Why Choose the Mersen FR14AR69V10 High-Speed Fuse?
The Mersen FR14AR69V10 is a high-performance 10 A cylindrical semiconductor fuse designed to provide ultra-fast short-circuit protection for sensitive power electronic equipment. As part of the trusted Mersen Protistor® 14 × 51 mm aR fuse series, it is engineered to protect semiconductor devices in demanding industrial applications while complying with IEC 60269-4.
Featuring an aR operating characteristic, this high-speed fuse provides partial-range protection against damaging short-circuit currents. Its low let-through energy and exceptionally high interrupting capacity help safeguard IGBTs, thyristors, rectifiers, inverters, variable frequency drives and other critical power electronic components from catastrophic electrical faults.
With a rated current of 10 A and an IEC rated voltage of 690 V AC, the FR14AR69V10 is ideal for industrial automation, motor control and power conversion systems where fast semiconductor protection is essential. This version is supplied without a striker indicator.
Key Advantages
- High-speed semiconductor protection fuse.
- 10 A rated current for precise circuit protection.
- 690 V AC IEC and 700 V AC UL voltage ratings.
- aR operating characteristic for semiconductor short-circuit protection.
- 160 kA AC breaking capacity.
- Compact 14 × 51 mm cylindrical format for standard fuse holders.
Key Features
- Mersen Protistor® high-speed fuse series.
- 10 A ampere rating.
- 690 V AC IEC rated voltage.
- 700 V AC UL recognised.
- aR speed and operating characteristic.
- 160 kA AC interrupting capacity.
- 4.3 A²s pre-arcing I²t.
- 40 A²s clearing I²t.
- Ceramic body with silver-plated copper ferrules.
Fast Protection for Sensitive Power Electronics
The Mersen FR14AR69V10 rapidly interrupts high fault currents before they can damage sensitive semiconductor devices. Its extremely fast operation helps minimise thermal stress and prolong the service life of expensive electronic components used in industrial power conversion systems.
Its aR operating characteristic is specifically intended for semiconductor short-circuit protection and should be used together with suitable overload protection where required. This makes the FR14AR69V10 an excellent choice for industrial drives, UPS systems, converters and similar equipment.
Typical Applications
- Variable frequency drives.
- Industrial motor control equipment.
- Power converters and inverters.
- Rectifiers and thyristor assemblies.
- UPS systems.
- Industrial automation equipment.
- Semiconductor protection circuits.
