Miniature Circuit Breaker

Are you still using the old-fashioned knife switch? When a circuit short-circuits or is overloaded, it cannot automatically disconnect and can only watch helplessly as the wires get hot, the insulation melts, and even cause a fire. At the ends of homes, offices, or factories, this "unprotected" state is a huge safety hazard.

Junray Electrical's Miniature Circuit Breaker was specifically designed to address this issue. It replaces the traditional knife switch and acts as the "smart sentinel" of the circuit. Once it detects an abnormal current (such as overload or short circuit), it will automatically trip in an extremely short time, cutting off the power supply. This not only protects expensive electrical equipment but also prevents circuit burnout and electric shock accidents, building a solid defense line for your and your family's safety.

Precise protection and ultra-compact design

The core competitiveness of Miniature Circuit Breaker lies in its precise tripping characteristics and modular design:

Dual protection mechanism: Built-in thermal tripping and magnetic tripping components. The thermal tripping is responsible for dealing with long-term overloads to prevent line overheating; the magnetic tripping is responsible for dealing with instantaneous short circuits and quickly cutting off the fault. The combination of the two ensures comprehensive line safety.

Ultra-compact, saving space: Designed specifically for terminal power distribution, it is very small in size. It can be easily installed in standard PZ30 distribution boxes, occupying very little space, allowing you to arrange more circuits in the limited distribution box and perfectly solve the problem of crowded space.

Highly cost-effective: Compared to expensive plastic shell circuit breakers, the price of the small circuit breaker is highly advantageous. For terminal line protection, it provides just the right performance, allowing you to obtain industrial-grade safety protection without spending a large amount of money, significantly reducing project costs.

Junray Electrical's Quality Assurance

As a professional Manufacturer with profound technical expertise, Junray Electrical strictly adheres to the national standards for small circuit breakers in its production. Our factory is equipped with advanced automated assembly lines and testing laboratories, ensuring that every product can withstand rigorous tests.

This Miniature Circuit Breaker features a reliable operating mechanism, with distinct opening and closing sensations. It has an extremely low failure rate. Each circuit breaker undergoes strict power-on debugging, opening and closing tests, and protection characteristic tests before leaving the factory, ensuring its stability and reliability even under a 6kA to 10kA breaking capacity. Whether it is frequent operation or sudden failures, it can handle them calmly and provide you with lasting safety assurance.

Technical Specifications 

Applicable scenarios:

Household power distribution: Protection for lighting and socket circuits to prevent household appliances from overheating.

Office / Community: Circuits for air conditioners and office equipment to ensure daily electricity supply.

Factory terminals: Protection for small equipment and control circuits to stabilize production.

Why choose Junray Electrical?

Choosing Junray Electrical is not merely choosing a Supplier; it is choosing a reliable safety partner. We have a professional team of 50 people, including 5 full-time quotation engineers, who can provide you with fast and precise customized services.

We promise to offer global rapid response 7×24 hours. If you are looking for a Miniature Circuit Breaker that can protect terminal lines and comply with safety standards, don't hesitate any longer. Contact us immediately to get free technical consultation and quotations, and let Junray Electrical build a safe, stable, and efficient power distribution system for you.

FAQ

Question: What are the differences between miniature circuit breakers and plastic-case circuit breakers?

Answer: The main differences lie in size and application scenarios. The miniature circuit breaker is smaller in size and is suitable for installation on the distribution box rails. It is mainly used for protecting terminal lines (such as household lighting and sockets), and is cheaper in price. While the plastic-case circuit breaker is larger in size and is mainly used for protecting main lines. For terminal protection, using a miniature circuit breaker is the most economical and reasonable choice.

Question: Can this circuit breaker be customized?

Answer: Yes, it can. We can customize the rated current (6A - 63A), the breaking capacity (6kA - 10kA), and the pole number (1P - 4P) according to your specific requirements, to perfectly meet your terminal line protection needs.

Question: Is installing this circuit breaker complicated?

Answer: We adopt a standardized rail installation design. Just insert it into the standard rail of the distribution box and connect the incoming and outgoing lines. No complex tools are needed, which significantly shortens the construction time.