Standard delivery
£8 ex VAT · free over £200UK parcel delivery is £8 ex VAT, or free on orders over £200 ex VAT.
Heavier items may be charged at a weight-based or pallet rate, shown at checkout.
MERSEN FUSE DIII-FUSE 690V 25A GL DIIIGG69V25
Mersen H218668 DIIIGG69V25 DIII gG DIN D fuse link rated at 25 A and 690 V AC for overload and short-circuit protection.
£37.60
Why Choose the Mersen H218668 DIII Fuse Link?
The Mersen H218668, catalogue number DIIIGG69V25, is a high-performance 25 A gG DIN D fuse link designed to provide reliable protection for low-voltage electrical circuits, cables and power distribution equipment against overloads and short-circuit currents. Part of Mersen's proven D fuse-link range, it is ideal for industrial and commercial electrical installations operating on higher voltage distribution systems.
Manufactured in the DIII screw fuse format, the H218668 is rated for operation at up to 690 V AC. Its gG utilisation category delivers full-range protection for both conductors and electrical equipment, while the robust ceramic construction ensures dependable long-term performance in demanding industrial environments.
The fuse features a yellow colour-coded indicator corresponding to its 25 A current rating, allowing rapid visual identification during installation and maintenance. Its high breaking capacity makes it suitable for industrial switchboards, distribution panels and critical low-voltage power systems.
Key Advantages
- Reliable gG full-range protection against overloads and short circuits.
- 25 A rated current with yellow identification indicator.
- Suitable for 690 V AC industrial installations.
- 50 kA breaking capacity for demanding fault conditions.
- Robust ceramic construction for long service life.
- Compatible with standard DIII DIN D fuse holders.
Key Features
- Mersen D fuse-link series.
- DIIIGG69V25 catalogue designation.
- 25 A rated current.
- 690 V AC rated voltage.
- gG utilisation category.
- Yellow colour-coded indicator.
- Ceramic insulated body.
- Visual operating indicator.
- Designed for cable and conductor protection.
Reliable Protection for Industrial Power Distribution
The Mersen H218668 safely interrupts excessive fault currents before they can damage cables, conductors and connected equipment. Its gG operating characteristic provides complete protection against both overloads and short-circuit conditions, making it ideal for industrial low-voltage power distribution systems.
The DIN D screw fuse system remains widely used because it combines dependable protection with straightforward replacement and colour-coded identification, allowing maintenance personnel to quickly verify the correct current rating.
Typical Applications
- Industrial switchboards.
- Main distribution panels.
- Commercial electrical installations.
- Motor control centres.
- Cable and conductor protection.
- Low-voltage power distribution systems.
Technical Specifications
Tick the specs you need, then view products that match.
| Fuse Indication | Visual indicator | |
|---|---|---|
| Current | 25 A | |
| Voltage | 690 V | |
| Device Type | Fuse link | |
| Fuse Type | D / D0 (Neozed/Diazed) | |
| Fuse Size | DIII | |
| Fuse Class | gG | |
| Manufacturer | Mersen | |
| Series | D Fuse-links gG | |
| Model | H218668 | |
| Catalogue number | DIIIGG69V25 | |
| Product type | DIN D fuse link | |
| Fuse size | DIII | |
| Utilisation category | gG | |
| Rated current | 25 A | |
| Rated voltage AC | 690 V | |
| Rated voltage DC | 500 V DC | |
| Breaking capacity | 50 kA | |
| Power dissipation | 20 W | |
| Identification colour | Yellow | |
| Indication system | Coloured indicator flag with visual indication | |
| Body material | Ceramic | |
| Product weight | Approx. 73.6 g | |
| Package quantity | 25 | |
| EAN | 3605340709391 | |
| HS Code | 85361050 |
Frequently Asked Questions
What is the Mersen H218668 used for?
The Mersen H218668 protects low-voltage electrical circuits, cables and distribution equipment against overloads and short-circuit currents.
What is the current rating of this fuse?
The fuse has a 25 A current rating and is identified by a yellow colour indicator.
What voltage is the H218668 rated for?
The fuse is rated for operation at up to 690 V AC and 500 V DC.
What does the gG classification mean?
The gG utilisation category provides full-range protection against both overloads and short-circuit faults for general electrical installations.
Which fuse holder is compatible with this fuse?
The H218668 is designed for installation in compatible DIII DIN D screw-type fuse bases and holders.
Trusted Protection from Mersen
Mersen D fuse links are trusted by electrical contractors, OEMs and industrial maintenance engineers worldwide for dependable protection of low-voltage electrical distribution systems.
