Mersen HP15NH3LGPV350 350 A gPV NH Size 3L photovoltaic fuse-link rated at 1500 V DC with plain blade terminals and a 50 kA breaking capacity.
£292.31
The Mersen M1037863, catalogue reference HP15NH3LGPV350, is a high-performance 350 A photovoltaic fuse-link engineered specifically to protect photovoltaic cables and equipment in commercial and utility-scale solar installations. As part of the trusted Mersen HelioProtection® HP15NH series, it is designed for photovoltaic systems operating at up to 1500 V DC.
Unlike conventional industrial fuses, the HP15NH series has been developed specifically for photovoltaic applications where sustained reverse currents and unique DC fault conditions require dedicated protection. Featuring a full-range gPV operating characteristic, the M1037863 safely interrupts both low-level overcurrents and high-energy short-circuit faults, helping protect PV group cables, combiner boxes and inverter DC inputs.
With a 350 A current rating, 1500 V DC operating voltage and a 50 kA DC breaking capacity, this NH Size 3L fuse-link provides dependable overcurrent protection for demanding renewable energy installations while offering excellent thermal cycling performance and long service life.
Large photovoltaic arrays require dedicated DC protection because their electrical fault behaviour differs significantly from conventional AC distribution systems. The HelioProtection® HP15NH range has been developed specifically to provide dependable protection against reverse currents and short-circuit faults throughout modern photovoltaic installations.
The M1037863 helps isolate faulty photovoltaic groups before excessive current can damage cables, connectors, combiner equipment or inverter electronics. Its NH Size 3L construction makes it particularly suitable for high-current DC protection within utility-scale renewable energy systems.
| Current | 350 A |
|---|---|
| Voltage | 500 V |
| Manufacturer | Mersen |
| Series | HelioProtection® HP15NH |
| Model | HP15NH3LGPV350 |
| Item number | M1037863 |
| EAN | 3605340547405 |
| Product type | Photovoltaic NH fuse-link |
| Application class | gPV |
| Rated current | 350 A |
| Rated voltage | 1500 V DC (IEC & UL) |
| Breaking capacity | 50 kA DC |
| Time constant | L/R 3 ms |
| Fuse size | NH Size 3L |
| Terminal type | Plain blade |
| Mounting type | Clip mounting |
| Power dissipation at rated current | 63 W |
| Power dissipation at 0.7 × rated current | 25 W |
| Frequency | 50 / 60 Hz |
| Weight | Approx. 1.69 kg |
| Standards | IEC 60269-6 and UL 2579 |
| HS Code | 85351000 |
The M1037863 is designed to protect photovoltaic cables and associated DC equipment against overloads and short-circuit faults in solar power systems.
The Mersen M1037863 has a rated current of 350 A.
This photovoltaic fuse-link is rated for systems operating at up to 1500 V DC.
The M1037863 is supplied as an NH Size 3L fuse-link with plain blade terminals for clip mounting.
The fuse complies with both IEC 60269-6 and UL 2579 photovoltaic fuse standards.
Mersen HelioProtection® photovoltaic fuse-links are trusted by renewable energy engineers, EPC contractors and solar installers to provide dependable overcurrent protection for high-voltage photovoltaic systems.
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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...