Select the fuse current according to the photovoltaic module maximum series fuse rating, expected string operating current, conductor capacity and complete overcurrent-protection design. The selected fuse rating must not be chosen solely from the maximum rating of the associated fuse holder.
DC Fuse
1000V DC gPV Fuse 10 × 38 mm for PV String Protection – UH-DG-FU01
Model UH-DG-FU01
UH-DG-FU01 is a 1000V DC gPV fuse link designed for photovoltaic string and array protection. The 10 × 38 mm cylindrical series is available in 10A, 15A, 20A, 25A and 30A ratings and is designed for use with compatible PV fuse holders in combiner boxes and other DC protection assemblies.
- 1000V DC Rating
- 10 × 38 mm gPV
- Five Current Ratings
Rated Voltage
1000V DC
Rated Current
1 - 30A
Utilization Category
gPV
Application
Photovoltaic String Protection
Fuse Type
Cylindrical Fuse Link
Fuse Size
10 × 38 mm
Select the fuse rating according to the PV string design and never replace the fuse while the DC circuit is under load.
Overview
Product Overview
UH-DG-FU01 is a 10 × 38 mm gPV fuse series designed to protect photovoltaic strings and DC array circuits against overcurrent and fault conditions. Five current ratings are available—10A, 15A, 20A, 25A and 30A—allowing the fuse link to be selected according to the PV module, string configuration and protection requirements of the installation.
The fuse series is rated at 1000V DC and is intended for use with compatible 10 × 38 mm photovoltaic fuse holders, including the UHCCY DC fuse-holder platform. Its cylindrical format allows simple replacement during maintenance while keeping the fuse holder permanently installed in the electrical enclosure.
Features
Key Product Features
1000V DC Rating
10 × 38 mm gPV
Five Current Ratings
gPV Photovoltaic Protection
UH-DG-FU01 is designed as a gPV fuse link for photovoltaic DC string and array protection applications.
Five Current Ratings
The product series is available in 10A, 15A, 20A, 25A and 30A versions for different photovoltaic circuit protection requirements.
1000V DC Rating
The fuse link is rated for 1000V DC photovoltaic applications when used within a correctly designed DC protection circuit.
Standard 10 × 38 mm Format
The cylindrical 10 × 38 mm format allows UH-DG-FU01 to be used with compatible modular PV fuse holders and other correctly rated fuse bases.
Replaceable Fuse Link
The cartridge-style construction allows the fuse link to be replaced independently of the fuse holder after safe isolation of the DC circuit.
PV String Protection
The fuse is intended for photovoltaic string and array circuits where overcurrent protection is required to limit fault and reverse-current effects.
Technical Data
Technical Specifications
Review the complete technical parameters for product selection and project verification.
Electrical Characteristics
| Parameter | Value |
|---|---|
| Rated Voltage | 1000V DC |
| Rated Current | 1 - 30A |
| Utilization Category | gPV |
| Application | Photovoltaic String Protection |
| Voltage Type | DC |
| Fuse Type | Cylindrical Fuse Link |
Mechanical Characteristics
| Parameter | Value |
|---|---|
| Fuse Size | 10 × 38 mm |
| Nominal Diameter | 10 mm |
| Nominal Length | 38 mm |
| Mounting | Compatible 10 × 38 mm Fuse Holder |
| Replaceable | Yes |
Construction
| Parameter | Value |
|---|---|
| Body Type | Ceramic Cylindrical Fuse Body |
| End Caps | Metal Ferrule |
| Product Format | Cartridge Fuse Link |
Selection
Choose the Correct UH-DG-FU01 Fuse Rating
| Variant | Rated Current | Rated Voltage | Fuse Size | Category | Typical Selection Basis |
|---|---|---|---|---|---|
| UH-DG-FU01-10A | 10A | 1000V DC | 10 × 38 mm | gPV | Lower-current PV strings |
| UH-DG-FU01-15A | 15A | 1000V DC | 10 × 38 mm | gPV | PV string protection |
| UH-DG-FU01-20A | 20A | 1000V DC | 10 × 38 mm | gPV | PV string protection |
| UH-DG-FU01-25A | 25A | 1000V DC | 10 × 38 mm | gPV | Higher-current PV strings |
| UH-DG-FU01-30A | 30A | 1000V DC | 10 × 38 mm | gPV | Higher-current PV strings |
Mechanical Data
Dimensions
UH-DG-FU01 uses the standard 10 × 38 mm cylindrical fuse format across all five current ratings. This common mechanical size allows the 10A, 15A, 20A, 25A and 30A variants to use the same compatible fuse-holder platform.
| Dimension | Value |
|---|---|
| Diameter | 10 mm |
| Length | 38 mm |
| Fuse Format | 10 × 38 mm |
| Units | mm |
Applications
Where This Product Is Used
PV Combiner Boxes
Connector assemblies support DC cable connections between PV strings, combiner equipment and inverter inputs.
Solar PV Systems
Protection, connectivity and distribution components for photovoltaic arrays, string circuits and related solar DC systems.
UH-DG-FU01 is intended for photovoltaic string protection in PV combiner boxes, DC distribution equipment and solar array protection assemblies. The required current rating should be selected from the available 10A, 15A, 20A, 25A or 30A versions according to the PV module maximum series fuse rating, expected string current and complete DC circuit design.
System Components
Compatible Accessories
Products selected here are intended to be used together with this product.
1000V DC PV Fuse Holder for 10 × 38 mm Fuse – UH-DG-FH01
UH-DG-FH01 is a 1000V DC photovoltaic fuse holder designed for 10 × 38 mm PV fuse links. Rated up to 32A, it supports 1P, 2P, 3P and 4P configurations with DIN-rail mounting, 1–10 mm² copper conductors and an optional LED indicator version for visual fuse status identification.
View ProductImportant Notes
Select the fuse rating according to the PV string design and never replace the fuse while the DC circuit is under load.
FAQ
Frequently Asked Questions
What current ratings are available for UH-DG-FU01?
UH-DG-FU01 is available in 10A, 15A, 20A, 25A and 30A ratings. All versions use the same 1000V DC, 10 × 38 mm gPV fuse format.
What is a gPV fuse?
A gPV fuse is a photovoltaic fuse-link category intended for PV string and array protection. The applicable fuse rating should be selected according to the electrical characteristics and protection requirements of the PV circuit.
Which fuse holder should be used?
UH-DG-FU01 is designed for compatible 10 × 38 mm photovoltaic fuse holders. The UH-DG-FH01 – 1000V DC PV Fuse Holder is the matching UHCCY fuse-holder platform and is rated up to 32A.
Is UH-DG-FU01 suitable for photovoltaic combiner boxes?
Yes. The 10 × 38 mm gPV fuse format is commonly used for photovoltaic string protection in combiner boxes and related DC protection assemblies. The selected fuse rating and complete installation must match the electrical design of the PV system.
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