Why Choose the Mersen L076968 High-Speed Semiconductor Fuse?
The Mersen L076968 is a high-performance Protistor® high-speed cylindrical fuse-link designed to protect sensitive power semiconductor devices against damaging overloads and short circuits. Identified by catalogue number FD22GB44V50T, it belongs to Mersen’s 22 × 58 mm gLB range developed specifically for demanding DC power applications.
This fuse-link provides full-range gLB protection, enabling it to clear overloads as well as high-level fault currents. Its rapid operating characteristics help reduce electrical and thermal stress on protected components, improving safety and supporting selective coordination with other fuses in the distribution circuit.
With a rated current of 50 A, an IEC voltage rating of 440 V DC and a compact 22 × 58 mm cylindrical format, the Mersen L076968 is suitable for rectifiers, inverters, uninterruptible power supplies and railway auxiliary circuits. Its integrated striker provides clear fuse-operation indication for easier inspection and maintenance.
Key Advantages
- High-speed fuse-link designed for power semiconductor protection.
- 50 A rated current for industrial DC power circuits.
- 440 V DC IEC voltage rating.
- gLB characteristic provides protection against overloads and short circuits.
- Supports selective coordination with distribution circuit fuses.
- Integrated striker indicator simplifies fuse-status identification.
Key Features
- Mersen Protistor® semiconductor fuse range.
- FD22GB44V50T catalogue number.
- 50 A rated current.
- 440 V DC rated voltage.
- gLB high-speed semiconductor protection characteristic.
- Compact 22 × 58 mm cylindrical fuse-link design.
- Integrated mechanical striker indication.
- Clip-mounted installation format.
- Ferrule terminals manufactured from silver-plated copper.
- RoHS-compliant ceramic construction.
Reliable Protection for DC Power Electronics
Power semiconductor components can be damaged by overloads and short-circuit currents that develop extremely quickly. High-speed fuse-links such as the Mersen L076968 interrupt these faults before excessive energy reaches sensitive components, helping protect diodes, thyristors, rectifiers, inverters and related power electronic assemblies.
The Mersen Protistor® 22 × 58 gLB range combines full-range fault protection with compact cylindrical construction. Its ability to clear overloads, improve circuit safety and support selective coordination makes it suitable for industrial conversion equipment, traction auxiliary circuits and other critical DC installations.
Typical Applications
- Industrial rectifiers.
- Power inverters and converters.
- Uninterruptible power supply systems.
- Railway traction auxiliary circuits.
- Reduced-voltage motor starters.
- Power semiconductor protection circuits.
