Xingyuan Electric (Suzhou) Co., Ltd. runs its own base in Wujiang, Suzhou. As a PV combiner box manufacturer we build DC combiner boxes, surge-protected combiner boxes and residential combiner boxes for solar plants, focusing on IP65 protection, MC4 terminals, surge arresters, breakers and monitoring module mounts, made-to-print and volume supply.
In-house production and engineering team: sheet-metal workers, welders, assemblers, QC and engineering support
Combined area of two self-owned production bases — not rented stalls or assembly workshops
Fiber laser cutters, CNC press brakes, laser welders, aluminum welders, tapping and riveting machines, etc.
Laser cutting and bending tolerance control; profile frame flatness is inspected
Typical batch lead time; production is scheduled after sample approval
Quality management system certified, RoHS compliant, inspection records available
As a sheet metal cabinet manufacturer, all products below are made in our own workshop; non-standard sizes available from drawings or samples.
Multi-string combiner with fuses, breaker and surge.
Combiner with reinforced surge arrester and SPD.
Compact combiner for small residential PV.
Combiner structure with current/temp monitoring and comms.
Large multi-string high-current combiner for big plants.
Custom combiner boxes from PV equipment drawings.
As a Suzhou cabinet manufacturer, all six processes below are completed in our own workshop — nothing is outsourced.
1.5kW fiber laser cutting leaves clean edges without re-grinding; precision meets the fitting requirements of panels, side plates and rear plates.
CNC press brakes with dedicated tooling control bend angle and springback, ensuring flatness and consistent gaps after assembly.
Corners and reinforcements are laser or argon-arc welded; smooth seams leave no visible bumps after coating and do not affect locks or hinges.
9-fold and 16-fold profile frames are built to standard sizes and rail spacing, compatible with standard rails, fans, thermal control and PDUs.
Steel sheets are degreased, phosphated and powder-coated; adhesion and thickness are sampled per batch; stainless parts are brushed or passivated.
After locks, hinges and gaskets are installed, every unit is inspected for operation, sealing and interfaces; inspection records ship with each order.
When vetting a supplier, verify the following on site — all of them can be seen at our Wujiang factory.
Outdoor PV boxes need IP65+ with sealed doors and glands.
Surge arrester and DC breaker selection decide safety.
MC4 terminals, busbar and wiring reduce heat and faults.
Smart boxes reserve current/temp and comms ports.
Plant projects are large; confirm consistency and lead time.
Yes. We build DC, surge-protected and residential combiner box structures and assembly.
Typically IP65 with surge arresters and DC breakers per plant config.
Yes. MC4 terminals, busbar mounts and current/temp comms ports.
Yes. Compact residential PV combiner structures are available.
Usually 7-15 days; plant projects schedule after drawing and config.
Xingyuan Electric covers a wide range of cabinets and sheet-metal enclosures; click to view each topic page.
Visit the sheet metal cabinet topic page for features, processes and selection tips.
Visit the special gas cabinet topic page for features, processes and selection tips.
Visit the server cabinet topic page for features, processes and selection tips.
Visit the 9-fold profile network cabinet topic page for features, processes and selection tips.
Building C, No. 169 Longjing Road, Lili Town, Wujiang District, Suzhou, Jiangsu, China
+86 152 2123 4007 (WeChat same)
Suzhou, Kunshan, Wujiang, Shanghai, Wuxi, Changzhou, Nantong and the Yangtze Delta; nationwide shipping available
Call us with your drawings and specs; sample visits and quotations can be arranged;Leave a message online