Why Choose the Mersen R301591 Protistor® High-Speed Fuse?
The Mersen R301591, catalogue number PC70GB69V160D1A, is a premium square body semiconductor protection fuse engineered to provide exceptionally fast fault interruption for sensitive power electronic equipment. Part of the renowned Mersen Protistor® Size 70 gR 690 VAC series, it delivers full-range protection against overloads and short circuits, helping maximise the reliability of industrial power conversion systems.
Manufactured with pure silver fuse elements embedded in high-grade silica sand, the R301591 provides outstanding current limiting performance and low let-through energy. Silver-plated contact surfaces and an integrated striker indicator further enhance reliability, making it an excellent choice for critical industrial applications where equipment protection and uptime are essential.
With a rated current of 160 A and a 690 V AC IEC voltage rating, the Mersen R301591 is ideally suited for protecting semiconductor devices in variable speed drives, converters, UPS systems and renewable energy installations.
Key Advantages
- High-speed gR semiconductor protection fuse providing full-range protection.
- 160 A current rating for demanding industrial applications.
- 690 V AC IEC rated voltage for power conversion equipment.
- Integrated striker indicator for monitoring and remote signalling.
- DIN 110 blade terminals enable secure bolted installation.
- Low I²t characteristics help minimise damage to expensive semiconductor components.
Key Features
- Mersen Protistor® Size 70 gR series.
- Catalogue number: PC70GB69V160D1A.
- 160 A rated current.
- 690 V AC IEC voltage rating.
- Full-range gR protection for semiconductor devices.
- Integrated striker indication system.
- Silver-plated copper DIN 110 blade terminals.
- Square body bolted fuse design.
Reliable Protection for Critical Power Electronics
High-speed semiconductor fuses are specifically designed to interrupt fault currents before sensitive semiconductor devices suffer thermal or electrical damage. Their exceptional current limiting performance helps extend equipment life while reducing downtime and maintenance costs.
The Mersen Protistor® range is widely specified for industrial automation, renewable energy, motor drives and power conversion systems where dependable protection is critical to maintaining safe and reliable operation.
Typical Applications
- Variable frequency drives (VFDs).
- Industrial power converters.
- UPS and backup power systems.
- Renewable energy inverters.
- Motor control centres.
- Industrial automation equipment.
