Why Choose the Mersen X300584 Protistor® High-Speed Fuse?
The Mersen X300584 is a premium square body semiconductor protection fuse engineered to provide ultra-fast protection for sensitive power semiconductor devices including IGBTs, thyristors, MOSFETs and diodes. As part of the proven Mersen Protistor® Size 30 aR series, it delivers exceptional short-circuit protection for industrial power conversion and automation systems.
Designed with low energy let-through characteristics and high interrupting capacity, the X300584 helps minimise damage to expensive semiconductor components while improving equipment reliability and reducing downtime. Its square body construction incorporates silver-plated contacts, flush-end UNC threaded terminals and an integrated striker indicator for simplified maintenance and remote status indication.
With a 550 A current rating and a 690 V AC IEC / 700 V AC UL voltage rating, the Mersen X300584 is ideally suited for protecting industrial drives, UPS systems, converters, renewable energy equipment and other demanding power electronic applications.
Key Advantages
- Ultra-fast aR semiconductor protection fuse.
- 550 A current rating for demanding industrial applications.
- 690 V AC IEC / 700 V AC UL voltage capability.
- 200 kA breaking capacity for outstanding fault protection.
- Integrated striker indicator for simplified maintenance.
- Silver-plated contact surfaces provide excellent electrical performance.
Key Features
- Mersen Protistor® Size 30 series.
- 550 A rated current.
- 690 V AC IEC / 700 V AC UL rated voltage.
- aR ultra-fast operating characteristic.
- Integrated striker indication system.
- Flush-end UNC threaded terminals.
- Square body bolted construction.
- Designed specifically for semiconductor protection.
Reliable Semiconductor Protection
High-speed semiconductor fuses are specifically engineered to interrupt fault currents before expensive semiconductor devices can be damaged. Their ultra-fast response minimises thermal stress while helping maintain the performance and reliability of industrial power conversion equipment.
The Mersen Protistor® range is trusted worldwide across industrial automation, renewable energy, transportation and manufacturing industries, providing dependable protection for drives, converters, rectifiers and UPS systems.
Typical Applications
- Variable frequency drives (VFDs).
- Industrial motor drives.
- Power converters and rectifiers.
- UPS systems.
- Renewable energy inverters.
- Industrial automation and power electronic equipment.
