Solar Combiner Box Manufacturing
LETOP's lean production system ensures that each solar combiner box has stable and consistent quality and high production efficiency.
LETOP provides customized 600V/1000V/1500V PV combiner box solutions. 20 years of experience, ISO-certified, 300+ global partners.
One-stop solution, 40% more efficient than other solar combiner box factory. Located in the world largest PV industrial zone and complete supply chain. Help you optimize BOM cost and fast production.
Simply tell us your requirements for custom solar combiner boxes. Our team will respond within 30 minutes with the best price and fastest delivery time, helping you make procurement decisions quickly.
Certified with ISO 9001/14001/45001 global standards. 100% factory testing for each dc combiner box, with 20% random sampling inspection for each batch. Ensure product consistency and stable supply.
LETOP has served PV projects in over 50 countries, with total installations exceeding 200GW. We are the preferred PV combiner box supplier for many solar elctrical brand, distribution, and installers.
LETOP provide a complete solar combiner box & related PV components for residential, commercial and utility-grade applications, providing professional OEM/ODM customization services.
600V/1000V/1500V solar combiner boxes for residential, commercial, and utility-scale applications.
High-reliability DC Circuit breakers, Fuses, SPDs, and Isolator switchs for PV system protection.
Complete range of Enclosures, Connectors, Cables, and Glands for seamless integration.
Reliable control devices for efficient power distribution and protection in various industrial and commercial settings.
LETOP's lean production system ensures that each solar combiner box has stable and consistent quality and high production efficiency.
LETOP focuses on supporting the pv power distribution industry and improving productivity. We have a modern 22,000 square meter workshop equipped with imported precision production equipment. 16 production lines operate efficiently, providing box assembly and assembly lines. Covering a full set of processes such as injection molding, digital hole opening, dispensing, tapping, laser marking, etc. LETOP provides you with reliable product guarantees with exquisite craftsmanship and strong production capacity.
Mount the component bracket and the Integrationting plate.
Professional installation of DC circuit breakers, fuses, and surge protectors.
High-quality copper busbar connections ensure optimal electrical performance and minimized power loss.
Connect Lap Copper Plates and Wiring
Align the assembled mounting plate and place it into an IP65/IP66-rated enclosure with precision.
The professional connection of input and output terminals, followed by thorough electrical testing and verification.
Install IP67-rated waterproof cable connectors for long-term environmental protection.
Final assembly using a UV-resistant cover plate and comprehensive sealing integrity verification.
Final inspection, laser marking, and professional packaging with anti-static protection for global shipping.
We take "zero defect outflow" as the control baseline and establish a three-layer filtering mechanism: EU RoHS material screening and UL94-V0 grade hot wire flame retardant test are carried out at the raw material stage; IP65 and IP66 standard full sealing and anti-seepage experiments are carried out during the process; IEC61215 standard mechanical load test and double 85 aging test are implemented at the finished product stage.
We specialize in high-performance solar combiner boxes, DC components, and PV system accessories. With 20 years of expertise in solar electrical engineering,
we are committed to delivering reliable, customized combiner box solutions for utility-scale solar farms, commercial installations, and residential PV systems worldwide.
LETOP builds operational credibility through a multi-layer certification framework. Our factory is certified by ISO9001:2015, ISO14001:2015 and ISO45001:2018 systems.
Many products hold CE/CB and RoHS certificates.
Bring your vision to life with us. Whether it’s a custom combiner box, or retaed electrical components, you will get high-quality manufacturing, our team will guide you through every step.
LETOP provides an All-in-one combiner box, it integrates key components such as DC circuit breaker, DC fuse and DC surge protective device. You only need to connect the wires to easily complete the series connection of solar panels. You can choose monitoring equipment and expand additional functions, such as adding an extra isolator switch or second MPPT. Maximize the performance and power generation capacity of the pv system.
Adopt IP65/66 protection + Class II double insulation design, dustproof, waterproof, anti-corrosion, anti-ultraviolet, adapt to extreme climatic conditions. High-quality PV special components, high-quality copper bus materials. Multi-layer protection covers lightning protection, overcurrent, short-circuit protection, grounding protection, arc detection, positive and negative pole fusing and fast shutdown, and the failure rate is 60% lower than the industry average.
Experienced team of engineers in the industry responds quickly 24/7, providing drawing review and technical consultation. Relying on the advantages of the global industrial belt center, we provide the best optimization suggestions to balance budget and performance requirements. Combined with plug-and-play structured modules and flexible options, we help customers shorten the project cycle by 30% and achieve the best cost configuration.
From small start-up to global enterprises, we have proudly partnered with 300 brands and organizations across various industries. We have gained their trust and loyalty through our commitment to quality, customization, and reliability.
LETOP are lightning fast! Twice as quick as our other suppliers. When you're running major solar projects, every hour counts, and they never keeps us waiting.
I remember asking them a technical question at 2 AM, and man, they got back to me right away! That's what I call real 24/7 support!
We're incredibly picky about quality - it's just how we are. But in 3 years with LETOP? Zero quality issues. That's the kind of reliability we need.
LETOP are our rock. Same quality, same service, year after year. That's why we signed a 5 years deal with them.
In order to provide an accurate quote, we need to know your desired product model, quantity, customization options (e.g. branding, printing, packaging, etc.), and any specific technical requirements.
In addition to the pv combiner boxe, we are happy to provide FREE component samples. You only need to provide the courier account number or pay the shipping cost to get FREE samples for review and testing. Please contact our contact our sales team. For more details please check our sample page.
Our MOQ is according to the product and customized service. Please check services. You can also consult our expert team.
Yes, we offer discounts for high volume orders. The discount rate depends on the size of the order and the complexity of the customized service. Please consult our team of experts for specific information.
Our standard delivery time is:
Specific delivery time will vary according to your order size, degree of customization and our production plan. We will provide an estimated delivery time when quoting.
Yes, we offer custom packaging services including brand printing, custom packaging and design to meet your specific needs. For more details, please visit Services. Or contact our technical team to discuss your needs.
We offer custom development services to meet your specific needs. Please see services for more details. Please contact our technical team to discuss your requirements.
T/T payment terms. We can also provide local collection accounts. Please consult our service team for details.
We provide comprehensive after-sales services, including product consulting, technical support and warranty services. Our professional team is ready to help solve your problems.
If no relevant issues are found, please contact us, E-mail:[email protected].
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
+86-13175631986
Share your needs with us. We will contact you within 12 hours.
