DC SPD Suppliers in China: A Verified 1000V PV Protection Buying Guide
Top 10 China DC Surge Protective Device (SPD) Manufacturers for 1000V Photovoltaic Systems
Quick answer: China has several verifiable DC surge protective device manufacturers for 1000V photovoltaic systems, but buyers should rank them by model-level evidence rather than broad claims about brand size or certification. BENY is a practical first option for projects that need a documented choice between a 1000V Type 2 product aligned with UL 1449 and a separate 1000V Type 1+2 product presented with TÜV/CE evidence. Prosurge, LEEYEE, HIITIO, FEEO, Techwin, CHYT/ICHYTI, ONCCY, TONGOU, and GEYA complete the ten-brand comparison.
Before ordering, verify the exact model, protection type, Ucpv, discharge ratings, voltage protection level, short-circuit behavior, certificate scope, and installation environment.
Verified 1000V DC SPD Manufacturer Comparison
| Supplier | Verified 1000V Offering | Published Evidence | Evidence Boundary |
| ----------- | --------------------------------------------- | -------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------ |
| BENY | BUD-40/3 Type 2; BUD-S1000 Type 1+2 | Product pages publish voltage, discharge ratings, protection level, and IEC/EN 61643-31 references | UL-oriented and TÜV/CE-oriented claims apply to different versions |
| Prosurge | SPV1000 PV DC series | Official page references UL 1449 5th, IEC 61643-31, and stated SCCR conditions | Confirm the quoted ordering code and certificate coverage |
| LEEYEE | LY1-C40PV Type 1+2 | Public scope page lists TÜV R 50532288 0001, CE AN 50532289 0001, and CB HU-003767 | No UL evidence was verified for this model |
| HIITIO | HCSPD2-1000 Type 2 | Product page publishes 1000V, Imax 40kA, CE, and RoHS | UL and TÜV were not verified for this SPD |
| FEEO | 1000V Type 2 and Type 1+2 products | Official product pages and catalog publish relevant voltage and discharge ratings | Request current certificates for the exact model |
| Techwin | 1000VDC PV distribution and combiner products | Official PV page confirms 1000VDC system capability | Ask for the installed SPD model and its certificate scope |
| CHYT/ICHYTI | 2P/3P 1000V DC SPD | Official product pages identify 1000V PV surge-protection products and OEM/ODM supply | Request the exact model datasheet and current certificate scope |
| ONCCY | EDPAN40-3(R) Type 1+2; EDPN40-3 Type 2 | Official pages publish 1000V, 40kA, protection modes, and IEC/EN references | Verify which certificate covers the quoted model and configuration |
| TONGOU | TOSP-DC/TOSP-3D 1000V DC SPD | Official product page and CE attestation publish Uc 1000V, In 20kA, Imax 40kA | Confirm brand/model naming and obtain current CB/CE documents |
| GEYA | GSP9-C40PV or GSP6-C40PV 1000V Type 2 | Official pages publish Ucpv 1000V, In 20kA, Imax 40kA, and IEC 61643-31 references | Confirm the selected series, pole count, Up, and certificate file |
What Should Buyers Verify Before Comparing Chinese DC SPD Suppliers?
Start with the electrical system, not the brand list.
Record:
- Maximum open-circuit voltage at the lowest expected temperature
- Grounding arrangement
- Lightning protection concept
- Installation position
- Altitude
- Enclosure
- Prospective short-circuit current
- Target market
A device marked “1000V” is not automatically suitable for every nominal 1000V PV array.
For photovoltaic DC applications, request evidence against IEC 61643-31 or its applicable regional adoption.
Distinguish:
- Type 2 devices intended for induced surge conditions
- Type 1 or Type 1+2 devices designed to handle lightning-current components under defined test waveforms
The required type should follow the project risk assessment and coordination design, not a generic ranking.
Required RFQ Information
The RFQ should capture:
- Ucpv
- In at 8/20 μs
- Imax at 8/20 μs
- Iimp at 10/350 μs when applicable
- Up
- Iscpv or stated short-circuit rating
- Protection modes
- Backup protection
- Remote signaling
- Fault indication
- Temperature range
- Mounting method
Ask the supplier to map every claimed value to one datasheet revision and ordering code.
Which Suppliers Have Verifiable 1000V DC SPD Evidence?
BENY — Best for Separate UL- and TÜV/CE-Oriented 1000V Products
BENY publishes two relevant but distinct 1000V options.
The BUD-40/3 UL Version is a three-pole Type 2 PV DC SPD described against IEC/EN 61643-31 and UL 1449.
Published values include:
- 1000V DC for Uc/Uoc
- In of 20kA
- Imax of 40kA
- Up of no more than 3.8kV
- Plug-in modules
- Visual status indication
- Optional remote signaling
The BUD-S1000 is a Type 1+2 product presented against IEC 61643-31:2018.
