Wöhner 31280 AMBUS Panel 3-pole DIN rail-mounted semiconductor fuse holder for 14 × 51 mm cylindrical fuse links, rated at 50 A and 690 V AC.
£67.18
The Wöhner 31280 is a heavy-duty 3-pole DIN rail-mounted fuse holder for 14 × 51 mm cylindrical semiconductor fuse links. Part of the renowned AMBUS® Panel range, it is engineered to provide dependable protection for power electronic equipment, industrial automation systems and three-phase electrical installations requiring high-speed semiconductor fuse protection.
Rated at 50 A and 690 V AC, the Wöhner 31280 is designed for installation on standard DIN mounting rails and offers a compact solution for three-phase protection. The holder features a large conductor clamping range, integrated label holder and touch-safe construction, making it ideal for professional panel builders and OEM machine manufacturers.
Manufactured using halogen-free materials and approved to major international standards including IEC, UL, CSA and CCC, the Wöhner 31280 delivers reliable protection for demanding industrial applications where rapid fault interruption is essential for safeguarding semiconductor devices.
The Wöhner 31280 is designed for use with high-speed semiconductor fuse links that protect sensitive power electronic devices against damaging fault currents. Its robust three-pole construction makes it ideal for protecting industrial drives, inverters, rectifiers and other three-phase semiconductor equipment.
The compact DIN rail-mounted design helps maximise enclosure space while providing secure cable termination for conductors up to 35 mm². An integrated label holder simplifies circuit identification during installation and maintenance, making the holder well suited to OEM machinery and industrial control panels.
| Current | 50 A |
|---|---|
| Phase | Three Phase |
| Manufacturer | Wöhner |
| Product range | AMBUS® Panel |
| Model | 31280 |
| Full part number | 31280000 |
| Product type | Semiconductor fuse holder |
| Fuse-link size | 14 × 51 mm |
| Fuse-link standard | IEC / HD 60269-2 |
| Configuration | 3P |
| Rated current | 50 A |
| Rated voltage | 690 V AC |
| Rated insulation voltage | 800 V AC/DC |
| Rated impulse withstand voltage | 6 kV |
| Approved fuse operating class | gG |
| Suitable semiconductor fuse classes | aR, gR and gRL |
| Permitted fuse-link power dissipation | 6.5 W |
| Dimensions (W × H × D) | 81 × 90 × 69 mm |
| Mounting | DIN rail |
| Connection capacity | 1.5–35 mm² (AWG 14–2) |
| Degree of protection | IP20 |
| Terminal type | Cage-clamp connection |
| Minimum operating temperature | -40°C |
| Halogen free | Yes |
| Pack size | 2 |
| EAN | 4021267312800 |
| ECLASS | 27142190 |
| ETIM | EC002705 |
| Standards | IEC 60947-1:2020, IEC 60947-3:2020 (AC ratings only), UL 4248-1 |
| Approvals | IEC (CB), UL, CSA and CCC |
| Type number | AES14x51 |
The Wöhner 31280 is designed for 14 × 51 mm cylindrical fuse links manufactured to IEC / HD 60269-2.
This model features a 3-pole configuration for three-phase circuit protection.
The fuse holder has a rated current of 50 A.
Yes. The holder is designed for installation on a standard DIN mounting rail.
Yes. It is designed for semiconductor protection applications and supports compatible high-speed fuse links in accordance with the manufacturer's specifications.
Wöhner AMBUS® Panel fuse holders are trusted by panel builders, OEM manufacturers and industrial engineers for reliable, standards-compliant semiconductor fuse protection in demanding industrial environments.
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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...