Why Choose the Mersen J220992 Protistor® High Speed Semiconductor Fuse?
The Mersen J220992 is a Protistor® BS88-4 high speed semiconductor fuse designed to provide comprehensive protection for sensitive power semiconductor devices. Featuring a gR operating class, it delivers both overload and short-circuit protection for power electronics including IGBTs, thyristors, diodes and rectifiers, making it suitable for demanding industrial applications.
Manufactured in a compact 17 × 49 mm British Standard fuse-link, the J220992 has a 35 A current rating, a 690 V AC IEC rating, an integrated striker indicator and extremely high breaking capacity. It complies with IEC 60269-1, IEC 60269-4 and BS88-4 standards, making it ideal for semiconductor protection in modern industrial equipment.
The fuse is widely used within industrial drives, UPS systems, power converters, rectifiers and renewable energy equipment where dependable semiconductor protection and selective coordination are essential.
Key Advantages
- High speed Protistor® semiconductor protection fuse.
- 35 A current rating.
- 690 V AC IEC rated voltage.
- gR operating class providing overload and short-circuit protection.
- 200 kA breaking capacity.
- Integrated striker for remote fuse indication.
Key Features
- Mersen Protistor® BS88-4 series.
- Manufacturer part number J220992.
- Catalogue number BS17GB69V35P.
- 35 A rated current.
- 690 V AC IEC / 700 V AC UL / 600 V DC UL.
- gR operating class.
- 17 × 49 mm BS88-4 British Standard fuse-link.
- Integrated striker indication.
Reliable Protection for Industrial Power Electronics
Power semiconductor devices require protection capable of clearing fault currents within milliseconds. The Protistor® range is engineered to minimise let-through energy, helping prevent catastrophic damage to expensive electronic components while improving equipment reliability and reducing downtime.
Its gR operating class enables both overload and short-circuit protection, making the J220992 suitable for applications requiring comprehensive semiconductor protection and selective coordination with other protective devices.
Typical Applications
- Variable frequency drives.
- Industrial power converters.
- UPS systems.
- Industrial rectifiers.
- Renewable energy power conversion equipment.
- Semiconductor motor control systems.
