Professional Combiner BOX Manufacturer
BWX-Z 600V/1000V 6 STRINGS 6 IN 1 OUT
The grid-tied PV distribution box features an integrated design, neat wiring, comprehensive protection, and convenient operation; it is fully compatible with grid-tied systems and ensures stable performance.
BWX-Y600V/1000V 6 STRINGS 6 IN 1 OUT
Integrates multiple functions to reduce energy consumption and save space; features multi-level protection, simple operation, and ease of maintenance; offers strong adaptability and stable performance.
BWX-X 600V/1000V 6 STRINGS 6 IN 1 OUT
Centralized wiring ensures system stability; comprehensive protection eliminates safety hazards; a modular structure facilitates efficient O&M; and grid-compliant integration ensures full standard compatibility.
BWX-600V/1000V 6 STRINGS 1 IN 1 OUT
Neatly routed wiring ensures stable operation; comprehensive protection mechanisms prevent potential hazards. The modular design facilitates easy installation and maintenance, ensuring full compliance for grid connection.
BWX-600V/1000V DC COMBINER BOX 4 IN 1 OUT
This 4-in-1-out DC combiner box integrates power from multiple PV panels and is an essential auxiliary component for photovoltaic power stations.
BWX-600V/1000V 6 STRINGS 6 IN 1 OUT
The 600V/1000V 6-in-1-out Combiner Box is specifically designed to optimize PV system wiring; it aggregates power from multiple PV strings, serving as the core interconnection hub of the system.
BWX-T AC DISTRIBUTION BOX
A residential AC distribution box—also known as an electrical distribution board or consumer unit—is a critical component of a home’s electrical system; it ensures the safe and efficient distribution of power while providing protection against electrical faults and overloads.
PV DC COMBINER BOX BWX-4/1 6/1 12/1
This PV combiner box is available in various configurations—including 4/1, 6/1, and 12/1—enabling the centralized combination of multiple PV module circuits. It simplifies wiring layouts and ensures the orderly and safe operation of the PV system.
PV AC COMBINER BOX BWX-1/1 1/1
For a photovoltaic system to operate safely and efficiently, essential ancillary equipment is indispensable. As a critical component of the system, the PV AC combiner box aggregates the power output from multiple PV strings and arrays, consolidating them into a single, centralized output.
PV DC COMBINER BOX 16 STRINGS BWX-16/1
As an essential component of photovoltaic power stations, the PV DC combiner box integrates multiple string circuits, thereby simplifying wiring management.
PV DC COMBINER BOX 24 STRINGS BWX-24/1
The BWX-24/1 is a 24-string DC combiner box designed for large-scale photovoltaic projects. Its wiring layout facilitates easy monitoring and maintenance, while built-in overcurrent and overvoltage protection ensure safe and reliable system operation.
PV GRID-CONNECTED BOX BWX-200
The BWX-200 Grid-Tied PV Distribution Box features reliable performance, a robust design, and exceptional ease of use, making it suitable for residential, commercial, and large-scale photovoltaic projects.
PLASTIC PV DC COMBINER BOX BWX-A / BWA-B
This combiner box delivers exceptional performance, meeting the requirements of residential, commercial, and utility-scale PV projects by efficiently consolidating and managing multiple sets of PV modules.
PLASTIC PV DC COMBINER BOX BWX-A / BWX-B
It features an IP65-rated plastic enclosure capable of withstanding harsh weather conditions, providing protection against dust and water while isolating the device from various external environmental factors.
PLASTIC PV DC COMBINER BOX BWX-A / BWX-B
Suitable for a wide range of photovoltaic applications, it efficiently integrates and manages multiple sets of solar panels, ensuring stable and reliable operation.
PLASTIC PV DC COMBINER BOX BWX-A / BWX-B
It features an IP65-rated plastic enclosure, offering excellent dust and water resistance to effectively withstand the corrosive effects of complex outdoor environments.
PLASTIC PV DC COMBINER BOX BWX-A / BWX-B
This product is suitable for use in various photovoltaic projects, enabling the centralized management of multiple solar panel arrays with exceptional operational stability.
