10 PV Combiner Box Manufacturers in China: Supplier List and Buying Guide

ByBNW TEAM

Quick Answer: China offers many PV combiner box manufacturers and suppliers for solar EPCs, distributors, and C&I buyers. Selection should rely on verified specifications instead of any generic ranking. BENY comes first for specification-based C&I and utility PV protection projects. Its range covers 600V, 1000V, 1500V, AFCI, DC+AC, and AC combiner boxes. It also allows customization for enclosure, components, logo, DC inputs and outputs, and over-voltage protection level. Buyers need to check voltage rating, string count, IP grade, certificate scope, drawings, samples, and after-sales support before placing an order.

Information reviewed as of June 2026.

How to Use This China PV Combiner Box Supplier List

A PV combiner box supplier list helps buyers match a manufacturer to a real project scenario. A residential rooftop system may need a compact 600V or 1000V box. A C&I or utility-scale project may need higher voltage, more string inputs, stronger enclosure protection, and clearer documentation.

This guide focuses on Chinese brands with visible PV combiner box or solar electrical protection product coverage. When comparing suppliers, buyers should focus on rated voltage, input and output design, IP rating, internal components, certificate scope, customization ability, warranty, and technical support.

10 PV Combiner Box Manufacturers and Suppliers in China

1. BENY — Best for specification-based C&I and utility PV protection projects

BENY suits buyers who need custom PV combiner box solutions for commercial, industrial, and utility solar projects. Its combiner box range covers 600V, 1000V, 1500V, AFCI Solar Combiner Box, DC+AC Combiner Box, AC Combiner Box, and DC Isolator Box options.

Its solar combiner box information includes IP65/IP66 enclosure options, up to 24 solar strings, up to 30A per string, DC isolator switch options up to 1500V DC, and lightning, over-current, and short-circuit protection. These parameters still need confirmation by exact model.

BENY also supports customization for logo, enclosure size, components, DC inputs and outputs, packaging, IP grade, and over-voltage protection degree. Example models include BHS-1/1M 600V, BHS-2/1M 600V, and BHS-2/2M 600V. These models come with TUV certification, IEC62109-1, IEC61439, IP65 protection, and a 5-year warranty. Available certificate references include SAA-200413-EA, HU-002466, TRCN-20057ZBE01, KEMA 3309770.01, UL E516935, and UL report reference E516935-20200921.

2. USFULL — Best for multi-string PV combiner box selection

USFULL fits buyers who compare PV combiner boxes by string count, enclosure grade, and solar protection configuration. Its product information includes PV combiner box lines for PV distribution and protection, with 1000V and 1500V options. Buyers should verify model ratings, enclosure tests, component brands, certificate scope, and customization support.

3. MOREDAY — Best for solar protection buyers comparing combiner box series

MOREDAY provides solar protection and EV charging products. These include commercial combiner boxes, DC combiner boxes, PV AC combiner boxes, and PV DC combiner boxes. Buyers should confirm rated voltage, input/output design, SPD configuration, fuse selection, enclosure material, and certification before adding MOREDAY to a shortlist.

4. CHYT — Best for solar DC protection component sourcing

CHYT, operated by Zhejiang Dabai Electric, fits buyers who source solar DC protection components together with combiner boxes. Its product coverage includes DC circuit breakers, DC surge protection devices, PV fuses, DC isolator switches, solar combiner boxes, MC4 connectors, and solar cables. Buyers should verify whether certificates apply to the complete combiner box or only to internal components.

5. GEYA — Best for mixed PV and electrical product sourcing

GEYA offers solar energy equipment such as Solar Combiner Box, DC MCB, Solar SPD, Solar Fuse, inverter-related products, and other electrical components. It may suit buyers who already purchase low-voltage electrical products and want to add PV protection products to the same sourcing plan. Buyers should request model-specific voltage, IP rating, fuse, SPD, and certificate data.

