Why Choose the Mersen FR14AR69V32T High-Speed Semiconductor Fuse?
The Mersen FR14AR69V32T is a premium Protistor® high-speed cylindrical semiconductor fuse engineered to provide fast, reliable short-circuit protection for sensitive power semiconductor devices. Part of the Mersen Protistor® 14 × 51 mm aR series, this fuse features an integrated striker indicator for rapid fault indication and simplified maintenance. Rated at 32 A and 690 V AC (IEC) / 700 V AC (UL), it is ideal for protecting IGBTs, thyristors, diodes and other semiconductor devices in demanding industrial applications.
Designed in accordance with IEC 60269-4, the FR14AR69V32T delivers exceptional current-limiting performance with a high breaking capacity to minimise damage during fault conditions. Its compact cylindrical design enables easy installation into compatible fuse holders used throughout industrial power conversion equipment.
The integrated striker provides clear indication when the fuse has operated and can be connected to compatible monitoring systems, helping maintenance engineers quickly identify fault conditions and reduce equipment downtime.
Key Advantages
- High-speed aR semiconductor protection fuse.
- 32 A current rating.
- 690 V AC IEC / 700 V AC UL rated.
- Integrated striker for fuse operation indication.
- Excellent current-limiting performance.
- Compact 14 × 51 mm cylindrical construction.
Key Features
- Mersen Protistor® 14 × 51 mm aR series.
- 32 A rated current.
- 690 V AC IEC / 700 V AC UL rated voltage.
- aR utilisation category for semiconductor protection.
- Integrated striker (trip indicator).
- 160 kA AC breaking capacity.
- RoHS compliant.
- Designed for industrial power electronics.
Designed for High-Speed Semiconductor Protection
The FR14AR69V32T rapidly interrupts fault currents before they can damage expensive semiconductor devices. Its low let-through energy and high interrupting capacity improve equipment reliability while helping to reduce maintenance costs and unplanned production downtime.
The integrated striker simplifies maintenance by providing immediate indication of fuse operation and can be connected to auxiliary monitoring equipment for remote status indication.
Typical Applications
- Variable frequency drives (VFDs).
- Industrial inverters.
- Power converters.
- Servo drives.
- UPS systems.
- Industrial automation equipment.
- Rectifiers and motor control equipment.
