Why Choose the Mersen F089498 Protistor® High-Speed Fuse?
The Mersen F089498, also identified by catalogue number FD20GB100V32T, is a high-speed cylindrical fuse developed specifically for the protection of sensitive semiconductor devices and DC auxiliary circuits. Part of the Mersen Protistor® 20 × 127 mm gR series, it delivers extremely fast, full-range protection against damaging overload and short-circuit currents.
This fuse combines low let-through energy with strong current-limiting performance, helping reduce the thermal and electrical stress placed on valuable power electronic components. Its gRB characteristic makes it particularly suitable for control circuits, measuring equipment, monitoring devices and other DC auxiliary systems where rapid fault clearance is essential.
With a rated current of 32 A, a rated voltage of 1000 V DC and a maximum breaking capacity of 100 kA DC, the F089498 provides dependable protection in demanding industrial installations. Its integrated striker offers a clear indication when the fuse has operated and can support remote status monitoring when used with compatible fuse holders or microswitch accessories.
Key Advantages
- High-speed semiconductor protection fuse for demanding DC circuits.
- 32 A rated current for auxiliary and control applications.
- 1000 V DC voltage rating for high-voltage systems.
- High 100 kA DC breaking capacity.
- Low I²t performance helps minimise damage to semiconductor devices.
- Integrated striker indication supports rapid fault identification.
Key Features
- Mersen Protistor® high-speed cylindrical fuse range.
- 32 A rated current.
- 1000 V DC IEC rated voltage.
- 100 kA maximum DC breaking capacity.
- gR full-range semiconductor protection class.
- gRB fuse characteristic.
- Compact 20 × 127 mm cylindrical construction.
- Integrated striker for operated-fuse indication.
Reliable Protection for High-Voltage DC Circuits
High-speed fuses such as the Mersen F089498 are designed to interrupt damaging fault currents before excessive energy reaches vulnerable semiconductor devices. Their low I²t performance and extremely fast response provide more effective protection for power electronic equipment than conventional general-purpose industrial fuse-links.
The F089498 provides full-range protection for DC auxiliary circuits, control equipment, measuring devices and monitoring systems. Its high breaking capacity enables it to safely interrupt substantial prospective fault currents, while the striker mechanism helps maintenance teams identify an operated fuse quickly.
Typical Applications
- Industrial DC auxiliary circuits.
- Control, measuring and monitoring equipment.
- Power converters and rectifiers.
- Variable speed drives and industrial inverters.
- Battery energy storage systems.
- Semiconductor and power electronic protection.
