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MERSEN FUSE 6,9 GRB 17 D08 /20 6,9GRB17D08/20
Why Choose the MERSEN FUSE 6,9 GRB 17 D08 /20 6,9GRB17D08/20?
Why Choose the Mersen P220974 Protistor® Semiconductor Fuse?
The Mersen P220974 is a high-speed Protistor® BS88-4 semiconductor fuse engineered to provide rapid short-circuit protection for sensitive power semiconductors used in industrial drives, converters, UPS systems and power electronic equipment. Designed specifically for protecting IGBTs, thyristors, diodes and similar semiconductor devices, it delivers exceptional current limiting performance and dependable fault interruption.
Manufactured by Mersen, a global leader in electrical protection technology, the P220974 features a gRB operating characteristic for semiconductor protection applications. Its compact BS88-4 17 × 49 mm design enables easy installation into compatible fuse holders while ensuring reliable operation in demanding industrial environments.
With a 20 A current rating, 690 V AC voltage rating and compact cylindrical BS88-4 format, the Mersen P220974 is ideally suited for industrial automation, motor drives, rectifiers, inverters and other power conversion systems requiring dependable semiconductor protection.
Key Advantages
- High-speed Protistor® semiconductor protection fuse.
- 20 A current rating for sensitive power electronics.
- 690 V AC operating voltage for industrial applications.
- gRB operating characteristic designed for semiconductor protection.
- Excellent current limiting capability reduces fault energy.
- Compact BS88-4 design for straightforward installation.
Key Features
- Mersen Protistor® series.
- 20 A rated current.
- 690 V AC rated voltage.
- gRB operating characteristic.
- BS88-4 17 × 49 mm cylindrical fuse.
- Without blown fuse indicator.
- Designed for semiconductor circuit protection.
- Suitable for industrial power electronics.
Reliable Protection for Power Electronics
High-speed semiconductor fuses are specifically designed to interrupt fault currents before damage can occur to expensive semiconductor devices. The Mersen P220974 provides rapid fault clearance with low let-through energy, helping maximise equipment reliability and reduce maintenance costs.
Its proven Protistor® technology makes it suitable for protecting industrial power conversion equipment where conventional fuses cannot react quickly enough to safeguard semiconductor components.
Typical Applications
- Variable frequency drives (VFDs).
- Industrial inverters.
- Power converters and rectifiers.
- UPS systems.
- Motor control equipment.
- Industrial automation and OEM machinery.
Technical Specifications
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| Device Type | Fuse link | |
|---|---|---|
| Fuse Type | D / D0 (Neozed/Diazed), Semiconductor | |
| Current | 20 A | |
| Voltage | 690 V | |
| Manufacturer | Mersen | |
| Series | Protistor® | |
| Model | P220974 | |
| Product type | High-speed semiconductor fuse | |
| Rated current | 20 A | |
| Rated voltage | 690 V AC | |
| Operating class | gRB | |
| Standard | BS88-4 | |
| Fuse dimensions | 17 × 49 mm | |
| Blown fuse indicator | No | |
| Mounting | Compatible BS88 fuse holder | |
| Weight | Approx. 42 g |
Frequently Asked Questions
What is the Mersen P220974 used for?
The P220974 protects sensitive semiconductor devices such as IGBTs, thyristors and diodes from damaging short-circuit currents.
What is the current rating of this fuse?
The Mersen P220974 has a 20 A current rating.
What voltage is the fuse rated for?
This fuse is designed for operation up to 690 V AC.
What does the gRB characteristic mean?
The gRB operating class provides full-range protection for semiconductor devices while delivering excellent current limiting performance.
Where is this fuse commonly installed?
It is commonly installed in industrial drives, converters, UPS systems, rectifiers and other power electronic equipment.
Trusted by Industrial Power Engineers
Mersen Protistor® semiconductor fuses are trusted worldwide by electrical engineers and OEM manufacturers to deliver dependable protection for critical power electronic systems and industrial automation equipment.
