Top 10 DC SPD Manufacturers in China for Solar PV Protection
Quick answer:, Prosurge, CHINT, LEEYEE, THOR Electric, HIITIO, Techwin, FEEO, Gandian/GA&DA, and ETEK. BENY is listed first for projects that need named 600–1500V PV DC SPD models together with solar combiner-box integration options. This is a procurement shortlist, not a market-share or sales ranking. Final selection must match the exact device to IEC/EN 61643-31, calculated maximum PV voltage, protection type, discharge ratings, voltage protection level, short-circuit conditions, grounding topology, installation position, and model-specific certificate scope.
Information reviewed as of July 2026.
How to Use This DC SPD Manufacturer List
This Is a Procurement Shortlist, Not a Universal Ranking
The ten manufacturers below have official evidence of DC surge protective devices for photovoltaic or closely related DC applications. Inclusion does not mean that every model carries the same certification or fits every PV system. Buyers should treat each brand as a candidate for technical qualification.
A 600V rooftop array and a 1500V utility-scale plant have different voltage, lightning exposure, short-circuit, and coordination requirements. Compare complete model codes and supporting documents rather than choosing from a logo, a generic “40kA” claim, or a brand-level certificate.
Ratings Buyers Should Compare First
IEC 61643-31:2018 covers SPDs intended for the DC side of PV installations up to 1500V DC. Start by confirming Ucpv against the array’s maximum open-circuit voltage at the lowest expected temperature. Then define whether Type 2 protection is suitable or Type 1+2 is required because lightning-current components may enter the system.
Compare In and Imax for the 8/20 μs waveform, Iimp for Type 1 duty using 10/350 μs, Up, Iscpv or SCCR, protection mode, backup protection, disconnection design, terminal range, status indication, remote contact, cartridge replacement, operating temperature, and enclosure conditions. A high Imax cannot compensate for unsuitable voltage, topology, Up, or fault-current capability.
Supplier Comparison Table for PV Buyers
| Manufacturer | Best for | Reviewed PV DC product evidence | Main buyer check |
| BENY | Standalone SPD plus combiner-box projects | BUD-40/2, BUD-40/3, BUD-S1500, BUD-1500 | Match certificate to ordered model |
| Prosurge | Broad SPV voltage comparison | SPV family from 600V to 1500V | Confirm UL/IEC version and suffix |
| CHINT | Consolidated low-voltage sourcing | Ex9UEP, Ex9UEP1+2, CU-CZ | Confirm regional SKU and certificate |
| LEEYEE | OEM and panel-builder projects | 600V, 1000V, 1500V PV DC SPD | Verify OEM change control |
| THOR Electric | Configurable Type 2/Type 1+2 | TRS3 range up to 1500V | Verify Iscpv and custom ratings |
| HIITIO | New 1500V monitored PV designs | HSPD1/HSPD2 1500V | Verify current certificate files |
| Techwin | Specialist surge-protection sourcing | PV-system and DIN-rail DC SPD lines | Obtain exact model datasheet |
| FEEO | Solar DC component bundle sourcing | FSP-D40 and PV DC SPD catalog | Verify model certification |
| Gandian/GA&DA | Lightning-protection product sourcing | Solar DC surge protector range | Confirm legal entity and model |
| ETEK | 600–1500V Type 2 and Type 1+2 selection | ETU5 and EKU5 PV series | Confirm ordered voltage and poles |
10 China DC SPD Manufacturers to Evaluate
1. BENY — Best for PV SPD and Combiner-Box Integration
BENY documents multiple PV DC SPD models. BUD-40/2 covers 600V and 1000V Type 2 configurations, while BUD-40/3 includes 1000V and 1200V options. Supplied data lists plug-in modules, status indication, and optional remote signaling on selected models.
For 1500V projects, BUD-S1500 is documented as Type 1+2 and BUD-1500 as Type 2 under IEC/EN 61643-31. The BUD-1500 page lists In 20kA, Imax 40kA, Up 5.5kV, three plug-in MOV modules, and optional remote signaling. BENY also offers combiner boxes incorporating DC surge protection. Verify the certificate and protection mode for the exact ordered code.
2. Prosurge — Best for a Broad SPV Product Family
Prosurge publishes SPV series data from 600V to 1500V. Its official document references IEC/EN 61643-31 and selected ANSI/UL 1449 configurations, with In 20kA, Imax 50kA, thermal disconnection, visual status indication, DIN-rail installation, and optional remote alarm contacts for designated suffixes.
