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MERSEN FUSE DIII-S.EINSATZ 50A 500V GR DIIIGR50V50
Mersen Q217640 DIII Diazed gR fuse-link with 50 A rating, 500 V AC operation and high-speed semiconductor protection.
Why Choose the Mersen Q217640 DIII gR Fuse-link?
The Mersen Q217640 is a premium quality DIII Diazed gR fuse-link designed to provide ultra-fast protection for semiconductor devices and sensitive power electronics. Manufactured by Mersen, one of the world's leading specialists in electrical protection, this fuse delivers exceptional fault current limitation while helping safeguard valuable equipment from damaging short circuits.
Designed for demanding industrial applications, the Q217640 features a 50 A current rating, 500 V AC operating voltage and a DIII bottle fuse format with E33 thread. Its gR operating class provides fast-acting protection specifically suited to semiconductor devices such as rectifiers, thyristors, inverters and variable speed drives.
Constructed with a durable ceramic body and offering a 50 kA breaking capacity, this fuse provides dependable protection in industrial control panels, power conversion equipment and electrical distribution systems where rapid fault interruption is essential.
Key Advantages
- Ultra-fast gR semiconductor protection fuse-link.
- 50 A current rating for industrial power applications.
- 500 V AC rated voltage.
- High 50 kA breaking capacity for dependable fault protection.
- Designed specifically to protect sensitive semiconductor devices.
- Robust ceramic construction for reliable long-term performance.
Key Features
- Manufacturer: Mersen.
- Model: Q217640.
- DIII Diazed bottle fuse.
- gR ultra-fast operating characteristic.
- 50 A rated current.
- 500 V AC rated voltage.
- E33 thread size.
- 50 kA breaking capacity.
- Ceramic fuse body.
- Suitable for semiconductor and power electronic protection.
Designed for Semiconductor Protection
Unlike standard gG fuse-links, gR fuses are specifically engineered to provide extremely fast fault clearance for semiconductor devices. Their rapid operating characteristics help minimise energy let-through, reducing the risk of costly damage to power electronic equipment.
The Mersen Q217640 is ideal for protecting variable speed drives, rectifiers, converters, UPS systems, soft starters and other semiconductor-based industrial equipment where high-speed fault protection is required.
Typical Applications
- Variable speed drives (VSDs).
- Industrial inverters and converters.
- Semiconductor protection.
- UPS systems.
- Motor control equipment.
- Industrial switchgear and control panels.
Technical Specifications
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| Current | 50 A | |
|---|---|---|
| Voltage | 500 V | |
| Device Type | Fuse link | |
| Fuse Type | D / D0 (Neozed/Diazed), Semiconductor | |
| Fuse Size | DIII | |
| Fuse Class | gR | |
| Manufacturer | Mersen | |
| Model | Q217640 | |
| Product type | Diazed bottle fuse-link | |
| Fuse size | DIII | |
| Thread size | E33 | |
| Operating class | gR | |
| Rated current | 50 A | |
| Rated voltage | 500 V AC | |
| Breaking capacity | 50 kA | |
| Body material | Ceramic | |
| Minimum operating temperature | -40°C | |
| Standards | VDE 0636, DIN 49360 / 49515 |
Frequently Asked Questions
What is the Mersen Q217640 used for?
The Q217640 provides ultra-fast protection for semiconductor devices and power electronic equipment against short-circuit faults.
What is the current rating?
This fuse has a 50 A rated current.
What voltage is the fuse rated for?
The Q217640 is rated for operation up to 500 V AC.
What does the gR classification mean?
gR indicates a full-range ultra-fast fuse designed specifically for semiconductor protection, providing rapid interruption of fault currents.
Where is this fuse typically installed?
It is commonly installed in industrial drives, converters, power supplies, UPS systems and other semiconductor-based electrical equipment.
Trusted for High-Speed Circuit Protection
Mersen semiconductor protection fuses are trusted worldwide by panel builders, OEMs and industrial maintenance engineers to safeguard valuable power electronic equipment in demanding industrial environments.
