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31277 Wohner holder for cylindrical fuses, for semiconductor fuses
Wöhner 31277 AMBUS Panel DIN rail-mounted 3-pole semiconductor fuse holder for 10 × 38 mm fuse links, rated 32 A and 690 V AC.
£16.76
Why Choose the Wöhner 31277 Semiconductor Fuse Holder?
The Wöhner 31277 is a high-quality DIN rail-mounted semiconductor fuse holder for 10 × 38 mm cylindrical fuse links. Featuring a 3-pole configuration, it is specifically designed for high-speed semiconductor protection in industrial control panels, power electronic equipment, automation systems and OEM machinery.
Rated at 32 A and 690 V AC, the Wöhner 31277 forms part of the AMBUS® Panel range and offers dependable protection for semiconductor fuse applications. Its compact design, large conductor clamping range and integrated label holder make installation straightforward whilst ensuring reliable long-term performance in demanding industrial environments.
Manufactured using halogen-free materials and approved to major international standards including IEC, UL, CSA and CCC, the Wöhner 31277 provides a professional solution wherever fast-acting semiconductor fuse protection is required.
Key Advantages
- Designed for 10 × 38 mm semiconductor protection fuse links.
- 3-pole configuration for three-phase protection.
- 32 A rated current and 690 V AC rated voltage.
- DIN rail mounting for rapid installation.
- Large conductor clamping range for flexible wiring.
- Integrated label holder for easy circuit identification.
- Touch-safe construction for improved operator safety.
- Manufactured using halogen-free materials.
Key Features
- Manufacturer: Wöhner.
- Part number: 31277.
- AMBUS® Panel semiconductor fuse holder.
- Suitable for 10 × 38 mm cylindrical semiconductor fuse links.
- 3-pole design.
- Standard DIN rail mounting.
- Large cable termination capacity.
- Integrated label holder.
- Touch-safe construction.
- Suitable for industrial semiconductor protection applications.
Designed for High-Speed Semiconductor Protection
Semiconductor fuse holders are designed for use with high-speed fuse links that protect sensitive power electronic equipment against destructive fault currents. Their rapid operation helps minimise damage to drives, inverters, rectifiers and other semiconductor devices, reducing maintenance costs and system downtime.
The Wöhner 31277 provides secure DIN rail installation together with dependable electrical and mechanical performance, making it suitable for industrial automation, machine building, power conversion systems and OEM electrical panels requiring three-phase semiconductor protection.
Typical Applications
- Variable speed drives (VSDs).
- Frequency converters.
- Power semiconductor protection.
- Industrial automation systems.
- OEM machinery.
- Industrial control panels.
- Power supplies and rectifiers.
- Three-phase power electronic equipment.
Technical Specifications
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| Conductor Size | 0.75–25 mm² | |
|---|---|---|
| Device Type | Busbar holder / support | |
| Current | 30 A | |
| Manufacturer | Wöhner | |
| Product range | AMBUS® Panel | |
| Model | 31277 | |
| Full part number | 31277000 | |
| Product type | Semiconductor fuse holder | |
| Fuse-link size | 10 × 38 mm | |
| Fuse-link standard | IEC / HD 60269-2 | |
| Configuration | 3P | |
| Rated current | 32 A | |
| Rated voltage | 690 V AC | |
| Rated insulation voltage (AC/DC) | 800 V | |
| Rated impulse withstand voltage | 6 kV | |
| Utilisation category | AC-22B (400 V) | |
| Conditional short-circuit current | 50 kA at 690 V (10 A fuse) | |
| Approved fuse operating class | gG (10 A), aR semiconductor fuse applications | |
| Permitted fuse-link power dissipation | 4.3 W | |
| Typical device power dissipation (80% load) | 0.6 W | |
| Power dissipation at full load | 0.9 W | |
| Dimensions (W × H × D) | 54 × 81 × 58 mm | |
| Mounting | DIN rail | |
| Connection capacity | 0.75–25 mm² (AWG 18–4) | |
| Halogen free | Yes | |
| Pack size | 4 | |
| Approximate weight | 155 g | |
| EAN | 4021267312770 | |
| ETIM | EC002705 | |
| ECLASS | 27142190 | |
| Approvals | IEC (CB), UL, CSA, CCC | |
| Standards | IEC 60947-1:2020, IEC 60947-3:2020 (AC ratings only), UL 4248-1 | |
| Type number | AES10x38 |
Frequently Asked Questions
What is the Wöhner 31277 designed for?
The Wöhner 31277 is a DIN rail-mounted 3-pole semiconductor fuse holder designed for 10 × 38 mm cylindrical semiconductor protection fuse links.
What is the current rating?
The fuse holder has a 32 A rated current.
What voltage is it rated for?
The Wöhner 31277 is rated for operation up to 690 V AC.
Can it be mounted on a DIN rail?
Yes. The holder is designed for installation on a standard DIN mounting rail.
Which fuse size is compatible?
It accepts 10 × 38 mm cylindrical semiconductor protection fuse links manufactured to IEC / HD 60269-2.
Trusted by Industrial Professionals Worldwide
Wöhner semiconductor fuse holders are trusted by panel builders, OEM manufacturers and industrial engineers for protecting sensitive power electronic equipment in demanding industrial applications.
