Why Choose the Mersen X301826 Protistor® High-Speed Fuse?
The Mersen X301826 is a premium Protistor® square body high-speed semiconductor fuse engineered to provide exceptionally fast short circuit protection for sensitive power electronic equipment. Designed for demanding industrial environments, it protects semiconductors including IGBTs, thyristors, diodes and power converters from destructive fault currents while helping maximise equipment uptime.
As part of the Mersen Protistor® Size 73 series, the X301826 delivers outstanding current limiting performance, high breaking capacity and reliable operation in industrial motor drives, renewable energy systems, UPS installations and power conversion equipment. Its robust square body construction and integrated striker allow dependable protection and simplified maintenance.
With a rated current of 800 A and a 1250 V AC voltage rating, the X301826 is designed for high-power industrial applications requiring rapid semiconductor protection. The split DIN 110 blade terminals provide secure installation in compatible fuse bases and switchgear assemblies.
Key Advantages
- Ultra-fast aR semiconductor protection fuse.
- 800 A rated current for demanding industrial applications.
- 1250 V AC voltage rating suitable for high-power equipment.
- Protects IGBTs, thyristors, diodes and other semiconductor devices.
- Integrated striker for visual indication and remote signalling.
- High breaking capacity minimises damage during fault conditions.
Key Features
- Mersen Protistor® Size 73 series.
- 800 A current rating.
- 1250 V AC rated voltage.
- aR ultra-fast operating characteristic.
- Split DIN 110 blade terminals.
- Integrated mechanical striker.
- Silver-plated contacts for improved conductivity.
- Designed for industrial semiconductor protection.
Reliable Protection for High-Power Electronics
The Mersen X301826 is specifically engineered to interrupt fault currents before they can damage valuable semiconductor devices. Its low let-through energy helps extend equipment life, reduce maintenance costs and improve the reliability of critical industrial power systems.
Protistor® semiconductor fuses are widely specified by OEMs, panel builders and industrial engineers where dependable high-speed protection is essential for modern power electronics.
Typical Applications
- Variable frequency drives (VFDs).
- Industrial power converters.
- UPS systems.
- Renewable energy inverters.
- Soft starters and motor control equipment.
- Industrial automation and process control systems.
