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MERSEN FUSE 1250VDC NH3L gPV 250A K bolted HP12NH3LGPV250B
Mersen P1048675 HelioProtection HP12NH3LGPV250B photovoltaic fuse-link with a 250 A rating, 1250 V DC rating, NH3L format and bolted direct-mounting connections.
This product has been discontinued
A direct replacement is available below.
Replacement product
MERSEN FUSE 1500VDC NH3L gPV 250A K bolted HP15NH3LGPV250B
SKU: W1048681
£190.00 ex VAT
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Why Choose the Mersen P1048675 HelioProtection® Photovoltaic Fuse?
The Mersen P1048675 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 reliable full-range protection against overloads and short circuits in demanding photovoltaic systems.
This gPV fuse-link features bolted connections for direct mounting, allowing secure integration into photovoltaic combiner boxes, inverter input assemblies and DC distribution equipment. Its durable construction, low power losses and ability to interrupt low fault currents help improve the safety, efficiency and operating life of solar power installations.
With a rated current of 250 A and a voltage rating of 1250 V DC, the P1048675 is suitable for protecting high-capacity photovoltaic arrays and associated DC cabling. Its NH3L format and direct-mounting design make it particularly suitable for panel builders, renewable energy contractors and equipment manufacturers requiring dependable high-voltage fuse protection.
Key Advantages
- Designed specifically for photovoltaic DC circuit protection.
- 250 A rated current for high-capacity solar installations.
- 1250 V DC voltage rating for modern PV systems.
- gPV full-range protection against overloads and short circuits.
- Bolted direct-mounting terminals provide a secure electrical connection.
- Low power losses help support efficient system operation.
Key Features
- Mersen HelioProtection® HP12NHXL series.
- Catalogue number: HP12NH3LGPV250B.
- 250 A rated current.
- 1250 V DC rated voltage.
- gPV operating class.
- NH3L body size.
- Bolted blades for direct mounting.
- Complies with photovoltaic fuse requirements under IEC 60269-6 and UL 2579.
Reliable Protection for High-Voltage Photovoltaic Systems
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 low fault-current interruption capability with temperature-cycle resistance and durable construction. These characteristics make the P1048675 suitable for solar installations where dependable long-term performance and efficient high-voltage protection are essential.
Typical Applications
- Photovoltaic array combiner boxes.
- Solar inverter DC input protection.
- Sub-combiner and master-combiner panels.
- Utility-scale solar farms.
- Commercial photovoltaic installations.
- High-voltage DC distribution equipment.
Technical Specifications
Tick the specs you need, then view products that match.
| Voltage | 1250 V | |
|---|---|---|
| Current | 250 A | |
| Device Type | Fuse link | |
| Fuse Type | PV (gPV) | |
| Fuse Class | gPV | |
| Manufacturer | Mersen | |
| Series | HelioProtection® HP12NHXL | |
| Model | P1048675 | |
| Catalogue number | HP12NH3LGPV250B | |
| Product type | Photovoltaic fuse-link | |
| Operating class | gPV | |
| Rated current | 250 A | |
| Rated voltage | 1250 V DC | |
| Interrupting rating | 50 kA DC | |
| Fuse size | NH3L | |
| Connection type | Bolted blades | |
| Mounting type | Direct mounting | |
| Power dissipation at rated current | 55 W | |
| Power dissipation at 0.7 × rated current | 18 W | |
| Weight | Approx. 1.66 kg | |
| Standards | IEC 60269-6 and UL 2579 | |
| Package quantity | 1 |
Frequently Asked Questions
What is the Mersen P1048675 used for?
The Mersen P1048675 is used to protect high-voltage photovoltaic circuits, DC cabling, combiner boxes and inverter inputs against overloads and short circuits.
What is the current rating of this fuse?
The P1048675 has a rated current of 250 A.
What voltage is the P1048675 rated for?
This photovoltaic fuse-link is rated for systems operating at up to 1250 V DC.
How is the fuse installed?
The fuse features bolted blades and is designed for secure direct mounting within suitable photovoltaic protection equipment.
What does the gPV classification mean?
The gPV classification identifies a full-range fuse specifically designed to protect photovoltaic circuits against both overload and short-circuit currents.
Trusted by Solar and Electrical Professionals Worldwide
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.