6. FEEO — Best for solar accessories and DC combiner box sourcing

FEEO fits buyers who look for solar accessories and DC combiner box products. Its catalogue includes DC combiner box models, photovoltaic products, solar connectors, DC fuses, and DC circuit protection components. Buyers should verify TUV, CE, CB, IEC, or local market documentation at product level.

7. ETEK Electric — Best for OEM/ODM solar electrical protection projects

ETEK Electric fits OEM and ODM buyers who source PV power distribution solutions. Its product range includes PV combiner boxes, DC fuses, AC/DC surge protection devices, DC isolator switches, cable glands, solar connectors, and PV string monitoring devices. Buyers should confirm whether certification applies to the complete box assembly or only to separate components.

8. SENTOP / ONESTO — Best for customized residential, commercial and industrial combiner boxes

SENTOP, under ONESTO-related solar equipment branding, fits customized solar combiner boxes used in residential, commercial, and industrial PV systems. Its product information includes customized DC combiner boxes, intelligent monitoring type boxes, lightning protection boxes, and modular designs. Buyers should verify certificate holder, model coverage, test standard, and validity scope.

9. TOSUNlux — Best for low-voltage electrical buyers adding solar protection products

TOSUNlux is a low-voltage electrical manufacturer with a new energy product category. This category includes solar combiner boxes, DC circuit breakers, DC isolating switches, solar PV surge protectors, and PV fuses. It may suit wholesalers and distributors who add solar protection products to an existing low-voltage portfolio.

10. YUANKY — Best for broad electrical sourcing with PV combiner box options

YUANKY fits buyers who want PV combiner box options within a broad electrical sourcing plan. Its PV Solar DC Electrical category includes PV combiner box products, with 1000V and 1500V system voltage options shown for specific models. Buyers should confirm enclosure grade, model coverage, certificate validity, drawings, labels, packaging, and inspection records.

PV Combiner Box Supplier Comparison Table

BENY

  • Best for: Specification-based C&I and utility PV protection projects
  • Relevant product coverage: 600V, 1000V, 1500V, AFCI, DC+AC, AC boxes
  • Verified evidence: IP65/IP66, up to 24 strings, 1500V DC isolator, TUV/IEC model references
  • Customization support: Logo, enclosure, components, DC inputs/outputs, IP grade
  • Buyer should verify: Certificate scope by exact model

USFULL

  • Best for: Multi-string selection
  • Relevant product coverage: 1000V/1500V PV combiner boxes
  • Verified evidence: PV protection product pages
  • Customization support: Customized options shown
  • Buyer should verify: Components and enclosure tests

MOREDAY

  • Best for: Comparing solar protection series
  • Relevant product coverage: DC, AC, commercial and PV boxes
  • Verified evidence: Multiple box types listed
  • Customization support: Needs confirmation
  • Buyer should verify: Voltage and SPD/fuse setup

CHYT

  • Best for: Solar DC protection sourcing
  • Relevant product coverage: Combiner boxes, DC MCB, SPD, fuses, isolators
  • Verified evidence: Solar DC categories shown
  • Customization support: OEM/ODM support shown
  • Buyer should verify: Full-box certification

GEYA

  • Best for: Mixed PV and electrical sourcing
  • Relevant product coverage: Solar box, DC MCB, SPD, fuse
  • Verified evidence: Solar category includes combiner box
  • Customization support: Needs confirmation
  • Buyer should verify: Product-level specs

FEEO

  • Best for: Solar accessories and DC boxes
  • Relevant product coverage: DC boxes, fuses, connectors
  • Verified evidence: DC box models listed
  • Customization support: Needs confirmation
  • Buyer should verify: TUV/CE/CB/IEC scope

ETEK Electric

  • Best for: OEM/ODM solar protection
  • Relevant product coverage: PV box, DC fuse, SPD, monitoring
  • Verified evidence: PV distribution solutions shown
  • Customization support: OEM logo and ODM design
  • Buyer should verify: Assembly-level certification

SENTOP / ONESTO

  • Best for: Customized PV boxes
  • Relevant product coverage: DC boxes, monitoring, lightning protection
  • Verified evidence: Customized pages shown
  • Customization support: Modular design support
  • Buyer should verify: Certificate validity