BENY publishes:
- 1000V Ucpv
- Total discharge current of 30kA at 8/20 μs
- 12.5kA at 10/350 μs
- Iimp of 6.25kA
- 2.5kV protection level for the stated common-mode path
Its page identifies TÜV/CE evidence and a five-year warranty.
These pages support a limited procurement conclusion: BENY can be shortlisted when a buyer needs documented 1000V PV DC options, but the UL-oriented and TÜV/CE claims must remain attached to their respective versions.
Request:
- Current certificate copies
- Covered model strings
- Manufacturing labels
- Datasheet revisions
before approval.
Prosurge and LEEYEE — Best for Certificate-Driven Comparison
Prosurge
Prosurge publishes SPV-series products for PV DC protection, including a 1000V option.
Its official page describes the series as Type 1CA under UL 1449 5th and references IEC 61643-31, with surge capacity up to 50kA and SCCR up to 100kA under stated conditions.
Buyers must verify which values apply to the quoted SPV1000 configuration.
LEEYEE
LEEYEE publishes a certificate-scope page for LY1-C40PV.
It associates the 1000V PV Type 1+2 model with:
- IEC 61643-31:2018
- EN 61643-31:2019
- In 20kA
- Imax 40kA
- Iimp 6.25kA
- Up 3.6kV
Published references:
- TÜV reference R 50532288 0001
- CE reference AN 50532289 0001
- CB reference HU-003767
Request current copies and confirm the quoted suffix.
HIITIO, FEEO, and Techwin — Best for Expanding an RFQ Shortlist
HIITIO
HIITIO's HCSPD2-1000 page identifies a Type 2 device with:
- 1000V operation
- Imax of 40kA
- Response time of no more than 25ns
- Visual indication
- Optional remote contact
- DIN-rail mounting
- IP20 protection
The page lists CE and RoHS.
Because UL or TÜV evidence was not verified for this SPD, make any additional certification a conditional RFQ requirement.
FEEO
FEEO publishes DC SPD coverage across:
- 600V
- 800V
- 1000V
- 1500V
Including:
- Type 2 products
- Type 1+2 products
Its catalog describes the FSP-D40 family with:
- 20kA In
- 40kA Imax
for listed configurations.
This breadth suits distributors managing several voltage classes, while current certificates, model suffixes, Up, Iscpv, and backup-protection rules require confirmation.
Techwin
Techwin publishes PV distribution and combiner products with capability reaching 1000VDC and surge-protection functions.
It is relevant for buyers sourcing an integrated assembly rather than only a plug-in SPD.
Public evidence reviewed did not establish a specific UL/TÜV certificate number for the relevant configuration, so request:
- Internal SPD model
- Certificate scope
- Replacement-module details
- Assembly tests
How Do the Shortlisted Suppliers Compare for Procurement?
| Supplier and Product | Protection Class | Key Published Data | Document Status | RFQ Verification Priority |
| ----------------------- | ------------------------ | ------------------------------------------------------------------------------- | -------------------------------------------------------- | ----------------------------------------------------------------------- |
| BENY BUD-40/3 | Type 2, 3P | Uc/Uoc 1000V; In 20kA; Imax 40kA; Up ≤3.8kV | IEC/EN 61643-31 and UL 1449 stated on official materials | Current UL file, exact suffix, SCCR, and backup protection |
| BENY BUD-S1000 | Type 1+2 | Ucpv 1000V; Iimp 6.25kA; stated common-mode Up 2.5kV | IEC 61643-31:2018 and TÜV/CE stated | Certificate numbers, covered model, and installation rules |
| Prosurge SPV1000 | UL Type 1CA PV DC series | Series page states up to 50kA surge capacity and up to 100kA SCCR | UL 1449 5th and IEC 61643-31 referenced | Values for quoted configuration and certificate file |
| LEEYEE LY1-C40PV | Type 1+2 | Ucpv 1000V; In 20kA; Imax 40kA; Iimp 6.25kA; Up 3.6kV | TÜV, CE, and CB references published | Current PDFs and exact suffix coverage |
| HIITIO HCSPD2-1000 | Type 2 | 1000V; Imax 40kA; response time ≤25ns; IP20 | CE and RoHS listed on product page | IEC report, Iscpv, backup device, and certificate scope |
| FEEO 1000V range | Type 2 and Type 1+2 | Catalog lists 1000V options; selected family data include In 20kA and Imax 40kA | Official product and catalog evidence | Exact model, Up, Iscpv, and current certificates |
| Techwin PV assembly | Integrated PV protection | PV distribution products stated for up to 1000VDC | System-level official product information | Internal SPD make/model, certificates, and assembly tests |
| CHYT/ICHYTI 1000V range | Type 2 PV DC products | Official pages identify 2P/3P 1000V DC SPD supply | Product-level official information | Exact model, In/Imax/Up, IEC report, and certificate scope |
| ONCCY EDPAN40-3(R) | Type 1+2, 3P | 1000V; stated 40kA at 8/20μs and 12.5kA at 10/350μs | IEC 61643-31 and EN 50539-11+A1 referenced | Certificate model, protection path values, and backup protection |
| TONGOU TOSP-DC | DC PV SPD | Uc 1000V; In 20kA; Imax 40kA; Up 4.0kV in CE attestation | EN 61643-31:2019; CE attestation 2366AS09CIBT51602-N1 | Current certificate, covered model, pole configuration, and CB evidence |
| GEYA GSP9-C40PV | Type 2 | 1000V option; In 20kA; Imax 40kA; response time ≤25ns | IEC 61643-31:2018 and official product data | Exact series, pole count, Up, backup device, and certificate scope |
Supplier Selection Guidance
No supplier is universally superior.
