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.
£8.23
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.
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.
| Current | 20 A |
|---|---|
| Voltage | 000 V |
| 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 |
The HP10M20 protects photovoltaic strings, combiner boxes, inverter inputs and other solar DC circuits against overloads and short circuits.
The fuse is rated at 20 A and 1000 V DC.
It is a gPV photovoltaic fuse specifically designed to provide full-range protection for solar photovoltaic installations.
The HP10M20 features ferrule terminals and is designed for installation in compatible clip-mounted 10 × 38 mm fuse holders.
The HP10M20 complies with IEC 60269-6, UL 2579 and CSA C22.2 photovoltaic fuse standards.
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.
● Service Agreements
Credit Accounts
Our service agreements are built to support long term procurement relationships. By working closely with engineering teams and procurement departments, we help streamline purchasing processes while ensuring consistent access to critical components and sourcing support when it matters most.
● frequently asked questions
At Led Controls Ltd we help engineers source the right automation and control gear with confidence. below are quick answers to what we are asked most often.
We supply all leading manfacturers in our industry. we offer next day delivery on most poplour products.
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
● latest blog
LED Controls is a specialist distributor of factory automation and industrial controls, supplying OEMs, machine builders, panel builders and end users throughout the UK and worldwide. As a trusted UK distributor for many of the world’s leading automation manufacturers, we provide industrial control products, technical expertise and bespoke automation solutions backed by outstanding customer service.
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...