 V
Rated Insulation Voltage (Ui): 500 V
Rated Impulse Withstand Voltage (Uimp): 6 kV
Rated Frequency: 50/60 Hz
Trip Unit Type: Thermomagnetic
Instantaneous Trip Current: 8 × In ± 20 %
Rated Short-Circuit Breaking Capacity (Icn): 6 kA
Rated Service Short-Circuit Capacity (Ics): 6 kA
Mechanical Life: 10,000 operations
Electrical Life: 4,000 operations
Connection: Top or bottom feed (cable or busbar compatible)
Conductor Range: 10–35 mm²
Tightening Torque: 2.0 N·m
Wire Insertion Depth: 25 mm
Mounting Type: Plug-in installation
Operating Temperature: −40 °C to +70 °C
Altitude: ≤ 2,000 m
Pollution Degree: 3
Protection Degree: IP20 (direct) / IP40 (when installed in enclosure)
Application Areas: Industrial control panels, power distribution boards, and motor protection systems

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CB-125A-MCCB-Catalog.pdf

191.78KB

2025-12-16

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2410-CB-125A-MCCB-Manual.pdf

2.59MB

2025-08-08

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2412-CB-125A-MCCB-REACH Declaration.pdf

366.32KB

2025-01-17

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2205-CB-125A-MCCB-TUV Certificate.pdf

1.28MB

2025-01-17

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2201-CB-125A-MCCB-CE RoHS Declaration.pdf

818.53KB

2025-01-17

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2007-CB-125A-MCCB-CE Certificate.pdf

93.31KB

2025-01-17

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1607-CB-125A-MCCB-CB Certificate.pdf

310.02KB

2025-01-17

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CB-125A-MCCB-Drawing-1P-2D.dwg

213.88KB

2025-08-08

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CB-125A-MCCB-Drawing-1P-3D.STP

5.99MB

2025-08-08

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CB-125A-MCCB-Drawing-2P-2D.dwg

250.05KB

2025-08-08

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CB-125A-MCCB-Drawing-2P-3D.STP

12.34MB

2025-08-08

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CB-125A-MCCB-Drawing-3P-2D.dwg

273.99KB

2025-08-08

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CB-125A-MCCB-Drawing-3P-3D.STP

17.3MB

2025-08-08

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CB-125A-MCCB-Drawing-4P-2D.dwg

297.14KB

2025-08-08

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CB-125A-MCCB-Drawing-4P-3D.STP

22.45MB

2025-08-08

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FAQs

What is the primary function of the CB-125A MCCB?

It provides overload and short-circuit protection for AC circuits up to 125 A, ensuring electrical system safety and operational reliability.

What tripping mechanism does it use?

The CB-125A features a thermomagnetic trip unit, offering quick and accurate response to overloads and short circuits.

What are its breaking and service capacities?

It provides both Icn and Ics at 6 kA, ensuring reliable fault interruption in standard low-voltage networks.

What installation options does it support?

It supports plug-in installation with top or bottom feed, allowing easy connection using either cables or busbars.

What environments is it suitable for?

The CB-125A MCCB operates effectively between −40 °C and +70 °C, up to 2,000 m altitude, and complies with IP20/IP40 protection levels.