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MERSEN FUSE 1000VDC 7A MIDGET PV FUSE HP10M7
Mersen HP10M7 HelioProtection gPV photovoltaic fuse rated at 7 A and 1000 V DC, with a compact 10 x 38 mm body and ferrule terminals for PV string protection.
Why Choose the Mersen HP10M7 Photovoltaic Fuse?
The Mersen HP10M7 is a compact, high-performance gPV photovoltaic fuse link specifically developed to protect solar photovoltaic circuits against line faults, ground faults and damaging overcurrents. As part of the proven Mersen HelioProtection® HP10M series, it provides dependable protection for PV string wiring, combiner boxes, inverter inputs and associated DC equipment.
Rated at 7 A and 1000 V DC, the HP10M7 is engineered for the relatively low fault-current conditions produced by photovoltaic arrays. Its full-range gPV operating characteristic and low minimum breaking-current capability allow safe circuit interruption while helping protect solar modules, cables, connectors and connected equipment.
The HP10M7 features a compact 10 × 38 mm cylindrical body with ferrule terminals for installation in compatible clip-mounted fuse holders. Its robust construction withstands continuous temperature and current cycling, supporting reliable long-term operation in grid-connected and off-grid photovoltaic installations.
Key Advantages
- Purpose-designed gPV protection for photovoltaic circuits.
- 7 A rated current for low-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 DC 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.
- 7 A rated current.
- 1000 V DC rated voltage.
- gPV full-range photovoltaic fuse characteristic.
- 10 × 38 mm cylindrical fuse body.
- Ferrule terminals for clip mounting.
- Designed for low photovoltaic fault-current interruption.
- Suitable for PV string and combiner-box protection.
- Enhanced thermal and current cycling resistance.
- Suitable for grid-connected and off-grid PV systems.
Reliable Protection for Photovoltaic String Circuits
Photovoltaic arrays continue producing DC current whenever sufficient light is available, including during certain fault conditions. Specialist gPV fuses are therefore required to disconnect faulty strings before excessive reverse current or short-circuit current damages modules, cables, connectors or inverter equipment.
The Mersen HP10M7 combines low fault-current interruption capability with a high DC breaking capacity. Its compact format and durable construction make it well suited to continuous operation in residential, commercial, industrial and utility-scale photovoltaic systems.
Typical Applications
- Photovoltaic string circuit protection.
- PV combiner and array junction boxes.
- Solar inverter DC input protection.
- In-line photovoltaic module protection.
- Battery charge controllers.
- Commercial and industrial solar installations.
- Grid-connected and off-grid renewable energy systems.
Technical Specifications
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| Voltage | 1000 V | |
|---|---|---|
| Current | 7 A | |
| Device Type | Fuse link | |
| Fuse Type | PV (gPV) | |
| Fuse Class | gPV | |
| Manufacturer | Mersen | |
| Series | HelioProtection® HP10M | |
| Model | HP10M7 | |
| Product type | Photovoltaic fuse link | |
| Fuse utilisation category | gPV | |
| Rated current | 7 A | |
| Rated voltage | 1000 V DC | |
| Current type | DC | |
| Breaking capacity | 50 kA DC | |
| Minimum breaking-current capability | Approx. 1.35 × rated current | |
| Fuse format | Cylindrical midget fuse | |
| Fuse dimensions | Approx. 10 × 38 mm | |
| Terminal type | Ferrule | |
| Mounting method | Clip mounting in a compatible fuse holder | |
| Protection application | Photovoltaic string wiring | |
| Standards | IEC 60269-6 and UL 2579 | |
| Compliance | RoHS compliant |
Frequently Asked Questions
What is the Mersen HP10M7 used for?
The Mersen HP10M7 protects photovoltaic string wiring, combiner boxes, inverter inputs and other solar DC circuits against line faults, ground faults and damaging overcurrents.
What are the current and voltage ratings of the HP10M7?
The fuse has a rated current of 7 A and a rated operating voltage of 1000 V DC.
What size is the Mersen HP10M7?
The HP10M7 has a compact cylindrical body measuring approximately 10 × 38 mm.
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 HP10M7 installed?
The fuse has 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.
