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31973 Wohner holder for cylindrical fuses
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.
£11.94
Why Choose the Wöhner 31973 Photovoltaic Fuse Holder with LED?
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.
Key Advantages
- Designed for 10 × 38 mm photovoltaic (gPV) fuse links.
- Integrated LED provides instant blown-fuse indication.
- 30 A rated current.
- 1000 V DC rated operating voltage.
- Ideal for photovoltaic and DC protection applications.
- DIN rail mounting for fast installation.
- Wide conductor clamping range.
- Integrated label holder for easy circuit identification.
Key Features
- Wöhner AMBUS® Panel series.
- Single-pole cylindrical fuse holder.
- Compatible with 10 × 38 mm gPV fuse links.
- Integrated LED blown-fuse indication.
- 30 A rated current.
- 1000 V DC rated voltage.
- DIN rail mounting.
- Large cable clamping range.
- Halogen-free construction.
- Integrated label holder.
Reliable Protection for Photovoltaic Installations
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.
Typical Applications
- Photovoltaic string combiner boxes.
- Solar power installations.
- Battery energy storage systems.
- DC distribution panels.
- Industrial DC control systems.
- Renewable energy installations.
Technical Specifications
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| Device Type | Busbar holder / support | |
|---|---|---|
| Current | 30 A | |
| Poles | 1-pole | |
| 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 |
Frequently Asked Questions
What fuse size does the Wöhner 31973 accept?
It is designed for 10 × 38 mm photovoltaic (gPV) cylindrical fuse links manufactured to IEC / EN 60269-6.
What does the integrated LED indicate?
The LED illuminates when the fuse has operated and the fuse holder is energised, allowing rapid visual identification of a blown fuse.
What is the rated voltage of the Wöhner 31973?
The fuse holder is rated for 1000 V DC, making it ideal for photovoltaic applications.
How is the Wöhner 31973 installed?
It mounts directly onto a standard DIN rail and uses robust cage clamp terminals for secure cable connections.
Where is the Wöhner 31973 commonly used?
It is widely used in photovoltaic systems, solar combiner boxes, battery storage installations and other high-voltage DC electrical applications.
Trusted by Renewable Energy Professionals
Wöhner photovoltaic fuse holders are trusted worldwide for delivering reliable DC circuit protection, compact installation and fast fault identification through integrated LED indication.
