Why Choose the Mersen Q098592 Protistor High-Speed Fuse?
The Mersen Q098592, catalogue number FD27GB66V3,15T, is a high-speed cylindrical semiconductor fuse designed to protect sensitive DC power electronic equipment against damaging overcurrents and short-circuit faults. Part of the Mersen Protistor® 27 × 60 mm gR (gRB) series, it provides dependable protection for railway power circuits, auxiliary systems and industrial DC equipment.
This fuse is engineered with low let-through energy to help minimise thermal and mechanical damage to semiconductor components during fault conditions. Its low power losses and ability to operate reliably at elevated temperatures make it particularly suitable for modern DC equipment requiring efficient, long-lasting circuit protection.
With a rated current of 3.15 A, a rated voltage of 660 V DC and a maximum breaking capacity of 50 kA, the Q098592 is suitable for protecting low-current semiconductor circuits, converters, rectifiers and railway auxiliary equipment. Its integrated striker provides clear fuse operation indication for compatible monitoring and signalling systems.
Key Advantages
- High-speed gR semiconductor fuse for full-range circuit protection.
- 3.15 A rated current for sensitive power electronic circuits.
- 660 V DC IEC voltage rating for industrial and railway systems.
- Low I²t performance helps reduce damage to semiconductor components.
- Maximum DC breaking capacity of 50 kA.
- Integrated striker indicator supports fuse status monitoring.
- Low power dissipation helps improve equipment efficiency.
- Compact cylindrical design simplifies installation in control equipment.
Key Features
- Mersen Protistor® high-speed fuse series.
- Manufacturer item number Q098592.
- Catalogue number FD27GB66V3,15T.
- 3.15 A rated current.
- 660 V DC IEC rated voltage.
- gR speed and utilisation characteristic.
- gRB design for DC semiconductor protection.
- Integrated striker for fuse operation indication.
- 27 × 60 mm cylindrical fuse format.
- Silver-plated copper ferrule terminals.
- Clip-mounting configuration.
- RoHS-compliant construction.
Reliable Protection for DC Semiconductor Circuits
Semiconductor components can be permanently damaged within milliseconds when exposed to excessive current. The Mersen Q098592 responds rapidly to electrical faults, limiting the amount of energy that passes through protected devices and helping prevent extensive damage to converters, rectifiers and associated control equipment.
Its gR characteristic provides full-range protection against overload and short-circuit currents. Combined with its compact ceramic construction, low power dissipation and integrated striker, the fuse is well suited to railway auxiliary circuits and industrial DC systems where reliable fault protection and clear fuse status indication are required.
Typical Applications
- Railway power and auxiliary circuits.
- DC semiconductor protection systems.
- Industrial power converters.
- Rectifier and inverter assemblies.
- DC control and signalling equipment.
- Power supply protection circuits.
- Industrial automation panels.
- Equipment using diodes, thyristors or power transistors.