PLASTIC PV DC COMBINER BOX BWX-A / BWX-B
Featuring a high-specification IP65 protection design, the housing is both waterproof and dustproof, effectively shielding against external interference and making it suitable for a wide range of harsh weather conditions.
PV DISTRIBUTION BOX BWX-20
The BWX-20 PV Distribution Box is suitable for various photovoltaic projects, integrating inversion, monitoring, and multiple safety configurations to ensure efficient and secure operation.
PV GRID-CONNECTED DISTRIBUTION BOX
The grid-tied PV distribution box features a robust design, high-efficiency performance, and convenient operation, making it suitable for a wide range of photovoltaic applications.
PV AC COMBINER BOX BWX
The photovoltaic AC combiner box is a critical component of a power generation system, responsible for aggregating multiple photovoltaic outputs to facilitate centralized interconnection.
Custom Your Combienr Box
Why choose CNTN brand combiner boxes?
SAFETY
Robustly guards against electrical faults and eliminates fire risks. Featuring professional overcurrent and surge protection designs, it comprehensively safeguards the worry-free operation of photovoltaic power stations.
EFFICIENCY
It significantly reduces power loss, making the transmission of electricity from the photovoltaic panels to the inverter more efficient. Precision wiring ensures tight connections and minimizes resistance, thereby fully harnessing every joule of solar energy.
DURABILITY
Crafted from meticulously selected materials with exceptional corrosion resistance, it steadfastly maintains its performance—even when exposed to the elements and extreme temperatures—providing enduring protection for photovoltaic systems.
EXPERIENCE
Manufacturers with deep roots in the photovoltaic industry and an extensive track record of successful projects offer greater assurance regarding product quality and stability. It is recommended to prioritize partner manufacturers with a proven portfolio of mature projects and an excellent reputation.
CERTIFICATION
Certification by authoritative industry bodies signifies that a product meets—or even exceeds—current quality and safety standards. It is recommended to select products bearing certifications such as UL, IEC, or TÜV, as this offers enhanced assurance of regulatory compliance.
CUSTOMIZATION
Given the varying operating conditions of photovoltaic systems, combiner boxes can be customized to meet specific requirements. Reputable manufacturers offer personalized customization options to accommodate diverse module counts, wiring configurations, and monitoring needs.
Premium Materials, High-Quality Components
LONG-LASTING AND DURABLE
CNTN Electric’s BWX series combiner boxes feature upgraded enclosure protection, offering full IP65-rated protection as well as flame-retardant and weather-resistant properties.
Designed for outdoor rooftop PV systems, they utilize components from top-tier brands to ensure stable and reliable operation。
Fully Customized Solutions
We offer on-demand customization for branding, components, complete systems, and packaging, allowing us to flexibly align with your specific market requirements.
Supported by a dedicated technical specialist available for real-time communication, we provide comprehensive support throughout the entire process—from initial solution design to after-sales service.
We look forward to cultivating a deep, long-term partnership with you.
At CNTN, we remain steadfast in our mission to safeguard the security of our clients’ solar equipment, dedicating ourselves to providing exceptional product protection.
Why choose a high-quality PV combiner box?
Opting for a high-quality combiner box serves as an insurance policy for your power station’s revenue. It not only prevents financial losses caused by downtime resulting from faults—such as short circuits or fires—but also eliminates the costs associated with frequent repairs.
By ensuring the generating units operate normally year-round and extending the power station’s service life, it helps you save a substantial amount in hidden costs over the long term.
How to Choose a Power Distribution Box Manufacturer
When selecting a manufacturing partner, we prioritize a company’s experience in photovoltaic component production and the completeness of its certifications.
The materials used for product panels and components are fully traceable, and the outdoor products meet all regulatory standards for corrosion resistance and waterproofing.
Do CNTN Electric's PV combiner boxes feature waterproofing capabilities?
The CNTN PV Combiner Box is designed for open-air outdoor deployment and exhibits exceptional weather resistance.
