Why Choose the Mersen FR22AR69V25 Protistor® High-Speed Fuse?
The Mersen FR22AR69V25 is a compact and highly responsive Protistor® high-speed semiconductor fuse designed to protect sensitive power electronic components against damaging short-circuit currents. Its aR utilisation category makes it particularly suitable for the partial-range protection of semiconductor devices used in industrial power conversion and motor-control equipment.
Manufactured by Mersen, the FR22AR69V25 provides rapid fault-current interruption to help reduce thermal and electrical stress on IGBTs, thyristors, diodes, rectifiers and other valuable semiconductor components. Its cylindrical format supports straightforward integration into compatible fuse holders within machinery, automation panels and power electronic systems.
With a rated current of 25 A, a rated voltage of 690 V AC and a compact 22 × 58 mm cylindrical body, the FR22AR69V25 is well suited to industrial installations requiring dependable semiconductor short-circuit protection without occupying excessive panel space.
Key Advantages
- Fast-acting aR semiconductor protection fuse.
- 25 A rated current for industrial power electronic circuits.
- 690 V AC voltage rating for demanding electrical systems.
- Rapid fault clearing helps protect sensitive semiconductor components.
- Compact 22 × 58 mm cylindrical design.
- Suitable for drives, inverters, rectifiers and power converters.
Key Features
- Mersen Protistor® high-speed fuse range.
- 25 A rated current.
- 690 V AC rated voltage.
- aR utilisation category for semiconductor short-circuit protection.
- 22 × 58 mm cylindrical fuse format.
- High-speed operation with low fault-energy let-through.
- Designed for use with compatible cylindrical fuse holders.
- Suitable for industrial power conversion and automation equipment.
Rapid Short-Circuit Protection for Power Semiconductors
Power semiconductor devices can be damaged extremely quickly when exposed to excessive fault current. The Mersen FR22AR69V25 is engineered to operate rapidly during short-circuit conditions, limiting the amount of electrical energy allowed to pass through the protected circuit and helping to minimise damage to connected components.
As an aR class fuse, the FR22AR69V25 provides partial-range protection and is primarily intended for short-circuit protection. Appropriate supplementary overload protection should therefore be incorporated into the wider electrical system where required by the application.
Typical Applications
- Variable frequency drives and motor-control equipment.
- Industrial inverters and power converters.
- Rectifier and diode assemblies.
- Uninterruptible power supply systems.
- Industrial automation and machinery panels.
- Protection of IGBTs, thyristors and other power semiconductors.
