Mersen D1003999 DC121GPV12C200E gPV photovoltaic fuse rated at 200A and 1200V DC for commercial and utility-scale solar power protection.
£219.78
The Mersen D1003999 is a high-performance gPV photovoltaic fuse designed to provide reliable overcurrent protection for modern solar power installations operating at up to 1200 V DC. As part of the trusted Mersen HelioProtection® DC121 series, this fuse is specifically engineered to protect photovoltaic strings, combiner boxes and inverter DC inputs against overloads and short circuits.
Designed to comply with IEC 60269-1 and IEC 60269-6 gPV standards, the D1003999 delivers dependable fault interruption under demanding DC operating conditions. Its robust square body construction ensures long service life whilst helping safeguard valuable photovoltaic modules, cables and associated equipment.
With a 200 A current rating, 1200 V DC voltage rating and size 121 format, the Mersen D1003999 is ideally suited for commercial and utility-scale photovoltaic systems requiring dependable circuit protection.
Photovoltaic fuse-links provide critical protection against overloads and short circuits within DC solar systems. Selecting the correct gPV fuse helps protect PV modules, combiner boxes, inverters and associated cabling whilst improving the reliability and safety of renewable energy installations.
The Mersen HelioProtection® DC121 range has been engineered specifically for photovoltaic applications, offering dependable protection for commercial, industrial and utility-scale solar power systems.
| Current | 200 A |
|---|---|
| Voltage | 200 V |
| Manufacturer | Mersen |
| Series | HelioProtection® DC121 |
| Manufacturer part number | D1003999 |
| Catalogue number | DC121GPV12C200E |
| Product type | gPV photovoltaic fuse-link |
| Rated current | 200 A |
| Rated voltage | 1200 V DC |
| Fuse characteristic | gPV |
| Fuse size | 121 |
| Standards | IEC 60269-1, IEC 60269-6 |
| Application | Solar photovoltaic protection |
| Body style | Square body fuse-link |
| EAN | 3605340478631 |
The Mersen D1003999 is a gPV fuse designed to protect photovoltaic DC circuits against overloads and short circuits.
This fuse has a 200 A current rating.
The D1003999 is designed for photovoltaic systems operating at up to 1200 V DC.
The fuse complies with IEC 60269-1 and IEC 60269-6 standards for photovoltaic fuse-links.
It is commonly installed in photovoltaic combiner boxes, inverter DC inputs and other high-voltage solar power distribution equipment.
Mersen HelioProtection® photovoltaic fuses are trusted worldwide by solar installers, EPC contractors and renewable energy engineers for delivering dependable protection in commercial and utility-scale photovoltaic installations.
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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...