Why Choose the Mersen FR14AR69V10T High-Speed Semiconductor Fuse?
The Mersen FR14AR69V10T is a Protistor® high-speed cylindrical semiconductor fuse designed to protect sensitive power semiconductor devices against damaging short-circuit currents. Its rapid current-limiting operation helps reduce the thermal and electrical energy reaching components such as IGBTs, thyristors, diodes and rectifiers.
Part of Mersen’s 14 × 51 mm aR semiconductor fuse range, the FR14AR69V10T is rated at 10 A and 690 V AC. The T suffix identifies the version fitted with a striker indicator, allowing fuse operation to be identified visually or used with compatible signalling and microswitch accessories.
The fuse is suitable for industrial drives, inverters, power converters, UPS equipment and other power electronic systems requiring fast short-circuit protection. As an aR partial-range fuse, it is intended primarily for semiconductor short-circuit protection and should be used alongside suitable overload protection where required.
Key Advantages
- High-speed aR semiconductor protection.
- 10 A rated current for low-current power electronic circuits.
- 690 V AC rated voltage.
- Integrated striker indicator for fuse-status signalling.
- Rapid current limitation helps minimise semiconductor damage.
- Compact 14 × 51 mm cylindrical format.
- Suitable for demanding industrial power electronic applications.
Key Features
- Manufacturer: Mersen.
- Series: Protistor®.
- Manufacturer reference: FR14AR69V10T.
- Rated current: 10 A.
- Rated voltage: 690 V AC.
- Fuse utilisation category: aR.
- Fuse dimensions: 14 × 51 mm.
- Indicator: Striker-equipped version.
- Designed for high-speed semiconductor protection.
Fast Protection for Sensitive Power Electronics
Semiconductor devices can be damaged in a fraction of the time required for a conventional industrial fuse to operate. High-speed Protistor® fuses are engineered to interrupt short-circuit currents quickly and limit the peak current and let-through energy experienced by sensitive electronic components.
The aR operating characteristic provides partial-range protection against high fault currents. It does not normally provide full overload protection, so the wider electrical installation should include appropriate overload protection selected for the equipment and operating conditions.
Typical Applications
- Variable-speed motor drives.
- Industrial frequency converters.
- Power inverters.
- Uninterruptible power supplies.
- Industrial rectifiers.
- Power conversion equipment.
- Soft starters and motor controls.
- IGBT, SCR, diode and thyristor protection.
- Renewable-energy conversion systems.
