Mersen J1039746 HP12NH2XLGPV200 200 A gPV photovoltaic fuse-link rated at 1250 V DC, with an NH Size 2XL body and plain blade terminals.
£199.07
The Mersen J1039746, manufacturer reference HP12NH2XLGPV200, is a high-performance 200 A photovoltaic fuse-link designed to protect cables and electrical equipment in large commercial and utility-scale solar installations. As part of the Mersen HelioProtection® HP12NHXL series, it provides specialist overcurrent protection for photovoltaic circuits operating at up to 1250 V DC.
Photovoltaic systems can produce reverse currents and sustained low-level faults that conventional industrial fuses may not safely interrupt. The J1039746 uses a full-range gPV operating characteristic developed specifically for solar applications, helping isolate damaged circuits before excessive current affects PV cables, combiner equipment, disconnect assemblies or inverter inputs.
With its NH Size 2XL format, plain blade terminals and high DC breaking capacity, this fuse-link is suitable for clip-mounted fuse bases in demanding renewable energy installations. Its robust construction supports dependable performance through the repeated electrical loading and temperature cycling experienced by photovoltaic systems.
Large photovoltaic arrays require dedicated DC protection because their fault-current behaviour differs from that of conventional AC distribution systems. A gPV fuse-link is designed to interrupt both lower-level reverse currents and severe short-circuit currents across the complete operating range of the fuse.
The Mersen J1039746 helps protect photovoltaic group cables and downstream equipment by disconnecting a faulty circuit before excessive current causes further damage. Its NH construction makes it particularly suitable for high-current combiner boxes, inverter input circuits and central DC distribution equipment.
| Current | 200 A |
|---|---|
| Voltage | 250 V |
| Manufacturer | Mersen |
| Series | HelioProtection® HP12NHXL |
| Model | HP12NH2XLGPV200 |
| Item number | J1039746 |
| Product type | Photovoltaic NH fuse-link |
| Application class | gPV |
| Rated current | 200 A |
| Rated voltage | 1250 V DC |
| Breaking capacity | 50 kA DC |
| Fuse size | NH Size 2XL |
| Terminal type | Plain blade |
| Mounting type | Clip mounting |
| Power dissipation at rated current | 40 W |
| Power dissipation at 0.7 × rated current | 16 W |
| Standards | IEC 60269-6 and UL 2579 |
| Weight | Approx. 1.05 kg |
The J1039746 is used to protect high-current photovoltaic cables and equipment against overloads, reverse currents and short-circuit faults.
The Mersen J1039746 has a rated current of 200 A.
This photovoltaic fuse-link is rated for systems operating at up to 1250 V DC.
The J1039746 is an NH Size 2XL fuse-link with plain blade terminals for installation in a compatible clip-mounted fuse base.
The fuse is designed in accordance with IEC 60269-6 and UL 2579 requirements for photovoltaic fuse protection.
Mersen HelioProtection® fuse-links are widely used by solar engineers, panel builders and renewable energy contractors to provide dependable protection for high-voltage 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...