The Reliable Heart of Your Solar Protection: DC Circuit Breakers, SPDs, Fuses & Isolator Switches.
The performance and safety of a PV combiner box rely heavily on the quality of its internal electrical components. LETOP uses and offers a range of rigorously selected PV combiner box components, ensuring optimal protection, isolation, and longevity for solar installations. Trust the components designed for demanding PV applications. Quality parts are the foundation of reliable systems.
Conveniently procure combiner boxes and all necessary installation accessories from a single, trusted supplier.
Accessories are selected and tested for seamless integration with LETOP combiner boxes and standard PV system components.
High-quality materials and adherence to relevant standards ensure durability and long-term performance, critical for overall system lifespan.
Reduce complexity by consolidating shipments and managing fewer suppliers for your project needs.
As an exclusive partner of engineering installers and electrical wholesalers, LETOP takes modular design + flexible supply chain as the core to help you quickly respond to end-customer needs and seize the opportunities in the residential and industrial and commercial photovoltaic markets.
Provide essential overcurrent and short-circuit protection for PV strings or arrays. Available in various voltage/current ratings, up to 1500V. It complies with IEC 60947-2.
Protect sensitive equipment (like inverters) from transient overvoltages caused by lightning or switching surges. Type 1/2 available, compliant with IEC 61643-31 / EN 50539-11.
Offer precise overcurrent protection, typically for individual strings. High breaking capacity, 10x38mm or other standard sizes, gPV characteristics for solar applications.
Provide safe manual disconnection of DC circuits for maintenance or emergency. Load break capability, padlockable options, ratings up to 1500V. Compliant with IEC 60947-3.
The failure of a single internal component can compromise the entire solar array’s performance and safety. LETOP prioritizes components demonstrating:
Investing in quality components is investing in the long-term health and output of your solar asset.
Built to withstand demanding DC voltage and current conditions.
Correct voltage, current, and breaking capacity for PV applications.
Ensuring long-term reliability in real-world conditions.
Compliance verified through adherence to stringent IEC testing protocols.
Explore our range of high-reliability DC components for solar combiner boxes. Select the specific breakers, SPDs, fuses, or isolators required for your project, replacement, or custom build. For bulk inquiries or technical assistance in selecting the right components, contact our expert team today.
Here you can find some of your common questions related to this topic, which can help answer your doubts.
PV combiner box assemblies usually include DC SPD, DC fuses, DC circuit breakers (or disconnectors), wiring terminals, and optional monitoring equipment, which together ensure the electrical safety and efficient transmission of the PV system.
Yes, LETOP provides comprehensive PV combiner box assembly customization services. We can customize the housing type, input string number, integrated monitoring system, system voltage (500V, 1000V, 1500V), and SPD and fuse ratings according to your specific needs.
LETOP has 15+ years of industry experience and strictly follows international quality standards such as ISO, IEC, CE, and TUV. We use advanced manufacturing processes and conduct 100% factory testing, including high and low temperature testing, life cycle testing, etc., to ensure long-term and stable operation of the product in various environments.
Our modules are widely used in a variety of application scenarios such as commercial and industrial rooftop photovoltaic systems, large-scale ground photovoltaic power stations, public utility projects, and electric vehicle charging stations.
DC SPD (surge protector) is used to prevent transient overvoltage caused by lightning or switching operations from damaging the system. DC fuses provide overcurrent protection in the event of short circuit or overload, protecting PV modules and inverters, and are an indispensable safety component in the combiner box.
You can contact us directly through the contact form on the page, email or phone. Our sales and technical teams will respond to your needs as soon as possible and provide detailed product information and customized quotes.
Yes, LETOP deeply understands the OEM/ODM cooperation model. We have successfully participated in OEM projects of many well-known brands and can provide full support from product design, development to mass production to help brand owners achieve product success.
The selection of components requires consideration of system voltage, maximum operating current, environmental conditions, and the required level of protection. Our technical team can provide professional selection suggestions based on your specific project parameters to ensure that the components are perfectly matched with the system.
Yes, our photovoltaic combiner box components are strictly designed and produced in accordance with international standards, and have passed multiple international authoritative certifications such as CE, TUV, IEC, etc., to ensure that the products meet the safety requirements of the global market.
With 20 years of industry accumulation and long-term cooperation with raw material suppliers, LETOP is able to optimize supply chain management and effectively control production costs, thereby providing customers with market-competitive price advantages.
If no relevant issues are found, please contact us, E-mail:info@letopv.com.
If you have any questions, please contact us and we will reply within 24 hours.
No. 19, Fenjin Road, Dongfeng Industrial Zone, Yueqing, Wenzhou, China 325604
info@letopv.com
+86-13175631986
