DC Circuit Breaker | Miniature Circuit Breakers | DC Breaker

PROFESSIONAL DC CIRCUIT BREAKER MANUFACTURER

DC circuit breakers play a critical role in protecting electrical circuits from damage caused by overcurrents or short circuits. They automatically interrupt the flow of current when it exceeds a predetermined level, preventing fires, equipment damage, and other hazards.

The DC circuit breakers we produce can effectively protect your circuit’s safety and are a very cost-effective solution. Our R&D expert team has more than 10 years of industry experience, has a comprehensive understanding of market demand, and can manufacture modular circuit breakers according to your specifications. All products have industry-recognized product certification, and the quality is guaranteed. We have five fully automated production lines for producing circuit breakers, with a monthly production capacity of 100,000 pieces, which we can deliver on time for your order. Place your bulk order today and enjoy our amazing wholesale prices that are better than the competition.

To understand why it is necessary to know by it, we must understand what is a DC circuit breaker. A circuit breaker is an automatically operated electrical switch connected to your electrical system. DC circuit breakers prevent major damage to circuits due to excessive current flow, usually caused by a system short circuit.

OUR DC BREAKER PRODUCT LINE

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OUR MAIN ADVANTAGES

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EXPERIENCE AND REPUTATION

We have accumulated a lot of experience and reputation in the industry, have a good track record, and provide high-quality products and services.

QUALITY AND COMPLIANCE

Ensure adherence to international quality standards and compliance with relevant safety regulations. There are certifications such as ISO, UL, CE, and ROHS to ensure that the products are reliable, safe, and environmentally friendly.

CUSTOMIZATION AND FLEXIBILITY

We offer custom options to meet your specific requirements. This can include custom ratings, materials, or configurations. Flexibility in order quantities, lead times, and shipping options to align with your business operations.

INNOVATIVE DESIGN

We have a strong R&D department focused on developing innovative and efficient circuit breaker designs. This ensures that products are always kept up-to-date with the latest technological advancements and industry standards.

RIGOROUS TESTING AND QUALITY CONTROL

We have a robust quality control process. This includes rigorous testing at all stages of production to ensure the final product meets or exceeds industry standards, including dielectric withstand testing, short circuit testing, and mechanical durability testing, among others.

AFTER-SALES SUPPORT

We provide comprehensive after-sales support, including technical assistance, troubleshooting, and warranty service. Ensuring customer satisfaction also demonstrates our commitment to the reliability and performance of their products.

Common Queries

Frequently Asked Questions

You'll find answers about our products. If your question is not answered below,
please feel free to contact us.

What are the main functions of DC Breaker?

The main function of the DC breaker is to automatically interrupt the current flow when it exceeds a predetermined level, thereby protecting the circuit from damage caused by overcurrent or short circuits.

What certifications have Moreday’s DC MCCB received?

Moreday’s DC MCCB has passed ISO, CE, ROHS,TUV and other certifications to ensure that the products are reliable, safe, and environmentally friendly. You can purchase with confidence, we have a professional team to serve you.

In which industries are DC current breakers mainly used?

DC current breakers are commonly used in renewable energy systems, electric vehicles, data centers, railway traction systems, and industrial automation control systems.

Why choose Moreday’s DC circuit breakers?

Because we have high-quality products, access to the latest technology, provide the best customization service options, excellent after-sales support, and comply with international quality standards and safety regulations, our customers can buy with confidence.

Why does the DC circuit breaker trip?

If the dc circuit breakers trip frequently, you can solve the problem by following these steps:

Check circuit loading: Make sure the total wattage of all equipment connected to this circuit breaker does not exceed the rated capacity of the circuit breaker. If it exceeds, try reducing the load, such as unplugging some equipment or moving them to other circuits.

Check wiring: Check that all wiring is secure and shows no signs of damage or wear. Incorrect or aged wiring can cause a short circuit or poor contact, causing the circuit breaker to trip.

Detect short circuits or ground faults: Use a multimeter to check for short circuits or ground faults. This type of problem requires a professional electrician to diagnose and repair it.

Replace the circuit breaker: If none of the above steps resolves the problem, you may want to consider replacing the circuit breaker itself.

Consult a professional electrician: If you’re not sure how to fix the problem yourself, or the problem is complex and requires specialized skills, it’s best to contact a qualified electrician for inspection and repairs.

Make sure to turn off the power source when handling any electrical safety equipment.

How to prevent the loose wire problem of Miniature Circuit Breakers?

Preventing the problem of loose Miniature Circuit Breakers wires can be achieved through the following methods:

Proper installation: Make sure you follow the manufacturer’s instructions when installing, use the correct tools and techniques, and make sure all connections are tight and correctly placed.

Regular Inspections: Perform regular visual inspections to check all wiring for signs of looseness, wear, or corrosion. This inspection should include an inspection of terminal blocks and contact points.

Use the Proper Torque: Use a torque wrench when wiring to ensure the terminal blocks are at the recommended torque setting, this will prevent over-tightening or loosening.

Anti-vibration measures: Circuit breakers operating in a vibrating environment should adopt additional anti-vibration measures, such as locking washers or spring washers, to reduce looseness caused by vibration.

Environmental considerations: Make sure the DC MCB and its wiring are suitable for its operating environment and avoid extreme temperatures and humidity, which can cause materials to expand or contract, affecting the tightness of connections.

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