Why Choose the Mersen FR22AR69V50 Protistor® High-Speed Fuse?
The Mersen FR22AR69V50, also identified by item number B1027319, is a Protistor® high-speed cylindrical semiconductor fuse engineered to provide rapid short-circuit protection for sensitive power semiconductor devices. Designed in accordance with IEC 60269-4, this ultra-fast aR fuse safeguards IGBTs, thyristors, diodes and rectifiers used in industrial power electronic equipment.
Part of the trusted Mersen Protistor® 22 × 58 mm aR range, the FR22AR69V50 combines exceptional current-limiting performance with a high breaking capacity and low let-through energy. Its compact cylindrical construction makes it ideal for use in industrial drives, UPS systems, converters and renewable energy applications where reliable semiconductor protection is essential.
With a 50 A rated current, 690 V AC IEC / 700 V AC UL voltage rating and 160 kA breaking capacity, the FR22AR69V50 delivers dependable protection against high fault currents. This version is supplied without a striker, making it suitable for installations where remote fuse indication is not required.
Key Advantages
- Ultra-fast aR semiconductor protection fuse.
- 50 A rated current for industrial power electronics.
- 690 V AC IEC / 700 V AC UL voltage rating.
- 160 kA breaking capacity for reliable fault interruption.
- Low let-through energy helps protect sensitive semiconductor devices.
- Compact 22 × 58 mm cylindrical design for standard fuse holders.
Key Features
- Mersen Protistor® semiconductor protection fuse.
- Item number: B1027319.
- Catalogue number: FR22AR69V50.
- 50 A rated current.
- 690 V AC IEC / 700 V AC UL rated voltage.
- aR utilisation category for short-circuit semiconductor protection.
- 160 kA maximum AC breaking capacity.
- Current-limiting high-speed operation.
- Silver-plated copper ferrule terminals.
- Ceramic fuse body.
- RoHS compliant.
Reliable Protection for Power Electronics
The Mersen FR22AR69V50 is engineered to interrupt high fault currents before excessive energy reaches valuable semiconductor components. Its ultra-fast aR operating characteristic provides effective short-circuit protection while minimising thermal stress on IGBTs, thyristors, rectifiers and other power semiconductors.
Because the aR characteristic provides short-circuit protection only, separate overload protection should be incorporated within the electrical installation. Protistor® fuses are widely specified for industrial automation, motor drives, UPS systems and renewable energy equipment.
Typical Applications
- Variable frequency drives.
- Industrial motor drives.
- Power converters and rectifiers.
- UPS systems.
- Renewable energy inverters.
- Industrial automation equipment.
- Power semiconductor protection.
