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31280 Wohner holder for cylindrical fuses, for semiconductor fuses
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.
£53.74
Why Choose the Wöhner 31280 Semiconductor Fuse Holder?
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.
Key Advantages
- Designed for 14 × 51 mm semiconductor fuse links.
- 3-pole configuration for three-phase protection.
- 50 A rated current and 690 V AC IEC rating.
- DIN rail mounting for rapid installation.
- Large conductor clamping range.
- Integrated label holder for clear circuit identification.
- Touch-safe IP20 construction.
- Halogen-free construction for industrial environments.
Key Features
- Manufacturer: Wöhner.
- Part number: 31280.
- AMBUS® Panel semiconductor fuse holder.
- Suitable for 14 × 51 mm cylindrical fuse links.
- 3-pole design.
- Standard DIN rail mounting.
- Large cable termination capacity.
- Integrated label holder.
- Touch-safe construction.
- Designed for industrial semiconductor protection applications.
Designed for Three-Phase Semiconductor Protection
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.
Typical Applications
- Three-phase variable speed drives.
- Frequency converters.
- Industrial inverters.
- Rectifier protection.
- Power semiconductor protection.
- OEM machinery.
- Industrial automation systems.
- Electrical control panels.
- Power distribution equipment.
Technical Specifications
Tick the specs you need, then view products that match.
| Conductor Size | 1.5–35 mm² | |
|---|---|---|
| Device Type | Busbar holder / support | |
| 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 |
Frequently Asked Questions
What fuse size does the Wöhner 31280 accept?
The Wöhner 31280 is designed for 14 × 51 mm cylindrical fuse links manufactured to IEC / HD 60269-2.
How many poles does the Wöhner 31280 have?
This model features a 3-pole configuration for three-phase circuit protection.
What is the rated current?
The fuse holder has a rated current of 50 A.
Can it be mounted on a DIN rail?
Yes. The holder is designed for installation on a standard DIN mounting rail.
Is it suitable for semiconductor fuse links?
Yes. It is designed for semiconductor protection applications and supports compatible high-speed fuse links in accordance with the manufacturer's specifications.
Trusted by Industrial Professionals Worldwide
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.
