Why Choose the Mersen K217129 DIII gR High Speed Fuse Link?
The Mersen K217129 is a high speed DIII Diazed fuse link specifically designed to protect power semiconductors and sensitive electronic equipment from damaging overcurrents. Featuring a 35 A current rating, 500 V AC operating voltage and a gR utilisation category, it provides exceptionally fast fault interruption to safeguard valuable power electronic components.
Manufactured as part of Mersen's proven high speed Diazed fuse range, the K217129 combines the familiar DIII screw-fuse format with semiconductor-grade protection. Its ceramic construction, high breaking capacity and current limiting performance make it ideal for protecting drives, converters, rectifiers and industrial automation equipment.
Designed for installation in standard DIII (E33) fuse bases, the K217129 provides dependable protection for industrial control panels, electrical switchgear and power conversion equipment where rapid fault clearance is essential for protecting expensive semiconductor devices.
Key Advantages
- High speed gR semiconductor fuse link.
- 35 A rated current for sensitive electronic equipment.
- 500 V AC operating voltage.
- Rapid fault interruption helps minimise semiconductor damage.
- Current limiting design reduces let-through energy.
- Compatible with standard DIII (E33) Diazed fuse systems.
Key Features
- Mersen high speed Diazed fuse series.
- Manufacturer part number: K217129.
- 35 A nominal current rating.
- 500 V AC rated voltage.
- DIII fuse size.
- E33 thread size.
- gR semiconductor protection characteristic.
- 50 kA breaking capacity.
Reliable Protection for Power Electronics
High speed gR fuse links are specifically developed to protect semiconductor devices from destructive short-circuit currents. Their exceptionally fast operation limits thermal and mechanical stress, helping extend the service life of rectifiers, thyristors, IGBTs and other power electronic components.
The Mersen K217129 is ideally suited to industrial automation systems, variable speed drives, UPS equipment, converters and power supplies where dependable semiconductor protection is critical to maintaining system reliability.
Typical Applications
- Variable speed drives.
- Power semiconductor protection.
- Rectifiers and converters.
- Industrial control panels.
- UPS systems.
- Automation equipment.
- Power supplies.
- Electrical switchgear.
