Wöhner 31973 single-pole DIN rail mounted photovoltaic fuse holder with integrated LED indication for 10 × 38 mm gPV fuse links, rated 30 A and 1000 V DC.
£14.92
The Wöhner 31973 is a premium single-pole DIN rail mounted photovoltaic fuse holder with integrated LED indication, designed for 10 × 38 mm gPV cylindrical fuse links. Part of the Wöhner AMBUS® Panel range, it provides dependable overcurrent protection for photovoltaic systems and other high-voltage DC applications while offering immediate visual indication of a blown fuse to simplify maintenance.
Rated at 30 A with a 1000 V DC operating voltage, the Wöhner 31973 is specifically engineered for solar PV installations, battery energy storage systems and DC distribution panels. The integrated LED operates across a 400–1000 V DC range and illuminates when a fuse has operated, allowing maintenance engineers to identify faults quickly without removing the fuse link.
Its compact DIN rail design, wide conductor clamping range and integrated label holder ensure straightforward installation while maintaining a tidy, professional panel layout. International IEC, UL, CSA and CCC approvals make the Wöhner 31973 a reliable choice for demanding renewable energy and industrial applications.
The Wöhner 31973 has been developed specifically for modern photovoltaic systems, providing dependable protection for PV strings using 10 × 38 mm gPV fuse links. The integrated LED immediately indicates a blown fuse when the holder is energised, helping maintenance engineers locate faults rapidly and reduce system downtime.
Its compact DIN rail mounting, robust cage clamp terminals and wide conductor capacity make it suitable for solar combiner boxes, battery storage equipment, DC switchboards and renewable energy installations requiring reliable high-voltage DC protection.
| Current | 30 A |
|---|---|
| Manufacturer | Wöhner |
| Series | AMBUS® Panel |
| Model | 31973 |
| Product type | Photovoltaic cylindrical fuse holder with LED |
| Fuse size | 10 × 38 mm |
| Fuse standard | IEC / EN 60269-6 |
| Number of poles | 1 |
| Rated current | 30 A |
| Rated operating voltage | 1000 V DC |
| Minimum operating voltage | 400 V DC |
| Rated insulation voltage | 1000 V DC |
| LED operating range | 400–1000 V DC |
| Permitted fuse power dissipation | 4 W |
| Mounting type | DIN rail |
| Connection type | Cage clamp |
| Cable size | 0.75–25 mm² (AWG 18–4) |
| Degree of protection | IP20 |
| Material | Halogen-free |
| Approvals | IEC (CB), UL, CSA, CCC |
It is designed for 10 × 38 mm photovoltaic (gPV) cylindrical fuse links manufactured to IEC / EN 60269-6.
The LED illuminates when the fuse has operated and the fuse holder is energised, allowing rapid visual identification of a blown fuse.
The fuse holder is rated for 1000 V DC, making it ideal for photovoltaic applications.
It mounts directly onto a standard DIN rail and uses robust cage clamp terminals for secure cable connections.
It is widely used in photovoltaic systems, solar combiner boxes, battery storage installations and other high-voltage DC electrical applications.
Wöhner photovoltaic fuse holders are trusted worldwide for delivering reliable DC circuit protection, compact installation and fast fault identification through integrated LED indication.
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LED Controls is a specialist distributor of factory automation and industrial controls, supplying OEMs, machine builders, panel builders and end users throughout the UK and worldwide. As a trusted UK distributor for many of the world’s leading automation manufacturers, we provide industrial control products, technical expertise and bespoke automation solutions backed by outstanding customer service.
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...