Why Choose the Mersen X300262 Protistor® High-Speed Fuse?
The Mersen X300262 is a premium square body semiconductor protection fuse engineered to deliver ultra-fast protection for sensitive power semiconductor devices including IGBTs, thyristors and diodes. As part of the proven Mersen Protistor® Size 33 aR series, it provides exceptional short-circuit protection for demanding industrial power conversion and automation systems.
Designed with low energy let-through characteristics and a high interrupting capacity, the X300262 helps minimise damage to expensive semiconductor components while improving equipment reliability and reducing downtime. Its robust square body construction, silver-plated contacts and integrated striker indicator make it ideal for use in critical industrial electrical installations.
With a rated current of 800 A and a 690 V AC IEC / 700 V AC UL voltage rating, the Mersen X300262 is ideally suited for protecting industrial drives, UPS systems, power converters, renewable energy inverters and other high-power electronic equipment.
Key Advantages
- Ultra-fast aR semiconductor protection fuse for sensitive electronic equipment.
- 800 A current rating for high-power industrial applications.
- 690 V AC IEC / 700 V AC UL voltage capability.
- 200 kA breaking capacity provides excellent fault protection.
- Integrated striker indicator for simplified maintenance.
- Silver-plated terminals ensure reliable electrical performance.
Key Features
- Mersen Protistor® Size 33 series.
- 800 A rated current.
- 690 V AC IEC / 700 V AC UL rated voltage.
- aR ultra-fast operating characteristic.
- Integrated striker indication system.
- DIN 110 blade terminals.
- Square body bolted construction.
- Designed for semiconductor protection applications.
Reliable Semiconductor Protection
High-speed semiconductor fuses are specifically engineered to interrupt fault currents before damage can occur to expensive power electronic devices. Their ultra-fast response helps minimise thermal stress while improving the reliability and service life of industrial power conversion equipment.
The Mersen Protistor® range is trusted worldwide across industrial automation, renewable energy, transportation and heavy industry, providing dependable protection for modern semiconductor-based systems.
Typical Applications
- Variable frequency drives (VFDs).
- Industrial motor drives.
- UPS systems.
- Power converters and rectifiers.
- Renewable energy inverters.
- Industrial automation and power electronics.
