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MERSEN FUSE DIII-S.EINSATZ 35A 500V GR DIIIGR50V35
Mersen K217129 DIII gR high speed Diazed fuse link rated at 35 A and 500 V AC for semiconductor and power electronic protection.
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.
Technical Specifications
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| Current | 35 A | |
|---|---|---|
| Voltage | 500 V | |
| Device Type | Fuse link | |
| Fuse Type | D / D0 (Neozed/Diazed), Semiconductor | |
| Fuse Size | DIII | |
| Fuse Class | gR | |
| Manufacturer | Mersen | |
| Manufacturer part number | K217129 | |
| Product type | High speed Diazed fuse link | |
| Fuse size | DIII | |
| Thread size | E33 | |
| Rated current | 35 A | |
| Rated voltage AC | 500 V | |
| Utilisation category | gR | |
| Breaking capacity | 50 kA | |
| Body material | Ceramic | |
| Minimum operating temperature | -40°C | |
| Standards | VDE 0636, DIN 49360 / DIN 49515 | |
| Mounting type | Diazed fuse holder |
Frequently Asked Questions
What is the Mersen K217129 used for?
The Mersen K217129 is designed to protect semiconductor devices and power electronic equipment against short circuits and high fault currents.
What is the current rating of this fuse?
This high speed fuse has a 35 A current rating.
What fuse size is the K217129?
The K217129 is manufactured in the standard DIII Diazed format with an E33 thread size.
What does the gR characteristic mean?
The gR utilisation category provides full-range high speed protection specifically for semiconductor devices and other sensitive power electronic equipment.
What equipment is this fuse commonly used in?
It is commonly installed in drives, converters, UPS systems, rectifiers and industrial automation equipment containing power semiconductors.
Trusted by Industrial Engineers Worldwide
Mersen high speed semiconductor fuses are trusted worldwide by OEMs, panel builders and automation engineers for dependable protection of critical power electronic equipment.
