Zone industrielle WengYang Yueqing Wenzhou 325000
Heures de travail
Du lundi au vendredi : de 7h00 à 19h00
Le week-end : 10H00 - 17H00
Zone industrielle WengYang Yueqing Wenzhou 325000
Heures de travail
Du lundi au vendredi : de 7h00 à 19h00
Le week-end : 10H00 - 17H00


In the wave of global energy transformation, renewable energy represented by photovoltaic power generation is accelerating its popularization and application worldwide, and the demand for safe, stable and standardized electrical supporting equipment is rising sharply. As a key component of circuit safety protection, miniature circuit breakers (MCB) bear the important responsibility of preventing circuit overload, short circuit and electrical faults, which is related to the stable operation of the entire power system and the safety of equipment and personnel. For global engineering contractors, equipment distributors, photovoltaic project developers and electrical installers, choosing a high-performance, fully specified and widely adaptable MCB product is the top priority to ensure project quality and long-term stable operation.
2.CNKUANGYA, focusing on the R&D and manufacturing of new energy electrical protection and low-voltage power distribution equipment, has launched a brand-new miniature circuit breaker, aiming to provide reliable circuit protection solutions for global photovoltaic systems, industrial and commercial power distribution, and residential electrical scenarios. This product strictly abides by international electrical safety specifications, covers complete parameter configurations, and has excellent durability and environmental adaptability, fully meeting the diversified application needs of overseas markets. It not only meets the protection requirements of conventional AC circuits, but also adapts to the special working conditions of DC circuits in photovoltaic systems, becoming a high-quality supporting component for global clean energy projects and power distribution engineering.
This newly launched CNKUANGYA miniature circuit breaker adheres to the brand’s consistent high-quality standards, integrating safety, versatility and durability, and stands out in the global electrical accessories market. Different from ordinary MCB products, this model is designed for long-term operation in various working conditions, with reasonable structure, convenient installation and stable tripping performance, and has passed strict performance tests to meet the access standards of major overseas markets. With complete pole combinations, wide current range, dual breaking capacity options and standardized tripping curves, it can be matched with different circuits and loads flexibly, truly realizing one product for multi-scenario application and reducing the cost of model selection and inventory for global customers.
In terms of safety compliance, the product fully complies with IEC 60947-2 international standards and meets mainstream certification requirements in overseas markets, ensuring smooth customs clearance and project acceptance in various regions. In terms of structural design, it adopts a compact and sturdy shell, with good heat resistance and pressure resistance, adapting to different climatic environments around the world. Whether it is a high-temperature and humid area, a dry and cold region, or an industrial site with certain dust interference, this MCB can maintain stable performance and avoid frequent failures and maintenance troubles. For global customers, this means lower later operation and maintenance costs and longer service life, bringing more secure and efficient circuit protection for various projects.

The CNKUANGYA miniature circuit breaker has a detailed and comprehensive parameter system, covering all conventional specifications on the global market, and each parameter is tailored to actual application needs, ensuring precise matching with circuits and loads. The following is a detailed breakdown of core parameters and applicable scenario analysis, which is convenient for global customers to select models accurately.
1. Pole, Rated Voltage and Application Matching
The pole number and rated voltage of the circuit breaker are the core basis for model selection, which directly determine the applicable circuit type and voltage environment. This product provides four pole options, with targeted rated voltage configuration, covering low-voltage AC and DC circuits commonly used globally.
| Pôles | Tension nominale | Typical Overseas Application Scenarios |
| 1P | 250V | Single-phase residential lighting circuits, small electrical appliance branches, office small-power circuits |
| 2P | 600V | Small commercial power circuits, photovoltaic DC branch circuits, single-phase equipment main protection |
| 3P | 750V | Three-phase industrial small-power equipment, commercial air conditioning circuits, medium-scale PV systems |
| 4P | 1000V | Large industrial three-phase circuits, high-power photovoltaic grid-connected systems, industrial power distribution main circuits |
From the data, it can be seen that the voltage configuration of this product is highly targeted, especially the high-voltage DC specifications suitable for photovoltaic systems, which fills the demand for dedicated protection components for PV circuits. The 4P 1000V specification can meet the access requirements of large-scale photovoltaic power stations, which is highly compatible with the development trend of global clean energy.

