Standard delivery
£8 ex VAT · free over £200UK parcel delivery is £8 ex VAT, or free on orders over £200 ex VAT.
Heavier items may be charged at a weight-based or pallet rate, shown at checkout.
MERSEN FUSE 1000VDC 20A MIDGET PV FUSE HP10M20
Mersen HP10M20 gPV photovoltaic fuse rated at 20 A and 1000 V DC with ferrule terminals for clip mounting, designed for protecting photovoltaic strings and solar DC circuits.
£5.35
Why Choose the Mersen HP10M20 Photovoltaic Fuse?
The Mersen HP10M20 is a compact, high-performance gPV photovoltaic fuse link engineered specifically to protect modern solar photovoltaic systems against overloads, ground faults and short circuits. As part of the proven Mersen HelioProtection® HP10M series, it provides reliable protection for PV strings, combiner boxes, inverter DC inputs and battery charging systems operating at up to 1000 V DC.
Rated at 20 A, the HP10M20 has been developed for the unique electrical characteristics of photovoltaic installations, including the relatively low fault currents generated by solar arrays. Its enhanced fuse construction provides excellent resistance to continuous temperature and current cycling, helping maximise system reliability and service life.
Featuring ferrule terminals for clip mounting, the HP10M20 installs easily into compatible 10 × 38 mm photovoltaic fuse holders. It is suitable for residential, commercial and utility-scale renewable energy installations requiring dependable full-range gPV protection.
Key Advantages
- Purpose-designed gPV fuse for photovoltaic applications.
- 20 A rated current for PV string protection.
- 1000 V DC operating voltage.
- Low minimum breaking-current capability of approximately 1.35 × rated current.
- High 50 kA DC breaking capacity.
- Enhanced resistance to temperature and current cycling.
- Compact 10 × 38 mm format for easy installation.
- Complies with IEC 60269-6, UL 2579 and CSA requirements.
Key Features
- Mersen HelioProtection® HP10M series.
- Model: HP10M20.
- 20 A rated current.
- 1000 V DC rated voltage.
- gPV full-range photovoltaic characteristic.
- Ferrule terminals for clip mounting.
- 10 × 38 mm cylindrical fuse body.
- Suitable for PV strings and combiner boxes.
- Designed for inverter DC input protection.
- RoHS compliant construction.
Reliable Protection for Solar PV Systems
Photovoltaic arrays continue producing current whenever exposed to sunlight, making specialist DC overcurrent protection essential. The HP10M series has been specifically developed to interrupt the low fault currents found in photovoltaic systems safely while protecting cables, combiner boxes, inverter inputs and associated equipment.
The HP10M20 is ideal for protecting individual PV strings and other critical DC circuits in both grid-connected and off-grid renewable energy systems. Its durable construction supports long operating life even under repeated thermal cycling.
Typical Applications
- Photovoltaic string protection.
- PV combiner boxes.
- Solar inverter DC input protection.
- Battery charging systems.
- Commercial rooftop solar installations.
- Industrial photovoltaic systems.
- Utility-scale solar farms.
Technical Specifications
Tick the specs you need, then view products that match.
| Voltage | 1000 V | |
|---|---|---|
| Current | 20 A | |
| Device Type | Fuse link | |
| Fuse Type | PV (gPV) | |
| Fuse Class | gPV | |
| Manufacturer | Mersen | |
| Series | HelioProtection® HP10M | |
| Model | HP10M20 | |
| Reference number | P1018591 | |
| Product type | Photovoltaic fuse link | |
| Fuse characteristic | gPV | |
| Rated current | 20 A | |
| Rated voltage | 1000 V DC | |
| Frequency | 50 / 60 Hz | |
| Breaking capacity | 50 kA DC | |
| Fuse dimensions | 10 × 38 mm | |
| Connection type | Ferrule terminals | |
| Mounting type | Clip mounting | |
| Power loss at 70% rated current | 1.1 W | |
| Power loss at 80% rated current | 1.5 W | |
| Power loss at rated current | 2.8 W | |
| EAN / UPC | 782001429966 | |
| Compliance | RoHS compliant | |
| Standards | IEC 60269-6, UL 2579 and CSA C22.2 | |
| HS Code | 85361050 | |
| Country of Manufacture | Mexico |
Frequently Asked Questions
What is the Mersen HP10M20 used for?
The HP10M20 protects photovoltaic strings, combiner boxes, inverter inputs and other solar DC circuits against overloads and short circuits.
What are the voltage and current ratings?
The fuse is rated at 20 A and 1000 V DC.
What type of fuse is the HP10M20?
It is a gPV photovoltaic fuse specifically designed to provide full-range protection for solar photovoltaic installations.
How is the fuse mounted?
The HP10M20 features ferrule terminals and is designed for installation in compatible clip-mounted 10 × 38 mm fuse holders.
Which standards does this fuse comply with?
The HP10M20 complies with IEC 60269-6, UL 2579 and CSA C22.2 photovoltaic fuse standards.
Trusted by Solar Professionals Worldwide
Mersen HelioProtection® photovoltaic fuses are trusted by renewable energy engineers, panel builders and solar installers worldwide for dependable DC circuit protection in modern photovoltaic systems.
