Why Choose the Mersen FR22AR69V80 Protistor® High-Speed Fuse?
The Mersen FR22AR69V80, item number D1027321, is a high-performance Protistor® cylindrical semiconductor fuse designed to protect sensitive power semiconductor devices against damaging short-circuit currents. Its ultra-fast aR operating characteristic makes it suitable for safeguarding IGBTs, thyristors, SCRs, diodes and rectifiers used within industrial power electronic equipment.
Manufactured in accordance with IEC 60269-4, this compact 22 × 58 mm fuse offers extremely fast operation, low I²t performance and effective current limitation. These characteristics reduce the thermal and mechanical energy passed to protected components, helping prevent costly equipment damage and minimise production downtime.
Rated at 80 A and 690 V AC under IEC standards, the FR22AR69V80 is supplied without a striker indicator. It is ideal for variable speed drives, UPS systems, inverters, converters and similar power electronic equipment operating at 700 V or below.
Key Advantages
- Ultra-fast aR semiconductor protection.
- 80 A rated current for demanding power electronic applications.
- 690 V AC IEC and 700 V AC UL voltage ratings.
- Low I²t performance reduces thermal stress on semiconductor devices.
- Current-limiting operation helps minimise fault damage.
- 160 kA IEC breaking capacity for high-fault-current installations.
Key Features
- Mersen Protistor® Size 22 × 58 mm fuse-link.
- 80 A current rating.
- aR operating class for semiconductor short-circuit protection.
- Extremely fast-acting fuse element.
- Excellent electrical cycling capability.
- Ceramic body with silver-plated copper ferrule terminals.
- Clip-mounted cylindrical design.
- Supplied without a striker or trip indicator.
Fast, Current-Limiting Semiconductor Protection
Power semiconductor devices can be damaged by fault energy before conventional industrial fuses have time to operate. The Mersen FR22AR69V80 is engineered to clear high short-circuit currents rapidly, limiting the peak current and total energy allowed to reach sensitive electronic components.
Its aR characteristic provides partial-range protection specifically against short circuits. Suitable supplementary overload protection should therefore be incorporated into the equipment or circuit where overload protection is required.
Typical Applications
- Variable frequency and variable speed drives.
- Uninterruptible power supply systems.
- Industrial inverters.
- Power converters and rectifiers.
- Semiconductor power assemblies.
- Industrial automation equipment.
- Renewable energy conversion systems.
- Equipment operating at 700 V AC or below.
