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DC MCB 125A MDB1Z-125

MOREDAY MDB1Z-125 DC miniature circuit breaker 1000V 125A 1P 2P 3P 4P DC mcb CE certified.

  • Up to 1000V 125A DC application
  • According to IEC 60947-2
  • High current frame structure
  • Din rail installation
  • 1P/2P/3P/4P

Stable Delvery Time

Technical Support

2 Years

MDB1Z-125 DC Miniature Circuit Breaker

MDB1Z-125 DC Miniature Circuit Breaker

The Moreday MDB1Z-125 1DC Miniature Circuit Breaker (MCB)  is designed to provide reliable protection for your direct current (DC) systems. With robust construction and exceptional performance, this DC MCB 125A ensures that your electrical equipment is safeguarded against overloads and short circuits.

Key Features and Advantages

DC MCB 125A Exceptional Breaking Capacity

With a short-circuit breaking capacity of up to 15kA, the MDB1Z-125 DC MCB 125A offers superior protection.

Wide Rated Current Range

Available in multiple ratings (63A, 80A, 100A,125A) to accommodate diverse application needs.

Precision Tripping Characteristics

DC MCB 125A’s thermal magnetic tripping mechanism ensures precise protection.

High-Endurance Design

 With over 10,000 cycles of mechanical life, this DC MCB 125A is built for longevity.

International Certification

Certified with CE, CB, and other international standards, ensuring quality and reliability.

Circuit Breaker Switch Demonstration



Solar Energy Systems: Provides protection for solar panel arrays and DC combiners.

Electric Vehicles: Protects electrical systems in electric vehicle charging stations.

Telecommunications: Safeguards equipment in DC-powered telecom systems.

Industrial Control Systems: Offers reliable protection for DC-powered machinery and equipment.

Why Choose Moreday?

Commitment to Quality

Moreday is an ISO9001-certified manufacturer with a focus on delivering top-quality products.

Technological Innovation

With over 30 national patents, Moreday is a leader in developing innovative solutions.

Customer-Centered Approach

Moreday provides tailor-made services to meet specific customer needs.

Global Reach

Moreday products are trusted worldwide, exported to over 100 countries.






Rated Working Voltage Ue

600V DC/1000V DC 

Rated Current In

63A, 80A,100A,125A

Rated Insulation Voltage Ui


Rated Impulse Withstand Voltage Uimp


Tripping Characteristics


Tripping Type

Thermal Magnetic

Rated Ultimate Short-Circuit Breaking Capacity Icu


Rated Service Short-Circuit Interrupting Capacity Ics


Electrical Life

> 1500 Cycles

Mechanical Life

>10000 Cycles

Overvoltage Category


Pollution Degree


Ingress Protection

IP40; Wiring port IP20

Resistance to humidity and heat

Class 2

Relative Humidity

≤ 95 %


acc. to IEC60068-2-6


acc. to IEC60068-2-27

Terminal capacity


Fastening Torque of Terminals

2.0~3.5 Nm

Ambient Temperature


Storage Temperature


Installation Method




popular questions


1.What is the MDB1Z-125 DC MCB designed for?

The MDB1Z-125 is designed for safeguarding DC electrical systems, offering protection against overloads and short circuits. It is ideal for applications like solar power systems and industrial equipment.

2. How does the MDB1Z-125 enhance safety?

This DC MCB enhances safety by providing quick disconnection during faults, preventing damage to equipment and electrical systems. It also complies with international safety standards, ensuring reliability.

3. Is the MDB1Z-125 suitable for solar power systems?

Yes, the MDB1Z-125 is highly suitable for solar power systems. Its robust design and reliable protection make it ideal for photovoltaic installations and similar applications.

4. Does the MDB1Z-125 meet safety certifications?

The MDB1Z-125 meets essential safety certifications like CE and TUV, which ensures that it adheres to international standards for quality and safety.

5. What current rating does the MDB1Z-125 handle?

The MDB1Z-125 is rated at 125A, making it capable of handling high direct current loads for heavy-duty applications.

6. Can the MDB1Z-125 be used for electric vehicle charging stations?

Yes, the MDB1Z-125 is suitable for use in electric vehicle charging stations, where secure current management and reliable protection are crucial.

7. What type of protection does the MDB1Z-125 offer?

The MDB1Z-125 offers protection against both overloads and short circuits, providing comprehensive safeguarding for DC electrical systems.

8. How durable is the MDB1Z-125?

The MDB1Z-125 is constructed with robust materials to endure harsh environments, making it highly durable and suitable for industrial and outdoor applications.

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