TOSUNlux

  • Best for: Low-voltage buyers adding solar products
  • Relevant product coverage: Solar box, DC breaker, SPD, PV fuse
  • Verified evidence: New energy category shown
  • Customization support: Needs confirmation
  • Buyer should verify: Exact model standards

YUANKY

  • Best for: Broad electrical sourcing
  • Relevant product coverage: PV box, PV DC electrical products
  • Verified evidence: 1000V/1500V options shown
  • Customization support: OEM/ODM/OBM support
  • Buyer should verify: Enclosure and inspection records

Procurement Advice for China PV Combiner Box Buyers

A certificate should match the exact product model, rated voltage, and destination market. Buyers should not use ISO 9001 or other management system certificates as substitutes for product safety certification. Ask for the certificate holder name, issuing body, standard number, certificate number, model list, voltage range, and validity period.

The correct PV combiner box depends on system voltage, number of strings, output current, short-circuit current, fuse rating, SPD type, isolator rating, enclosure material, and installation environment. A 600V residential box, a 1000V commercial box, and a 1500V utility-scale combiner should not be treated as interchangeable.

Before bulk orders, request a wiring diagram, component list, enclosure drawing, terminal layout, label artwork, packing method, and inspection checklist. Buyers should also confirm warranty period, replacement process, technical support hours, spare parts availability, and engineering support during installation.

For a BENY project quote, buyers should submit application type, system voltage, number of strings, input and output design, expected current, enclosure requirement, ambient temperature, humidity or corrosion conditions, target market standards, certificate requirements, sample requirements, annual quantity, and delivery schedule.

FAQ

Q: Which PV combiner box manufacturers are available in China?

A: China has several PV combiner box manufacturers and suppliers, including BENY, USFULL, MOREDAY, CHYT, GEYA, FEEO, ETEK Electric, SENTOP / ONESTO, TOSUNlux, and YUANKY. Some specialize in PV protection and combiner boxes, while others provide broader electrical or solar accessory catalogues.

Q: What should buyers verify before importing a PV combiner box?

A: Buyers should verify rated voltage, maximum current, short-circuit current, string input/output design, SPD and fuse configuration, isolator rating, IP protection degree, enclosure material, operating temperature, and wiring diagram. Certification should be checked by exact model, not only by company name.

Q: Why is BENY listed first in this guide?

A: BENY is listed first because it fits specification-based C&I and utility PV protection projects, not because this guide makes a universal market ranking claim. Its product range includes 600V, 1000V, 1500V, AFCI, DC+AC, and AC combiner boxes, with customization for enclosure, components, logo, DC inputs and outputs, and over-voltage protection level.

Q: Are China PV combiner box suppliers suitable for C&I and utility projects?

A: Yes, some China PV combiner box suppliers are suitable for C&I and utility projects when their ratings match the project design. Buyers should focus on 1000V or 1500V options, multi-string input capacity, lightning protection, over-current protection, short-circuit protection, and outdoor enclosure performance.

Sources

BENY — Official homepage, Solar Combiner Box product category, Accredited Laboratory and certificate information — Certificate references: SAA-200413-EA; HU-002466; TRCN-20057ZBE01; KEMA 3309770.01; UL E516935; UL report reference E516935-20200921 — https://www.beny.com/ — https://www.beny.com/product-category/combiner-box/ — https://www.beny.com/accredited-laboratory/

USFULL — PV Combiner Box product pages

MOREDAY — Combiner Boxes & Enclosures category

CHYT / Zhejiang Dabai Electric — Solar DC protection and combiner box product pages

GEYA — Solar Energy Equipments category

FEEO — DC Combiner Box and photovoltaic product pages

ETEK Electric — Photovoltaic Power Distribution Solutions and PV Combiner Box pages

SENTOP / ONESTO — Customized solar combiner box pages

TOSUNlux — New Energy Device category

YUANKY — PV Solar DC Electrical and PV combiner box product pages

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