Engineering teams can compare several voltage levels within one family, but should confirm the applicable standard path, protection mode, voltage protection rating, SCCR, model suffix, and regional approval.
3. CHINT — Best for Consolidated Low-Voltage Procurement
CHINT publishes Ex9UEP Type 2 and Ex9UEP1+2 photovoltaic DC SPD information. Official pages describe PV application, EN 61643-31 testing, plug-in modules, status windows, and remote-signaling options. CHINT also lists CU-CZ DC SPDs for PV and other low-voltage DC systems.
The wider CHINT portfolio can simplify supplier consolidation, but catalog codes, accessories, certificate files, and availability may differ between regional business units. Cite the exact regional model in the purchase specification.
4. LEEYEE — Best for OEM and Panel-Builder Requirements
LEEYEE presents 600V, 1000V, and 1500V PV DC SPD ranges. Its LY1-C40PV/3(S) 1500V model is documented as Type 1+2 under IEC 61643-31:2018, with Iimp 6.25kA, In 20kA, Imax 40kA, Up 5.6kV, replaceable cartridges, and DIN-rail mounting.
For private-label work, request drawings, marking rules, change control, batch traceability, and certificate files for the OEM version. Standard catalog evidence should not be assumed to transfer automatically.
5. THOR Electric — Best for TRS3 Configuration Choices
THOR Electric lists TRS3 Type 2 and Type 1+2 PV DC SPDs with Ucpv choices extending to 1500V. Its Type 1+2 page gives a 1000V example with Iimp 6.25kA, In 20kA, Imax 40kA, Up no more than 4.0kV, status indication, optional remote contact, and IEC/EN 61643-31 reference.
Some voltages may be customized. Obtain a model-specific datasheet, label drawing, Iscpv rating, test evidence, and certificate before approving a customized configuration.
6. HIITIO — Best for 1500V HSPD Projects
HIITIO’s official HSPD1-1500R/3P and HSPD2-1500R/3P pages describe Type 1+2 and Type 2 photovoltaic DC SPDs. Published values include Ucpv 1500V, In 20kA, Imax 40kA, response time no more than 25ns, plug-in modules, status indication, and remote signaling under IEC/EN 61643-31.
Because this is a relatively new series, buyers should request current certificates, production drawings, change history, sample-test records, and field references rather than relying only on launch material.
7. Techwin — Best for Specialist Surge-Protection Sourcing
Techwin presents itself as a surge-protection specialist and organizes products for power supplies, solar/PV systems, wind power, signals, and monitoring. Its official site lists DIN-rail DC power SPDs and a dedicated PV-system SPD category, while technical material references IEC 61643-31 for PV DC-side selection.
The public product structure supports supplier qualification, but buyers need the exact model table, Ucpv, type, discharge ratings, Up, Iscpv, certificate, and replacement-module code before comparison with the other nine suppliers.
8. FEEO — Best for Solar DC Component Bundles
FEEO publishes solar DC breakers, fuses, isolators, connectors, and surge protective devices. Its official catalog identifies FSP-D40 Type 1+2 PV DC SPD configurations for 600V, 1000V, and 1500V, with In 20kA and Imax 40kA.
This portfolio may suit distributors and combiner-box assemblers buying several DC protection components. Verify certificate numbers, exact poles, protection mode, Up, Iscpv, label details, and whether evidence applies to the current production version.
9. Gandian/GA&DA — Best for Lightning-Protection Product Sourcing
Gandian/GA&DA’s official sites show solar DC surge protector products and describe a China-based lightning-protection and low-voltage manufacturing business. The range is relevant to buyers comparing specialist SPD suppliers rather than general solar equipment brands.
The English brand appears across more than one official domain and naming format. Before contracting, confirm the legal manufacturer, factory address, trademark, model code, certificate holder, bank beneficiary, and after-sales entity are consistent.
10. ETEK — Best for 600–1500V PV SPD Selection
ETEK publishes ETU5-T2-20PV Type 2 data for 600V, 800V, 1000V, and 1500V PV configurations, including plug-in cartridges, visual indication, and optional remote signaling. It also describes EKU5 Type 1+2 PV models with Ucpv choices of 500V, 1000V, or 1500V, Imax 40kA, and Iimp 6.25kA.
