Why Choose the Mersen FR22AR69V32 Protistor® High-Speed Fuse?
The Mersen FR22AR69V32 is a compact Protistor® high-speed cylindrical fuse designed to protect sensitive power semiconductor devices against damaging short-circuit currents. Its aR utilisation category provides partial-range protection specifically engineered for semiconductor applications where extremely rapid fault interruption and low let-through energy are required.
Manufactured by Mersen, the FR22AR69V32 helps protect IGBTs, thyristors, diodes, rectifiers and other power electronic components used in variable frequency drives, industrial inverters, UPS systems and power conversion equipment. Its current-limiting performance helps reduce the thermal and electrical stress imposed on valuable semiconductor devices during fault conditions.
Featuring a rated current of 32 A, a 690 V AC IEC / 700 V AC UL voltage rating and a compact 22 × 58 mm cylindrical body, the FR22AR69V32 is suitable for installation in compatible fuse holders within industrial control panels and electrical assemblies.
Key Advantages
- High-speed aR semiconductor protection fuse.
- 32 A rated current for industrial power electronic circuits.
- 690 V AC IEC / 700 V AC UL voltage rating.
- Rapid short-circuit interruption helps protect sensitive semiconductors.
- Current-limiting operation reduces damaging let-through energy.
- Compact 22 × 58 mm cylindrical construction.
Key Features
- Mersen Protistor® high-speed fuse range.
- Catalogue reference: FR22AR69V32.
- aR utilisation category.
- 32 A rated current.
- 690 V AC IEC / 700 V AC UL rated voltage.
- 22 × 58 mm cylindrical ceramic fuse body.
- Fast fault-clearing characteristics.
- Designed for use in compatible cylindrical fuse holders.
Fast Short-Circuit Protection for Power Semiconductors
Power semiconductor devices can sustain irreversible damage within milliseconds when subjected to excessive fault current. The Mersen FR22AR69V32 is engineered to operate rapidly during high-current faults, limiting the peak current and total energy that pass through the protected circuit.
The aR classification indicates that the fuse is intended primarily for short-circuit protection of semiconductor devices. It should therefore be coordinated with suitable overload protection where protection against sustained overcurrent conditions is also required.
Typical Applications
- Variable frequency drives and motor-control systems.
- Industrial inverters and power converters.
- UPS and battery power systems.
- Rectifier and diode assemblies.
- Industrial automation and machinery panels.
- Protection of IGBTs, thyristors and other power semiconductors.
