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MERSEN FUSE 1000VDC 25A MIDGET PV FUSE HP10M25
Mersen HP10M25 HelioProtection gPV photovoltaic fuse rated at 25 A and 1000 V DC, with a compact 10.4 x 38.1 mm body and ferrule terminals for PV string protection.
£5.56
Why Choose the Mersen HP10M25 Photovoltaic Fuse?
The Mersen HP10M25 is a compact, high-performance gPV photovoltaic fuse link engineered specifically to protect solar PV string circuits against ground faults, line faults and damaging overcurrents. As part of the proven Mersen HelioProtection® HP10M series, it is designed for reliable operation in grid-connected and off-grid photovoltaic systems.
Rated at 25 A and 1000 V DC, the HP10M25 provides full-range photovoltaic protection under the distinctive low fault-current conditions produced by solar arrays. Its minimum breaking-current capability of approximately 1.35 times the rated current enables safe circuit interruption while helping protect PV modules, wiring, connectors, combiner boxes and inverter inputs.
The HP10M25 features a compact 10.4 × 38.1 mm cylindrical body with tin-plated copper ferrule terminals for clip mounting. Its enhanced construction withstands continuous temperature and current cycling, supporting long service life in demanding residential, commercial, industrial and utility-scale photovoltaic installations.
Key Advantages
- Purpose-designed gPV fuse protection for photovoltaic circuits.
- 25 A rated current for higher-current PV string applications.
- 1000 V DC voltage rating for modern solar installations.
- Low minimum breaking-current capability of approximately 1.35 × In.
- High 50 kA breaking capacity.
- Robust construction withstands repeated temperature and current cycling.
- Compact cylindrical format for space-efficient installation.
- Ferrule terminals enable straightforward clip mounting.
Key Features
- Mersen HelioProtection® HP10M series.
- 25 A rated current.
- 1000 V DC rated voltage.
- gPV photovoltaic fuse characteristic.
- 10.4 × 38.1 mm cylindrical fuse body.
- Tin-plated copper ferrule terminals.
- Clip-mounted installation.
- 50 / 60 Hz frequency rating.
- Suitable for grid-connected and off-grid PV systems.
- RoHS-compliant construction.
Reliable Protection for Photovoltaic String Circuits
Photovoltaic arrays continue generating DC current whenever sufficient light is available, including during certain electrical fault conditions. Specialist gPV fuses are therefore required to interrupt low-level reverse currents and high short-circuit currents before they damage modules, cables, connectors or connected equipment.
The Mersen HP10M25 combines low fault-current interruption capability with a high breaking capacity. Its durable construction is designed to tolerate the continuous temperature and current cycling found in industrial rooftop and utility-scale photovoltaic systems, helping improve installation safety and longevity.
Typical Applications
- Photovoltaic string circuit protection.
- PV combiner and array junction boxes.
- Solar inverter DC input protection.
- Commercial rooftop photovoltaic systems.
- Industrial solar installations.
- Utility-scale photovoltaic arrays.
- Grid-connected and off-grid renewable energy systems.
Technical Specifications
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| Voltage | 1000 V | |
|---|---|---|
| Current | 25 A | |
| Device Type | Fuse link | |
| Fuse Type | PV (gPV) | |
| Fuse Class | gPV | |
| Manufacturer | Mersen | |
| Series | HelioProtection® HP10M | |
| Model | HP10M25 | |
| Item number | HP10M25 | |
| Product type | Photovoltaic fuse link | |
| Product group | Special-purpose fuses | |
| Fuse class | Photovoltaic | |
| Speed / characteristic | gPV | |
| Rated current | 25 A | |
| Rated voltage | 1000 V DC | |
| Current type | DC | |
| Frequency | 50 / 60 Hz | |
| Breaking capacity | 50 kA | |
| Minimum breaking-current capability | Approx. 1.35 × rated current | |
| Mounting type | Clip mounting | |
| Terminal type | Ferrule | |
| Terminal material | Tin-plated copper | |
| Body / insulating material | GMG | |
| Product diameter | 10.4 mm | |
| Product length | 38.1 mm | |
| Product weight | Approx. 0.0091 kg | |
| EAN / UPC | 782001436865 | |
| Sell-pack quantity | 10 | |
| Compliance | RoHS compliant | |
| HS Code | 85361050 | |
| Country of Manufacture | Mexico |
Frequently Asked Questions
What is the Mersen HP10M25 used for?
The Mersen HP10M25 protects photovoltaic string wiring, combiner boxes, inverter inputs and other solar DC circuits against ground faults, line faults and damaging overcurrents.
What are the current and voltage ratings of the HP10M25?
The fuse has a rated current of 25 A and a rated operating voltage of 1000 V DC.
What size is the Mersen HP10M25?
The HP10M25 has a compact cylindrical body measuring approximately 10.4 mm in diameter and 38.1 mm long.
What does the gPV characteristic mean?
The gPV characteristic identifies a full-range fuse specifically designed to protect photovoltaic circuits against low-level overcurrents and high short-circuit currents.
How is the HP10M25 installed?
The fuse has tin-plated copper ferrule terminals and is installed in a compatible clip-mounted photovoltaic fuse holder rated for 1000 V DC operation.
Trusted by Solar Installation Professionals
Mersen HelioProtection® photovoltaic fuses are widely used by solar installers, renewable energy engineers and panel builders to provide dependable DC circuit protection in modern photovoltaic systems.
