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31207 Wohner cylindr. fuse link 4 A
Wöhner 31207 10 x 38 mm cylindrical semiconductor fuse link rated at 4 A, 690 V AC with gR operating class for industrial semiconductor protection.
£8.40
Why Choose the Wöhner 31207 Cylindrical Semiconductor Fuse Link?
The Wöhner 31207 is a high-performance 10 × 38 mm cylindrical semiconductor fuse link designed to provide fast and dependable protection for sensitive power electronic equipment. Manufactured by Wöhner, this IEC-compliant fuse is specifically engineered to protect semiconductors including IGBTs, thyristors, rectifiers and power converters from overloads and short circuits.
Designed in accordance with IEC 60269-1 and IEC 60269-4, the Wöhner 31207 features a gR operating class, providing full-range protection for semiconductor devices. Its robust porcelain construction delivers excellent thermal stability, while the compact format enables easy installation in standard 10 × 38 mm fuse holders.
With a rated current of 4 A, a 690 V AC voltage rating and a high 200 kA breaking capacity, the Wöhner 31207 is ideal for industrial automation, variable speed drives, UPS equipment and power conversion systems requiring rapid fault protection.
Key Advantages
- Designed specifically for semiconductor protection.
- 4 A rated current for sensitive electronic equipment.
- 690 V AC operating voltage for industrial applications.
- gR operating class for fast full-range protection.
- 200 kA breaking capacity for reliable fault interruption.
- Compatible with standard 10 × 38 mm fuse holders.
Key Features
- Wöhner cylindrical semiconductor fuse link.
- 4 A rated current.
- 690 V AC rated voltage.
- 10 × 38 mm fuse size.
- gR utilisation category.
- 200 kA AC breaking capacity.
- Porcelain body with halogen-free construction.
- Manufactured to IEC 60269-1 and IEC 60269-4.
Fast Protection for Sensitive Power Electronics
The Wöhner 31207 is engineered to interrupt fault currents rapidly, protecting valuable semiconductor devices from excessive thermal and electrical stress. Its fast-acting gR characteristic minimises let-through energy, helping improve the reliability and service life of industrial power electronic equipment.
Its compact IEC-standard design enables straightforward installation into compatible fuse holders used in industrial control panels, servo systems, power converters and automation equipment where dependable semiconductor protection is essential.
Typical Applications
- Variable frequency drives.
- Servo drive systems.
- Power converters and inverters.
- UPS systems.
- Industrial automation equipment.
- Semiconductor protection circuits.
Technical Specifications
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| Current | 4 A | |
|---|---|---|
| Manufacturer | Wöhner | |
| Model | 31207 | |
| Product type | Cylindrical semiconductor fuse link | |
| Rated current | 4 A | |
| Rated voltage | 690 V AC | |
| Fuse size | 10 × 38 mm | |
| Operating class | gR | |
| Breaking capacity | 200 kA AC | |
| Standards | IEC 60269-1 / IEC 60269-4 | |
| Power dissipation | 1.1 W | |
| Material | Porcelain | |
| Halogen free | Yes | |
| Dimensions (W × H × D) | 10 × 10 × 38 mm |
Frequently Asked Questions
What is the Wöhner 31207 used for?
It is designed to protect semiconductor devices such as IGBTs, thyristors, rectifiers and power converters against overloads and short circuits.
What is the current rating of this fuse?
The Wöhner 31207 has a 4 A rated current.
What voltage is this fuse designed for?
It is suitable for electrical systems operating up to 690 V AC.
What does the gR operating class mean?
The gR classification provides fast full-range protection specifically developed for semiconductor devices and sensitive power electronic equipment.
Which fuse holders is this compatible with?
The Wöhner 31207 is designed for standard 10 × 38 mm IEC cylindrical fuse holders.
Trusted for Semiconductor Protection
Wöhner semiconductor fuse links are trusted worldwide by panel builders, OEM manufacturers and automation engineers for reliable protection of sensitive power electronic equipment in demanding industrial environments.
