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 6,9 GRB 17 D08 /45 6,9GRB17D08/45
Why Choose the MERSEN FUSE 6,9 GRB 17 D08 /45 6,9GRB17D08/45?
Why Choose the Mersen V220979 High-Speed Semiconductor Fuse?
The Mersen V220979 (catalogue number DN17GB69V45) is a Protistor® BS88-4 high-speed semiconductor fuse specifically designed to provide fast and reliable protection for sensitive power electronic equipment. Featuring a gRB operating characteristic, it provides both overload and short-circuit protection for semiconductor devices in demanding industrial applications.
With a 45 A current rating, 690 V AC / 690 V DC voltage rating and a very high 200 kA breaking capacity, the V220979 rapidly clears fault currents to minimise thermal and electrical stress on valuable semiconductor components such as IGBTs, thyristors, diodes and rectifier assemblies.
Manufactured in the compact 17 × 49 mm BS88-4 format, this Protistor® fuse is ideal for industrial drives, UPS systems, converters, renewable energy equipment and other power electronic installations requiring dependable semiconductor protection.
Key Advantages
- Full-range gRB semiconductor protection.
- 45 A current rating.
- 690 V AC / 690 V DC operating voltage.
- 200 kA breaking capacity.
- Low let-through energy protects sensitive semiconductor devices.
- Compact BS88-4 cylindrical format for industrial applications.
Key Features
- Mersen Protistor® Series.
- Manufacturer part number: V220979.
- Catalogue number: DN17GB69V45.
- 45 A rated current.
- 690 V AC / 690 V DC rated voltage.
- gRB full-range semiconductor protection.
- 17 × 49 mm BS88-4 cylindrical fuse.
- High interrupting capability.
Designed for Reliable Semiconductor Protection
Protistor® semiconductor fuses are engineered to protect modern power electronic equipment by rapidly interrupting fault currents before excessive thermal energy can damage expensive semiconductor devices. Their low I²t characteristics help maximise equipment reliability while reducing downtime and maintenance costs.
The Mersen V220979 is widely used in industrial automation, motor control, UPS systems and renewable energy installations where dependable protection of semiconductor devices is essential.
Typical Applications
- Variable frequency drives (VFDs).
- Industrial inverters.
- UPS systems.
- Power converters.
- Industrial rectifiers.
- Motor control equipment.
- Renewable energy systems.
- OEM industrial machinery.
Technical Specifications
Tick the specs you need, then view products that match.
| Device Type | Fuse link | |
|---|---|---|
| Fuse Type | D / D0 (Neozed/Diazed), Semiconductor | |
| Fuse Size | 17x49 mm | |
| Current | 45 A | |
| Voltage | 690 V | |
| Manufacturer | Mersen | |
| Series | Protistor® | |
| Model | V220979 | |
| Catalogue number | DN17GB69V45 | |
| Product type | High-speed semiconductor fuse | |
| Rated current | 45 A | |
| Rated voltage | 690 V AC / 690 V DC | |
| Fuse characteristic | gRB | |
| Fuse size | 17 × 49 mm (BS88-4) | |
| Breaking capacity | 200 kA | |
| Terminal type | Blade / inline holder mounting | |
| Body dimensions | Approximately 46.2 × 18 mm | |
| Weight | Approximately 42 g | |
| Standards | UL Recognised, cUL |
Frequently Asked Questions
What is the Mersen V220979 used for?
The Mersen V220979 is a high-speed gRB semiconductor fuse designed to protect sensitive power electronic equipment against overload and short-circuit faults.
What are the electrical ratings of the V220979?
The fuse is rated at 45 A with a 690 V AC / 690 V DC operating voltage.
What does the gRB characteristic mean?
The gRB characteristic provides full-range semiconductor protection, helping to protect semiconductor devices against both overloads and short-circuit faults.
What size is the V220979 fuse?
The fuse uses the compact 17 × 49 mm BS88-4 cylindrical format for compatible industrial fuse holders.
Where is the Mersen V220979 commonly installed?
It is commonly installed in industrial drives, converters, UPS systems, renewable energy equipment and other semiconductor-based power electronic systems.
Trusted by Industrial Power Electronics Professionals
Mersen Protistor® semiconductor fuses are trusted worldwide by OEM manufacturers, electrical engineers and industrial maintenance professionals for protecting valuable power electronic equipment in demanding industrial applications.
