Why Choose the Mersen FR22AR69V100T High-Speed Fuse?
The Mersen FR22AR69V100T is a high-performance 100 A cylindrical semiconductor fuse designed to provide rapid short-circuit protection for sensitive power electronic components. Part of the trusted Mersen Protistor® 22 × 58 mm aR fuse series, it is engineered for industrial systems where fast fault interruption is essential for protecting valuable semiconductor equipment.
This high-speed fuse features an aR operating characteristic, providing partial-range protection against damaging short-circuit currents. Its low energy let-through and high interrupting capacity help protect components such as diodes, thyristors, rectifiers, inverters and variable frequency drives from severe thermal and electrical stress.
With a rated current of 100 A and an IEC rated voltage of 690 V AC, the FR22AR69V100T is suitable for demanding industrial power conversion and automation applications. The integrated striker indication system provides a clear mechanical indication when the fuse has operated and can support compatible remote signalling or switching arrangements.
Key Advantages
- High-speed semiconductor protection fuse for industrial power electronics.
- 100 A rated current for high-power electrical applications.
- 690 V AC IEC voltage rating for demanding industrial systems.
- Extremely high 160 kA AC breaking capacity.
- Integrated striker indication system supports rapid fault identification.
- Compact 22 × 58 mm cylindrical format for straightforward installation.
Key Features
- Mersen Protistor® high-speed fuse series.
- 100 A ampere rating.
- 690 V AC IEC rated voltage.
- aR speed and operating characteristic.
- 160 kA maximum AC interrupting capacity.
- 1,890 A²s melting I²t.
- 13,000 A²s clearing I²t at rated voltage.
- Integrated striker for fuse operation indication.
- Durable ceramic body with silver-plated copper ferrule terminals.
Reliable Protection for Power Semiconductors
Power semiconductor devices can be permanently damaged by high fault currents before standard circuit protection devices have time to operate. The Mersen FR22AR69V100T is designed to react rapidly and limit the thermal energy passed through to connected components, helping reduce equipment damage and costly production downtime.
Its aR classification provides high-speed partial-range short-circuit protection and is typically used alongside suitable overload protection. The fuse is particularly well suited to power conversion equipment, industrial motor drives and electronic control systems that require reliable fault isolation and a clear indication when fuse replacement is necessary.
Typical Applications
- Variable frequency drives and industrial motor controls.
- Power inverters and frequency converters.
- Rectifiers, thyristors and diode assemblies.
- Uninterruptible power supply systems.
- Industrial battery chargers and power supplies.
- Automation equipment and electrical control panels.
- Renewable energy and energy storage systems.
