Why Choose the Mersen G075722 Protistor® High-Speed Fuse?
The Mersen G075722 is a high-speed Protistor® cylindrical semiconductor fuse designed to protect sensitive power semiconductor devices in demanding DC power applications. Rated at 10 A and 440 V DC, it provides rapid fault interruption to help limit damaging thermal and electrical energy reaching valuable electronic components.
Part of the Mersen Protistor® 14 × 51 mm gLB series, the G075722 is specifically developed for semiconductor protection. Its gLB operating characteristic enables the fuse to clear overloads and short-circuit currents while supporting selective coordination with other protective devices within the electrical distribution system.
The fuse incorporates a striker indication system that provides a clear mechanical indication when the fuse has operated. Its compact cylindrical ceramic body, silver-plated copper contacts and clip-mounted design make it suitable for integration into compatible fuse holders within rectifiers, inverters, uninterruptible power supplies and industrial control equipment.
Key Advantages
- High-speed gLB semiconductor protection characteristic.
- 10 A rated current for power electronic circuits.
- 440 V DC voltage rating for industrial DC systems.
- Designed to clear both overload and short-circuit currents.
- Integrated striker provides visible or remote fuse-operation indication.
- Compact cylindrical format supports straightforward installation.
Key Features
- Mersen Protistor® semiconductor fuse series.
- 10 A rated current.
- 440 V DC rated operating voltage.
- gLB high-speed operating characteristic.
- 14 × 51 mm cylindrical fuse size.
- Built-in striker indication system.
- Silver-plated copper contacts.
- Durable ceramic fuse body.
- Clip mounting for compatible cylindrical fuse holders.
- RoHS compliant.
High-Speed Protection for Power Semiconductor Equipment
Power semiconductor devices can be damaged by excessive fault energy before conventional circuit protection has time to operate. The Mersen G075722 is engineered to respond rapidly, helping reduce the electrical and thermal stress imposed on sensitive components such as diodes, thyristors, rectifiers and transistor-based power modules.
Its full-range gLB characteristic also enables the fuse to provide protection against overloads as well as short circuits. This makes it a dependable protective component for industrial power conversion equipment where operational continuity, selective coordination and semiconductor safety are important.
Typical Applications
- Industrial rectifiers.
- Power inverters and converters.
- Uninterruptible power supply systems.
- Railway traction auxiliary circuits.
- Reduced-voltage motor starters.
- Industrial automation power supplies.
- Protection of diodes, thyristors and semiconductor modules.
