Why Choose the Mersen FR22AR69V25T Protistor® High-Speed Fuse?
The Mersen FR22AR69V25T, also identified by item number B1056667, is a Protistor® high-speed cylindrical semiconductor fuse with striker designed to provide ultra-fast short-circuit protection for sensitive power semiconductor devices. Manufactured in accordance with IEC 60269-4, this fuse is ideal for protecting IGBTs, thyristors, rectifiers and power diodes used in industrial power electronic equipment.
As part of the trusted Mersen Protistor® 22 × 58 mm aR range, the FR22AR69V25T combines exceptional current-limiting performance with a high breaking capacity and low let-through energy. The integrated mechanical striker provides reliable fuse-operation indication for compatible fuse holders and monitoring systems, helping to reduce maintenance time and improve equipment availability.
With a 25 A rated current, 690 V AC IEC / 700 V AC UL voltage rating and a 160 kA breaking capacity, the FR22AR69V25T is ideally suited to industrial drives, UPS systems, converters, inverters and renewable energy equipment requiring dependable semiconductor protection.
Key Advantages
- Ultra-fast aR semiconductor protection fuse.
- 25 A rated current for industrial power electronics.
- 690 V AC IEC / 700 V AC UL voltage rating.
- Integrated mechanical striker for fuse-operation indication.
- 160 kA breaking capacity for dependable fault interruption.
- Compact 22 × 58 mm cylindrical design for standard fuse holders.
Key Features
- Mersen Protistor® semiconductor protection fuse.
- Item number: B1056667.
- Catalogue number: FR22AR69V25T.
- 25 A rated current.
- 690 V AC IEC / 700 V AC UL rated voltage.
- aR utilisation category for semiconductor short-circuit protection.
- 160 kA maximum AC breaking capacity.
- Integrated mechanical striker.
- Silver-plated copper ferrule terminals.
- Ceramic fuse body.
- RoHS compliant.
Reliable Protection for Power Electronics
The Mersen FR22AR69V25T is engineered to interrupt high fault currents before excessive energy can damage expensive semiconductor components. Its ultra-fast aR operating characteristic minimises thermal stress on IGBTs, thyristors and other power semiconductors, helping to maximise equipment reliability and service life.
Because the aR characteristic provides short-circuit protection only, separate overload protection should be incorporated elsewhere within the electrical installation. The integrated striker provides positive indication when the fuse has operated, simplifying maintenance and fault diagnosis.
Typical Applications
- Variable frequency drives.
- Industrial motor drives.
- Power converters and rectifiers.
- UPS systems.
- Renewable energy inverters.
- Industrial automation equipment.
- Power semiconductor protection.
