Why Choose the Mersen H098585 Protistor® High-Speed Fuse?
The Mersen H098585 is a high-performance Protistor® cylindrical semiconductor fuse designed to protect sensitive power electronic components in demanding DC systems. Rated at 0.8 A and 660 V DC, it provides rapid fault interruption to help minimise the thermal and electrical energy transferred to semiconductor devices during short-circuit conditions.
Part of the Mersen Protistor® 27 × 60 mm gR (gRB) series, the H098585 has been developed for the protection requirements of modern DC equipment. Its low I²t characteristics help limit damage to protected components, while reduced power losses and dependable performance at elevated operating temperatures support long service life.
The fuse incorporates an integrated striker indicator and provides a maximum rated breaking capacity of 50 kA DC. Its compact cylindrical format and clip-mounted design make it particularly suitable for railway power circuits, auxiliary systems, industrial converters and other DC power electronic applications.
Key Advantages
- High-speed gR semiconductor protection characteristic.
- 0.8 A rated current for sensitive electronic circuits.
- 660 V DC voltage rating for industrial DC systems.
- 50 kA DC breaking capacity for reliable fault interruption.
- Low I²t performance helps minimise semiconductor damage.
- Integrated striker provides clear fuse-operation indication.
Key Features
- Mersen Protistor® high-speed fuse series.
- 0.8 A rated current.
- 660 V DC rated operating voltage.
- gR operating class with gRB design characteristics.
- 27 × 60 mm cylindrical fuse format.
- Integrated striker indication mechanism.
- Clip mounting for compatible cylindrical fuse holders.
- Low let-through energy during short-circuit conditions.
- Designed for operation in elevated-temperature DC equipment.
- RoHS compliant.
High-Speed Protection for Sensitive DC Equipment
Power semiconductor components can be damaged by fault energy before conventional protective devices have time to respond. The Mersen H098585 is engineered to interrupt damaging DC fault currents rapidly, reducing the electrical and thermal stress imposed on diodes, thyristors, rectifiers and other sensitive semiconductor assemblies.
Its low current rating makes it suitable for protecting sensitive control and auxiliary circuits, while the gR characteristic provides high-speed semiconductor protection. The integrated striker also simplifies fault identification and may be used with compatible signalling or switching accessories to support system monitoring and maintenance.
Typical Applications
- Railway power and auxiliary circuits.
- Industrial DC power converters.
- Traction and transportation equipment.
- DC control and signalling circuits.
- Rectifier and inverter systems.
- Industrial automation power supplies.
- Protection of diodes, thyristors and semiconductor modules.