Buyers should distinguish ETU5 Type 2 from EKU5 Type 1+2, then verify poles, protection modes, Up, Iscpv, standard edition, and current certificate schedule for the ordered version.
How to Verify Technical Claims and Certificates
Create a document matrix with the legal manufacturer, complete model code, Ucpv, type, protection mode, In, Imax, Iimp, Up, Iscpv or SCCR, backup protection, standard edition, certificate number, certificate holder, and issuing body. The product label, datasheet, certificate schedule, approved drawing, and commercial quotation should identify the same configuration.
Do not treat ISO 9001 or another management-system certificate as product certification. Likewise, CE text on a website is not a substitute for a declaration and model list. Where TUV, UL, CB, CQC, or another approval is required, verify the record with the issuing organization and include the accepted evidence in the purchase contract.
Procurement Checklist Before Sending an RFQ
Provide maximum array open-circuit voltage at the lowest temperature, nominal voltage, grounding topology, inverter model, impulse withstand level, prospective short-circuit current, lightning protection zone, external lightning protection status, installation point, cable distance, required SPD type, target market, ambient limits, remote contact, quantity, and labeling requirements.
Ask every supplier to return a signed compliance table with explicit deviations. For samples, inspect markings, cartridge keying, terminals, status indication, remote-contact behavior, and traceability. For combiner-box installation, also coordinate heat rise, wiring, backup protection, earthing, and assembly verification. Comparable project inputs make technical and commercial quotations easier to evaluate.
| RFQ field | Why it matters | Evidence to request | Rejection trigger |
| Complete model code and Ucpv | Prevents voltage mismatch | Label drawing and datasheet | Model or voltage differs across files |
| Type, In, Imax, Iimp and Up | Confirms surge duty and coordination | Test report or certificate schedule | Values are generic brand claims |
| Iscpv/SCCR and backup protection | Addresses PV fault-current conditions | Installation manual and test evidence | Rating is absent or unsuitable |
| Certificate holder and scope | Connects approval to the ordered product | Current certificate and model annex | Applicant, model or factory does not match |
| OEM change control and traceability | Protects repeat-order consistency | Approved BOM, sample and notification procedure | Supplier may change parts without approval |
FAQ
Which standards should a solar PV DC SPD follow?
IEC 61643-31:2018 is the principal IEC product standard for SPDs on the DC side of PV installations up to 1500V. Project design may also reference lightning-protection, installation, and local electrical rules. Confirm that the ordered model and voltage appear in the supporting documents; a generic standard statement is not enough.
Does a 1500V PV system always require Type 1+2?
No. Voltage alone does not determine protection type. Type 1+2 is used where lightning-current components may enter or the specification requires 10/350 μs capability. Type 2 addresses induced surges and switching transients at appropriate locations. Use the lightning risk assessment, LPZ concept, external lightning protection, and installation point.
Why is BENY listed first?
BENY is listed first for a defined procurement scenario: projects comparing standalone 600–1500V PV DC SPDs and combiner-box integration under one supplier. Named models and parameters support that positioning. It is not a “best overall” or market-share claim, and buyers must still verify the exact model, certificate, protection mode, and production documents.
What documents should buyers request from all ten manufacturers?
Request the datasheet, model drawing, certificate and schedule, declaration, test report where available, installation instructions, backup-protection requirements, bill of materials for assemblies, warranty, quality-control plan, and batch traceability. For OEM versions, add label approval, change control, sample validation, packaging, and rules for notifying the buyer before component or design changes.
Sources
lIEC 61643-31 overview: https://webstore.iec.ch/en/publication/26931
lBENY BUD-S1500 datasheet: https://www.beny.com/wp-content/uploads/2021/03/1500V-DC-SPD-T12-BUD-S1500-Datasheet.pdf
lBENY BUD-1500 product page: https://www.beny.com/product-item/dc-spd-type2-up-to-1500v-bud-1500/
lProsurge SPV series
lCHINT Ex9UEP1+2
lLEEYEE 1500V PV DC SPD
lTHOR TRS3 Type 1+2
lHIITIO HSPD series
lTechwin PV SPD
lFEEO solar DC protection
lGandian solar DC SPD
lETEK ETU5 PV DC SPD datasheet