The enclosure is manufactured using a specialized processing technique featuring raw materials embedded with flame-retardant additives; this effectively blocks intense solar radiation while offering comprehensive protection against dust and corrosion.
With an overall ingress protection rating of IP65, the unit confidently withstands the complexities of harsh field environments, providing all-weather protection for the internal electrical components.
Capable of operating stably even after enduring rigorous tests involving extreme weather conditions—such as intense sunlight and heavy rainfall—it stands as the premier choice for outdoor auxiliary equipment in photovoltaic power stations.
What material issues should be paid attention to in the combiner box?
When selecting a photovoltaic combiner box, the choice of materials is of paramount importance, as material durability and environmental compatibility directly determine the equipment’s service life in outdoor field environments.
High-quality enclosures typically utilize modified polycarbonate engineering plastics or precision-finished corrosion-resistant metals. These raw materials offer long-term resistance against UV-induced aging and acid-base corrosion, enabling the unit to withstand complex climatic conditions—including extremes of high and low temperatures, as well as high humidity—with ease.
Supported by these superior base materials, the enclosure structure remains resistant to deformation while maintaining consistently stable electrical performance, thereby providing comprehensive protection to ensure the long-term, stable power generation of the photovoltaic power station.
Will wiring problems affect the performance of the solar combiner box?
Improper wiring practices can easily lead to abnormal temperature rise in combiner boxes and compromised power generation efficiency; in severe cases, they may even trigger safety incidents.
To ensure the long-term safety and operational integrity of a PV system, it is imperative that all connection points are securely fastened and that wiring specifications strictly align with the rated voltage and current standards of the equipment.
Standardized wiring minimizes line losses and enhances power transmission efficiency, thereby preventing circuit faults caused by wiring defects at the source and fortifying the safety defenses of the entire PV power plant.
How should a DC combiner box be maintained routinely to ensure a longer service life?
**Periodic Wiring Inspection:** It is recommended to conduct a wiring verification check every few months to ensure that all terminal connections are securely fastened. Loose wiring can easily lead to excessive contact resistance, posing safety risks such as cabinet overheating or even fire.
**Cabinet Cleaning and Maintenance:** Promptly remove accumulated dust, dirt, and debris from both the interior and exterior of the cabinet to prevent short circuits caused by damp dust and to avoid corrosion of metal components. In project sites characterized by high dust levels or high humidity, the frequency of cleaning and maintenance should be increased.
**Waterproofing and Sealing Verification:** Routinely inspect protective structures—such as cabinet sealing gaskets and waterproof connectors—for integrity. Should any cracks or damage be detected, immediately repair and reseal the affected areas to prevent rainwater or condensation from entering the cabinet and damaging internal components.
**Protective Component Inspection:** Periodically test the operational status of protective devices, such as fuses and DC circuit breakers. These components serve as critical safety barriers within the circuit; in the event of a system overload, they can rapidly interrupt the circuit, effectively protecting the combiner box from burnout.
**Metal Component Anti-Corrosion Inspection:** Carefully inspect wiring terminals and metal fasteners for signs of corrosion. Corrosion degrades conductivity and can lead to poor electrical connections, thereby reducing power generation efficiency and creating potential electrical safety hazards.
**Operational Power Monitoring:** Continuously monitor the output power of the PV system in real-time. An unexplained decline in power generation often serves as an early warning signal of an anomaly within the combiner box; if a drop in power output is observed, the unit should be immediately inspected to diagnose and resolve the fault.
**Professional O&M Advisory:** Do not attempt to dismantle or repair the equipment yourself unless you possess the requisite electrical operational qualifications. It is highly recommended to engage a certified O&M engineer to perform on-site maintenance and accurately diagnose any potential hidden faults.
What electrical components can be placed inside a combiner box?
The photovoltaic DC combiner box comes standard from the factory equipped with four core components: DC fuses, DC circuit breakers,DC molded case circuit breaker， DC surge protective devices, and copper busbars with wiring terminals.
To enhance product functionality, optional expansion modules—such as intelligent data acquisition units, anti-reverse current diodes, temperature-controlled fuses, and grounding terminal blocks—can also be added as required.
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