Why Choose the Mersen F301328 Protistor® High-Speed Fuse?
The Mersen F301328 (catalogue number PC72GB69V200TF) is a premium Protistor® Size 72 gR square body high-speed semiconductor protection fuse engineered to provide full-range protection for modern power electronic equipment. Its gR operating class offers protection against both overloads and short-circuit faults, making it ideal for protecting IGBTs, thyristors, diodes and other semiconductor devices used in demanding industrial applications.
Manufactured using pure silver fuse elements embedded in solidified sand, the F301328 delivers exceptionally low let-through energy (I²t), high interrupting capacity and excellent thermal cycling performance. Silver-plated contact surfaces, non-magnetic hardware and an integrated striker indicator ensure dependable operation while allowing optional remote fuse indication using a microswitch.
Rated at 200 A and 690 V AC (IEC), with a 150 kA breaking capacity, the F301328 is ideally suited to industrial drives, power converters, UPS systems, renewable energy installations and other power conversion equipment where reliable semiconductor protection is essential.
Key Advantages
- Full-range gR semiconductor protection against overloads and short circuits.
- 200 A current rating for demanding industrial applications.
- 690 V AC IEC rated voltage.
- 150 kA breaking capacity.
- Flush-end metric threaded terminals for secure installation.
- Integrated striker indicator for remote status indication.
- Low I²t helps minimise stress on expensive semiconductor devices.
Key Features
- Mersen Protistor® Size 72 gR series.
- 200 A rated current.
- 690 V AC IEC operating voltage.
- gR full-range semiconductor protection.
- Square body ceramic construction.
- Flush-end ISO metric threaded terminals.
- Integrated striker indication.
- Excellent cycling capability with low energy let-through.
Complete Semiconductor Protection
The Mersen F301328 is engineered to provide dependable full-range protection for power semiconductor equipment by safely interrupting both overload and short-circuit faults. Its current-limiting design significantly reduces electrical and thermal stress on valuable semiconductor devices, helping maximise equipment reliability while reducing maintenance costs and downtime.
Protistor® gR semiconductor fuses are widely specified by OEMs and electrical engineers for industrial power conversion equipment where dependable semiconductor protection is critical to safe and reliable operation.
Typical Applications
- Variable frequency drives (VFDs).
- Industrial motor drives.
- Power converters.
- Rectifier systems.
- Renewable energy inverter systems.
- UPS systems.
- Industrial automation equipment.
- Protection of IGBTs, thyristors and diode modules.
