Mersen A1025386 HelioProtection NH120 gPV photovoltaic fuse-link rated at 50 A and 1200 V DC for solar array cable, grouped-string, combiner-panel and inverter circuit protection.
£166.06
The Mersen A1025386 is a high-performance photovoltaic fuse-link designed to protect solar power circuits against overloads, reverse currents and short-circuit faults. Part of the Mersen HelioProtection® photovoltaic protection range, it provides dependable full-range protection for high-voltage DC equipment used in commercial, industrial and utility-scale solar installations.
This fuse features a specialised gPV operating characteristic developed for the distinctive electrical conditions found in photovoltaic systems. It can safely interrupt the sustained, relatively low fault currents produced by solar arrays, helping to protect cables, grouped strings, combiner panels and inverter input circuits from thermal damage.
With a rated current of 50 A, a rated voltage of 1200 V DC and an NH120 square-body format, the A1025386 is suitable for high-capacity photovoltaic circuits. Its robust construction supports reliable operation in installations exposed to repeated load and temperature cycling.
Photovoltaic arrays can produce sustained DC fault currents that require protective devices specifically designed for solar applications. The Mersen A1025386 provides gPV full-range protection, enabling it to respond to both lower-level overcurrents and severe short-circuit conditions.
By isolating faulty circuits, the fuse helps reduce the risk of cable overheating, equipment damage and secondary faults within photovoltaic installations. Its 1200 V DC rating makes it suitable for modern solar arrays operating at elevated system voltages.
| Current | 50 A |
|---|---|
| Voltage | 200 V |
| Manufacturer | Mersen |
| Range | HelioProtection® |
| Model | A1025386 |
| Product type | Photovoltaic fuse-link |
| Rated current | 50 A |
| Rated voltage | 1200 V DC |
| Operating characteristic | gPV |
| Current type | DC |
| Fuse size | NH120 |
| Body format | Square body |
| Primary application | Photovoltaic circuit protection |
| Protection range | Full-range overload and short-circuit protection |
| Installation type | Compatible photovoltaic fuse base |
| EAN | 3605340526448 |
The Mersen A1025386 is used to protect photovoltaic cables, grouped solar strings, combiner panels and associated DC equipment against overloads and short-circuit faults.
The A1025386 has a rated current of 50 A.
This photovoltaic fuse is rated for operation at up to 1200 V DC.
A gPV fuse provides full-range protection specifically for photovoltaic circuits, covering both overload currents and short-circuit faults.
The A1025386 uses an NH120 square-body format and must be installed in a compatible photovoltaic fuse base.
Mersen HelioProtection® fuse-links are widely used by solar installers, panel manufacturers and renewable energy engineers to provide dependable protection for high-voltage photovoltaic systems.
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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...