2. Rated Current and Breaking Capacity Selection
Rated current determines the load bearing capacity of the circuit breaker, and breaking capacity reflects the ability to quickly cut off fault current. The two parameters are matched reasonably to ensure that the circuit is protected accurately without misoperation or failure to trip.
| Plage de courant nominal | Breaking Capacity Options | Load Adaptation |
| 10A-63A | 6kA, 10kA | Household appliances, office equipment, industrial machinery, PV inverters, power distribution loads |
The rated current of 10A-63A covers all conventional low-voltage circuit current demands, and customers can select the appropriate current specification according to the actual power of the load. The dual breaking capacity of 6kA and 10kA can meet the needs of different risk levels of circuits: 6kA is suitable for conventional residential and commercial scenes with stable power grid, and 10kA is suitable for industrial sites and photovoltaic systems with complex power grid and large fault current risks, ensuring rapid and effective fault removal within milliseconds.
3. Tripping Curve, Durability and Protection Grade

The tripping curve determines the starting sensitivity of the circuit breaker, durability reflects the service life, and the protection grade ensures the safety of use and the stability of internal components.
| Parameter Item | Specific Value | Performance Interpretation |
| Curve Code | B, C | B curve for small inrush current loads; C curve for equipment with certain starting inrush current |
| Mechanical Durability | 10,000 cycles | Stable switching performance after repeated manual operations |
| Electrical Durability | 2 000 cycles | Reliable tripping performance under frequent load changes and fault actions |
| Degré de protection | IP40; Wiring port IP20 | Prevent solid foreign matter intrusion, avoid electric shock at wiring terminals |
The B and C dual curves make the product applicable to more scenarios: B curve is suitable for lighting and electronic equipment with stable load, and C curve is suitable for motors, inverters and other equipment with instantaneous starting current, effectively avoiding misoperation. The mechanical durability of 10,000 times and electrical durability of 2,000 times ensure the long-term stable operation of the product, and the IP40 and IP20 dual protection grades comply with UL international safety certification requirements, fully guaranteeing the safety of operators and equipment.
Wide Application Scenarios for Global Overseas Markets
CNKUANGYA miniature circuit breaker is a universal electrical protection component for global markets, with no regional restrictions, and can be widely used in various fields such as photovoltaic power generation, industrial and mining manufacturing, commercial real estate and residential construction. In the global photovoltaic market, this product is suitable for distributed rooftop PV, large-scale ground power stations, industrial park PV and other projects, providing reliable protection for DC and AC circuits of photovoltaic systems.
In industrial and commercial power distribution, it can be used for factory power distribution cabinets, commercial building power systems, office building circuit transformation and other projects to protect various electrical equipment. In residential applications, it is suitable for residential housing, apartments and other low-voltage circuit protection, replacing traditional fragile fuses to improve the safety of household electricity. In addition, the product can also be used in outdoor power distribution boxes, communication base station power systems and other scenarios, adapting to different climatic environments and working conditions around the world, with strong stability and compatibility.
For overseas customers, CNKUANGYA miniature circuit breaker has obvious competitive advantages. First of all, the product has complete specifications, covering all conventional parameters required by the global market, and one-stop procurement can meet various matching needs, reducing procurement costs and inventory pressure. Secondly, strict compliance with international standards ensures that the product can pass the certification and acceptance of various countries smoothly, and there is no obstacle to market access.
In terms of quality, the product has undergone strict factory testing, with stable performance and long service life, reducing the frequency of replacement and maintenance. In addition, CNKUANGYA provides professional technical support and after-sales service for global customers, responding to inquiries and demands in a timely manner, and providing supporting solutions for different projects. Whether it is a small distributor or a large engineering contractor, it can get satisfactory supporting services and reliable product guarantee.
Against the background of the continuous deepening of global energy transformation, the demand for high-quality electrical protection equipment will continue to grow. CNKUANGYA new miniature circuit breaker, with complete parameters, excellent performance, safe and reliable characteristics, provides a professional and efficient circuit protection solution for global photovoltaic systems and power distribution projects. It adheres to international standards, adapts to global market demands, and is an ideal choice for overseas customers to carry out clean energy projects and power distribution engineering.CNKUANGYA will always take product quality as the core, focus on the needs of global customers, continue to optimize product performance, launch more high-quality electrical protection products, and help the stable development of global clean energy and power distribution industries. For global customers who need high-quality MCB products and supporting solutions, CNKUANGYA is a trustworthy partner. Learn more about product parameters, certification details and global procurement services via our official website: https://www.cnkuangya.com.