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MERSEN FUSE 6,921 CP GR 14.51 0020 FR14GR69V20T
Engineered for demanding industrial applications, the FR14GR69V20T provides reliable circuit protection with rapid response to overloads and short circuits. Its gR performance class ensures full-range protection for semiconductor devices and other sensitive components.
£8.70
Why Choose the Mersen FR14GR69V20T Protistor® Semiconductor Fuse?
The Mersen FR14GR69V20T is a high speed gR semiconductor fuse developed to provide complete protection for sensitive power electronic components. Part of the trusted Mersen Protistor® 14×51 gR series, this fuse is designed to safeguard semiconductors including IGBTs, thyristors, diodes and rectifiers by rapidly clearing overloads and short circuits before damage can occur.
Designed for industrial power applications, the FR14GR69V20T delivers excellent current limiting performance and a high breaking capacity while helping reduce equipment downtime and maintenance costs. The integrated striker indicator provides fast identification of an operated fuse, making maintenance quicker and improving system safety.
With a 20 A current rating, a 690 V AC IEC / 700 V AC UL voltage rating and a compact 14 × 51 mm cylindrical body, the FR14GR69V20T is ideal for industrial drives, UPS systems, inverters, power converters and other semiconductor protection applications.
Key Advantages
- High speed gR semiconductor protection fuse.
- 20 A rated current for industrial power electronics.
- 690 V AC IEC / 700 V AC UL voltage rating.
- Integrated striker indicator for rapid fault identification.
- High interrupting capacity with excellent current limiting characteristics.
- Compact 14 × 51 mm cylindrical design for easy installation.
Key Features
- Mersen Protistor® high speed fuse series.
- 20 A rated current.
- 690 V AC IEC / 700 V AC UL rated voltage.
- gR operating class for full semiconductor protection.
- 14 × 51 mm ceramic cylindrical body.
- Integrated striker for fuse operation indication.
- Low I²t design for improved semiconductor protection.
- IEC 60269-4 and UL 248-13 compliant.
Reliable Protection for Semiconductor Equipment
The Mersen FR14GR69V20T is specifically engineered to protect sensitive semiconductor devices against overload and short circuit conditions. Its low I²t characteristics help minimise thermal stress on power electronic components, improving equipment reliability and extending service life.
Protistor® semiconductor fuses are widely specified for industrial automation, renewable energy systems, UPS equipment and variable speed drives where rapid fault interruption is essential for protecting valuable electronic equipment.
Typical Applications
- Variable frequency drives.
- Industrial inverters.
- UPS systems.
- Power converters.
- Motor drives.
- Renewable energy equipment.
Technical Specifications
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| Fuse Indication | Striker | |
|---|---|---|
| Fuse Type | Semiconductor | |
| Fuse Size | 14x51 mm | |
| Fuse Class | gR | |
| Voltage | 690 V | |
| Item number | L1017185 | |
| Catalogue No | FR14GR69V20T | |
| Description | High-Speed Cylindrical Fuse Protistor® Size 14x51 gR 690VAC IEC 20A With Striker | |
| EAN/UPC Code | 3605340506822 | |
| Rated voltage AC IEC | 690 V | |
| Ampere Rating | 20 A | |
| RoHS Compliant | Yes | |
| AC or DC | AC | |
| Speed/Characteristic | gR | |
| Fuse Size | 14x51 | |
| Mounting | Clip | |
| Clearing I2t At Rated Voltage | 230 A²s | |
| Melting I2t | 26.8 A²s | |
| AC Max I.R./Breaking Capacity | I1: 160 kA | |
| Indication System | Yes | |
| Indication System Type | Striker | |
| Connection/Terminal Material | Silver-Plated Copper | |
| Connection/Terminal Type | Ferrule | |
| Product Diameter | 14.3 mm | |
| Product Length | 51 mm | |
| Sell Pack Quantity | 10 EA | |
| Sell Pack Weight | 0.2 kg | |
| Sell Pack Width | 75 mm | |
| Sell Pack Length | 104 mm | |
| Sell Pack Height | 16 mm | |
| Product group | Semiconductor Protection Fuses | |
| Body/Insulating Material | Ceramic | |
| Product Weight | 0.02 kg | |
| Power Dissipation at Rated Current Value | 4.8 W | |
| HS Code | 85361050 | |
| Country of Manufacture | Tunisia |
Frequently Asked Questions
What is the Mersen FR14GR69V20T used for?
The FR14GR69V20T is designed to protect semiconductor devices including IGBTs, thyristors, rectifiers and diodes used in industrial power electronic equipment.
What is the current rating of this fuse?
This fuse has a 20 A current rating.
What voltage is the FR14GR69V20T rated for?
The fuse is rated for 690 V AC (IEC) and 700 V AC (UL) applications.
What does the integrated striker do?
The built-in striker provides a mechanical indication when the fuse operates, allowing faster maintenance and fault diagnosis.
Where is this fuse commonly installed?
The FR14GR69V20T is commonly installed in industrial drives, UPS systems, inverters, converters and other equipment requiring fast semiconductor protection.
Trusted by Industrial Engineers Worldwide
Mersen Protistor® semiconductor fuses are trusted worldwide for delivering rapid fault interruption, dependable semiconductor protection and reliable performance in demanding industrial power applications.
