The 140th Canton Fair has come to a successful end, and LVMA is thrilled to share our rewarding exhibition journey with worldwide partners, solar EPC contractors, importers and system integrators.

As a professional manufacturer of low-voltage electrical and photovoltaic protection products, LVMA brought our full range of solar power protective solutions to this grand global trading platform. Our star exhibit, the 1500V DC solar combiner box, captured heavy attention from international visitors across Africa, the Middle East, Southeast Asia and Central Asia. This fully pre-assembled combiner cabinet integrates DC fuses, DC circuit breakers, main DC isolator switch and DC SPD surge protection devices, built to deliver stable, secure power collection for off-grid and grid-tied solar PV systems.

Core Advantages of LVMA PV DC Combiner Box

✅ Multi-layer Integrated DC Safety Protection Every string is independently protected by DC fuses or DC MCBs to cut off overcurrent and short-circuit faults on individual PV strings. A main DC isolator switch enables safe full-box disconnection during maintenance. Built-in Type II DC SPD absorbs lightning surge and transient overvoltage, preventing damage to inverters and other expensive downstream solar equipment. If one string fails, the rest of your PV array keeps generating power without shutdown.

✅ Heavy-Duty Weatherproof Enclosure for Harsh Climates We adopt UV-stabilized flame-retardant PC enclosure with IP65 protection rating. Dust, rain, moisture and coastal salt spray will not affect internal components. The perforated mounting plate and optimized internal layout reduce condensation, making it suitable for desert, tropical rainy, highland and coastal solar installations. Thickened tinned copper busbars feature low temperature rise and excellent conductivity to minimize power loss.

✅ Flexible Custom OEM & ODM Support LVMA supports fully customized combiner boxes from 4-strings up to 12-strings, available in both 1000V and 1500V DC versions. Customers can choose different component combinations, wiring schemes, enclosure sizes and printing logos. We also provide specially customised printed circuit boards and complete switch assemblies to match unique local project requirements. Our samples shown at the booth displayed clean, standard wiring workmanship, which was highly recognised by visiting engineers.

✅ Lower BOS Cost & Simple On-site Installation By merging multiple PV string cables into one single DC output cable, our combiner box drastically reduces cable consumption, conduit materials and field wiring labour cost. Pre-wired factory assembly saves installation time on site and cuts human wiring errors. The modular design also allows easy future expansion when upgrading your solar plant capacity.

✅ Full International Certifications & Reliable Quality All LVMA solar electrical products including DC MCB, DC fuse holders, SPD and isolator switches hold CE certification and comply with IEC international standards. Strict factory testing before shipment guarantees long service life matching the 25-year lifecycle of solar panels.

During the show, our booth welcomed dozens of global buyers. Many clients stopped by to inspect our assembled combiner box sample and our standalone DC electrical components. Our engineering and sales team communicated face-to-face with visitors, discussing custom enclosure wiring schemes, technical parameters, certification support and OEM/ODM requirements for their local solar projects.

We showcased our capability to build tailor-made printed circuit boards and complete switch assemblies for solar systems. This Canton Fair was a fantastic opportunity to strengthen existing business partnerships and connect with new global importers, EPC contractors and solar system integrators. We received valuable feedback about market demands for DC combiner boxes and low voltage protective devices, which will guide our ongoing product upgrade and R&D work.

Though the 140th Canton Fair exhibition closes, our global cooperation never stops. Whether you need standard PV combiner boxes or fully customized OEM electrical solutions for your solar power project, the LVMA team remains ready for your inquiries.

Contact us today to get technical datasheets, quotation and product catalog for solar DC combiner boxes and low voltage electrical components.