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MERSEN FUSE 1500VDC NH3L gPV 250A HP15NH3LGPV250
Mersen K1037861 HP15NH3LGPV250 250 A gPV photovoltaic fuse-link rated at 1500 V DC, with an NH Size 3L body, plain blade terminals and a 150 kA breaking capacity.
£180.51
Why Choose the Mersen K1037861 Photovoltaic Fuse-Link?
The Mersen K1037861, catalogue reference HP15NH3LGPV250, is a high-performance 250 A photovoltaic fuse-link designed specifically to protect cables and electrical equipment in commercial and utility-scale solar power installations. Part of the established Mersen HelioProtection® HP15NH series, it is rated for photovoltaic circuits operating at up to 1500 V DC.
Photovoltaic systems can generate sustained reverse currents and unusual DC fault conditions that require specialist overcurrent protection. The K1037861 features a full-range gPV operating characteristic, enabling it to protect PV group cables against lower-level overcurrents and severe short-circuit faults.
With an NH Size 3L body, silver-plated copper plain blade terminals and a maximum breaking capacity of 150 kA at 1500 V DC, this fuse-link provides dependable protection for high-power solar installations. Its clip-mounted format supports secure installation in compatible photovoltaic fuse bases and DC distribution assemblies.
Key Advantages
- Special-purpose gPV fuse-link for photovoltaic protection.
- 250 A rated current for high-power solar circuits.
- 1500 V DC IEC and UL voltage rating.
- High 150 kA DC breaking capacity for reliable fault interruption.
- Full-range protection against photovoltaic overloads and short circuits.
- NH Size 3L format for demanding high-current applications.
- Silver-plated copper terminals support efficient and reliable current transfer.
Key Features
- Mersen HelioProtection® HP15NH series.
- Catalogue number: HP15NH3LGPV250.
- Item number: K1037861.
- 250 A rated current.
- 1500 V DC rated voltage.
- 150 kA maximum DC breaking capacity.
- Full-range gPV operating characteristic.
- NH Size 3L fuse-link construction.
- Plain blade terminals for clip mounting.
- Complies with IEC and UL photovoltaic fuse standards.
Reliable Protection for High-Voltage Photovoltaic Systems
Large photovoltaic arrays require dedicated DC protection because their electrical fault behaviour differs from conventional AC distribution systems. A gPV fuse-link is designed to interrupt the complete range of photovoltaic fault currents, including sustained reverse currents that may damage cables and connected equipment.
The Mersen K1037861 helps isolate a faulty photovoltaic group when a short circuit occurs within a panel or string circuit. Its high breaking capacity and robust NH construction make it suitable for combiner boxes, central inverter inputs and high-current DC distribution systems.
Typical Applications
- Utility-scale photovoltaic installations.
- Commercial solar power systems.
- Photovoltaic group cable protection.
- PV combiner and recombiner boxes.
- Central inverter input protection.
- High-current DC disconnect assemblies.
- 1500 V DC renewable energy distribution systems.
Technical Specifications
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| Voltage | 1500 V | |
|---|---|---|
| Current | 250 A | |
| Device Type | Fuse link | |
| Fuse Type | NH (DIN), PV (gPV) | |
| Fuse Class | gPV | |
| Manufacturer | Mersen | |
| Series | HelioProtection® HP15NH | |
| Model | HP15NH3LGPV250 | |
| Item number | K1037861 | |
| EAN | 3605340547382 | |
| Product type | Photovoltaic NH fuse-link | |
| Application class | gPV | |
| Rated current | 250 A | |
| Rated voltage | 1500 V DC IEC / UL | |
| Maximum breaking capacity | 150 kA DC at 1500 V | |
| Time constant | L/R 3 ms | |
| Fuse size | NH Size 3L | |
| Mounting type | Clip mounting | |
| Terminal type | Plain blades | |
| Terminal material | Silver-plated copper | |
| Frequency | 50 / 60 Hz | |
| Dimensions (L × W × H) | 205 × 70 × 84.5 mm | |
| Weight | Approx. 1.69 kg | |
| Power dissipation at rated current | 50 W | |
| Power dissipation at 0.7 × rated current | 20 W | |
| Standards | IEC 60269-6 and UL 2579 | |
| RoHS compliant | Yes | |
| HS Code | 85351000 |
Frequently Asked Questions
What is the Mersen K1037861 used for?
The K1037861 protects photovoltaic group cables and associated DC equipment against overloads, reverse currents and short-circuit faults.
What is the rated current of the K1037861?
The Mersen K1037861 has a rated current of 250 A.
What voltage can this photovoltaic fuse support?
The HP15NH3LGPV250 is rated for photovoltaic circuits operating at up to 1500 V DC under both IEC and UL specifications.
What fuse size is the Mersen K1037861?
This model is an NH Size 3L fuse-link with plain blade terminals for installation in a compatible clip-mounted fuse base.
What is the breaking capacity of the K1037861?
The fuse has a maximum breaking capacity of 150 kA DC at 1500 V, enabling dependable interruption of severe photovoltaic fault currents.
Trusted by Solar Energy Professionals
Mersen HelioProtection® photovoltaic fuse-links are widely used by solar engineers, panel builders and renewable energy contractors to provide dependable protection for high-voltage PV cables, combiner equipment and inverter circuits.
