Mersen R1048677 HelioProtection photovoltaic fuse-link with a 350 A rating, 1250 V DC rating, gPV operating class, NH3L format and DIN-type bolted blades for direct mounting.
Replacement product
MERSEN FUSE 1500VDC NH3L gPV 350A K bolted HP15NH3LGPV350B
SKU: Y1048683
£306.95 ex VAT
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£224.29
The Mersen R1048677 is a high-performance NH3L photovoltaic fuse-link designed to protect high-voltage DC circuits in commercial and utility-scale solar installations. Part of the established Mersen HelioProtection® HP12NHXL range, it provides dependable full-range protection against overloads and short circuits within demanding photovoltaic systems.
This gPV fuse-link features DIN-type bolted blades for direct mounting, enabling secure integration into photovoltaic combiner boxes, inverter input assemblies and DC distribution equipment. Its robust construction and ability to interrupt low-level fault currents help protect valuable solar equipment while supporting reliable long-term system operation.
With a rated current of 350 A and a voltage rating of 1250 V DC, the R1048677 is suitable for protecting high-capacity photovoltaic arrays and associated DC cabling. Its NH3L format makes it particularly suitable for panel builders, solar contractors and equipment manufacturers requiring dependable high-voltage fuse protection.
Photovoltaic fuse-links are designed to interrupt reverse currents, overloads and short-circuit faults within solar DC networks. Correctly selected gPV fuses help protect cables, combiner equipment, inverters and other valuable components from damage caused by abnormal electrical conditions.
The Mersen HP12NHXL range combines dependable low fault-current interruption with resistance to repeated temperature and current cycling. These characteristics make the R1048677 suitable for solar installations where reliable long-term performance and efficient high-voltage protection are essential.
| Current | 350 A |
|---|---|
| Voltage | 250 V |
| Manufacturer | Mersen |
| Series | HelioProtection® HP12NHXL |
| Model | R1048677 |
| Catalogue number | HP12NH3LGPV350B |
| Product type | Photovoltaic fuse-link |
| Operating class | gPV |
| Rated current | 350 A |
| Rated voltage | 1250 V DC |
| Voltage type | DC |
| Fuse size | NH3L |
| Blade type | DIN-type bolted blades |
| Mounting type | Direct mounting |
| Protection function | Overload and short-circuit protection |
| Standards | IEC 60269-6 and UL 2579 |
| Application | Photovoltaic system protection |
The Mersen R1048677 is used to protect high-voltage photovoltaic circuits, DC cabling, combiner boxes and inverter inputs against overloads and short circuits.
The R1048677 has a rated current of 350 A.
This photovoltaic fuse-link is rated for systems operating at up to 1250 V DC.
The fuse features DIN-type bolted blades and is designed for secure direct mounting within suitable photovoltaic protection equipment.
The gPV classification identifies a full-range fuse specifically designed to protect photovoltaic circuits against both overload and short-circuit currents.
Mersen HelioProtection® photovoltaic fuses are widely specified by solar engineers, panel builders and renewable energy contractors for reliable DC protection in demanding commercial and utility-scale 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...