Mersen DC123GPV10C400P 400 A gPV square-body photovoltaic fuse-link rated at 1000 V DC with a 100 kA breaking capacity.
£317.88
The Mersen N1025398, manufacturer reference DC123GPV10C400P, is a high-performance 400 A photovoltaic fuse-link specifically designed to protect photovoltaic cables and equipment in commercial and utility-scale solar power installations. Part of the proven Mersen HelioProtection® DC120-123 series, it is engineered for photovoltaic systems operating at up to 1000 V DC.
Unlike conventional industrial fuses, the DC120-123 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 N1025398 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 400 A current rating, 1000 V DC operating voltage and a 100 kA DC breaking capacity, this Size 123 square-body fuse-link provides dependable overcurrent protection for demanding renewable energy installations while delivering excellent long-term reliability.
Large photovoltaic arrays require dedicated DC protection because their electrical fault behaviour differs significantly from conventional AC distribution systems. The HelioProtection® DC120-123 range has been engineered specifically to provide dependable protection against reverse currents and short-circuit faults throughout modern photovoltaic installations.
The N1025398 helps isolate faulty photovoltaic groups before excessive current can damage cables, connectors, combiner equipment or inverter electronics. Its Size 123 square-body construction makes it particularly suitable for high-current DC protection within utility-scale renewable energy systems.
| Current | 400 A |
|---|---|
| Voltage | 000 V |
| Manufacturer | Mersen |
| Series | HelioProtection® DC120-123 |
| Model | DC123GPV10C400P |
| Item number | N1025398 |
| EAN | 3605340526547 |
| Product type | Photovoltaic square-body fuse-link |
| Application class | gPV |
| Rated current | 400 A |
| Rated voltage | 1000 V DC |
| Breaking capacity | 100 kA DC |
| Minimum breaking current | 1.35 × In |
| Fuse size | 123 |
| Body style | Square body |
| Terminal type | Plain blade |
| Power dissipation at rated current | 79.3 W |
| Power dissipation at 0.7 × rated current | 32.4 W |
| Standards | IEC 60269-1 and IEC 60269-6 |
The N1025398 is designed to protect photovoltaic cables and associated DC equipment against overloads and short-circuit faults in solar power systems.
The Mersen N1025398 has a rated current of 400 A.
This photovoltaic fuse-link is rated for systems operating at up to 1000 V DC.
The N1025398 is supplied as a Size 123 square-body fuse-link with plain blade terminals.
The fuse complies with IEC 60269-1 and IEC 60269-6 standards for photovoltaic fuse protection.
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...
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...