Why Choose the Mersen FR22GR69V25T Protistor® High-Speed Fuse?
The Mersen FR22GR69V25T is a Protistor® high-speed cylindrical semiconductor fuse designed to provide full-range protection for sensitive power semiconductor devices used in industrial power electronic systems. Classified as a gR semiconductor fuse, it complies with IEC 60269-1 and IEC 60269-4, delivering rapid interruption of overload and short-circuit faults to help maximise equipment reliability and minimise downtime.
Manufactured by Mersen, the FR22GR69V25T is ideal for protecting IGBTs, thyristors, diodes and rectifiers used in variable frequency drives, UPS systems, industrial inverters and power conversion equipment. Its integrated striker (trip indicator) provides clear mechanical indication after fuse operation and can be used with compatible fuse holders for remote signalling.
With a 25 A current rating, a 690 V AC IEC / 700 V AC UL voltage rating and a compact 22 × 58 mm cylindrical body, the FR22GR69V25T combines dependable semiconductor protection with easy installation in industrial control panels and electrical equipment.
Key Advantages
- Fast-acting gR semiconductor protection fuse.
- 25 A rated current for industrial power electronics.
- 690 V AC IEC / 700 V AC UL voltage rating.
- Integrated striker (trip indicator) for fuse status indication.
- Full-range protection against overloads and short circuits.
- Compact 22 × 58 mm cylindrical construction.
Key Features
- Mersen Protistor® Series.
- Catalogue number: FR22GR69V25T.
- Item number: Z1018623.
- gR utilisation category.
- 25 A rated current.
- 690 V AC IEC / 700 V AC UL rated voltage.
- 22 × 58 mm cylindrical ceramic fuse.
- Integrated striker for indication and optional remote signalling.
Reliable Semiconductor Protection for Industrial Equipment
The Mersen FR22GR69V25T has been engineered to rapidly interrupt excessive fault currents before they can damage costly semiconductor devices. Its current-limiting characteristics minimise thermal and electrical stress, helping extend equipment life and improve overall system reliability.
The integrated striker provides positive indication when the fuse has operated, enabling faster maintenance and supporting remote indication systems where compatible fuse holders are installed. As a gR class fuse, it offers full-range protection against both overloads and short circuits.
Typical Applications
- Variable frequency drives (VFDs).
- Industrial motor drives.
- UPS systems.
- Industrial inverters.
- Power converters and rectifiers.
- Protection of IGBTs, thyristors and other semiconductor devices.
