Why Choose the Mersen P300462 Protistor® High-Speed Fuse?
The Mersen P300462 is a genuine Protistor® Size 32 high-speed semiconductor fuse developed to provide ultra-fast protection for sensitive power electronic equipment. Designed for demanding industrial applications, it protects diodes, thyristors, IGBTs and other semiconductor devices from damaging short-circuit and overcurrent conditions while helping maximise equipment reliability and minimise costly downtime.
As part of the proven Mersen Protistor® Size 32 range, the P300462 combines a high interrupting capacity with exceptionally low let-through energy. Its robust square body construction, silver-plated contacts and integrated striker indicator make it an ideal solution for variable speed drives, UPS systems, power converters, inverters and other industrial automation equipment.
Rated at 500 A with a 690 V AC IEC / 700 V AC UL voltage rating, the P300462 features flush ends with UNC threaded terminals and an integrated striker for reliable installation and simplified maintenance within industrial power distribution and semiconductor protection systems.
Key Advantages
- Ultra-fast aR semiconductor protection fuse.
- 500 A current rating for demanding industrial applications.
- 690 V AC IEC / 700 V AC UL voltage rating.
- Protects IGBTs, thyristors, diodes and other semiconductor devices.
- High 200 kA breaking capacity for enhanced electrical safety.
- Integrated striker indicator simplifies maintenance and fault detection.
Key Features
- Mersen Protistor® Size 32 series.
- Catalogue number: A070UD32TTI500.
- 500 A rated current.
- 690 V AC IEC / 700 V AC UL operating voltage.
- aR ultra-fast semiconductor protection characteristic.
- Flush ends with UNC threaded terminals.
- Integrated striker indicator.
- Silver-plated contacts with ceramic square body construction.
Reliable Protection for Power Electronics
High-speed semiconductor fuses are engineered to interrupt fault currents before expensive power electronic components can be damaged. The Mersen Protistor® range delivers exceptionally low I²t values and rapid fault clearance, helping extend equipment life while reducing maintenance costs and unplanned downtime.
The P300462 is widely specified by OEMs and industrial engineers for protecting variable speed drives, rectifiers, inverters, UPS systems and power conversion equipment operating in demanding industrial environments.
Typical Applications
- Variable speed drives (VSDs).
- Industrial power converters.
- Uninterruptible power supplies (UPS).
- Motor drives and soft starters.
- Rectifiers and inverters.
- Industrial automation and power distribution systems.