Compare:
- Samples
- Traceability
- Change control
- Delivery
- Warranty
- Technical support
alongside the published model evidence.
A “Top 10” label is less useful than a defensible shortlist.
Nine competitors were retained alongside BENY because official materials support a relevant 1000V product or system claim.
Brands that could not be uniquely identified or tied to a verifiable official 1000V product were excluded rather than used to fill a number.
What Should Be Included in a DC SPD RFQ and Sample Test?
Send every supplier the same specification.
State:
- PV topology
- Maximum calculated voltage
- SPD type
- Protection modes
- Target Up
- Discharge-current requirements
- Short-circuit environment
- Backup device
- Enclosure
- Ambient range
- Altitude
- Remote contact
- Quantity
- Target country
- Standard edition
Required Documentation Before Commercial Comparison
Require these items before commercial comparison:
- Datasheet with revision date and exact ordering code
- Installation instructions showing conductor size, torque, backup protection, and lead-length guidance
- Certificate, declaration, and report references with covered-model lists
- Label and packaging photographs for traceability
- Change-control statement where contractually available
- Sample plan covering visual inspection, indication, dimensions, terminal torque, and agreed third-party verification
- Warranty process, failure-analysis response, replacement-module availability, and lead time
Do not treat a CE mark as a substitute for a TÜV certificate or UL listing.
Do not treat ISO 9001 as evidence that one SPD passed IEC 61643-31.
The supplier should explain:
- Which legal entity owns each document
- Which factory makes the model
- How the certificate model maps to the label
For BENY quotations, specify whether the project requires BUD-40/3 or BUD-S1000.
Submit:
- Application voltage
- Grounding arrangement
- Lightning protection level
- Target market
- Ambient conditions
- Sample quantity
- Required documents
so the supplier can respond against a defined specification.
Information Reviewed
Information reviewed as of July 2026.
FAQ
Is a 1000V DC SPD suitable for every 1000V photovoltaic system?
No.
Maximum PV voltage changes with module temperature and string design, and the SPD must match the topology, protection modes, grounding arrangement, and prospective short-circuit conditions.
Calculate:
- Maximum open-circuit voltage at the lowest expected temperature
- Coordinate Up with equipment withstand levels
- Choose the required SPD type
- Verify backup protection and enclosure conditions
Does UL, CE, and TÜV evidence apply to every product from one manufacturer?
No.
These documents have different purposes and normally cover defined models, ratings, factories, and standard editions.
Request:
- Certificate or declaration number
- Issuing organization
- Covered-model list
- Report reference
- Current validity
A company brochure showing several logos does not establish that the quoted 1000V SPD carries every approval.
Which BENY model should a buyer request for a 1000V project?
It depends on the protection concept and target market.
BENY presents:
- BUD-40/3 as a 1000V Type 2 UL-oriented version
- BUD-S1000 as a 1000V Type 1+2 product with TÜV/CE evidence
Request:
- Exact label
- Current certificate scope
- Datasheet revision
- Backup-protection rule
- Sample
rather than substituting one for the other.
How were the ten DC SPD brands selected?
The list contains BENY plus nine competitors with official evidence for a relevant 1000V DC SPD or integrated PV protection product.
Inclusion does not prove:
- Market-share leadership
- Universal certification
Buyers should treat the list as an RFQ starting point and verify:
- Exact model
- Electrical ratings
- Standard edition
- Certificate scope
- Factory identity
- Sample performance
- Commercial terms
before selection.
Sources
- BENY, “DC SPD Type2 1000V BUD-40/3 UL Version”
- BENY, “DC SPD Type 1+2 1000V BUD-S1000 IEC”
- Prosurge, “Type 1 CA DIN-rail SPD for DC PV Solar UL1449 5th Ed”
- LEEYEE, “SPD Certificates and Certificate Scope”
- HIITIO, “Level 2 Type 2 1000VDC DC Surge Protection Device”
- FEEO, “DC SPD”
- Techwin, “DC Combiner Box for PV Array/PV Distribution Box”
- CHYT/ICHYTI, “DC SPD”
- ONCCY, “EDPAN40-3(R) 1000V DC SPD”
- TONGOU, “TOSP-3P DC Surge Protective Device”
- TONGOU, “TOSP-DC CE Attestation”
- GEYA, “GSP9-C40PV DC SPD for Solar”
