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MERSEN FUSE 6,900 CP GR 14.51 0020 FR14GR69V20
The FR14GR69V20 is a high-speed cylindrical fuse designed for semiconductor protection with a 14×51 mm size, rated at 690VAC and 20A, featuring a gR characteristic and full-range breaking capacity.
£6.68
Why Choose the Mersen FR14GR69V20 Protistor® Semiconductor Fuse?
The Mersen FR14GR69V20, item number F1017203, is a high-speed Protistor® cylindrical semiconductor fuse designed to provide full-range protection for sensitive power semiconductor devices. Part of Mersen's 14 × 51 mm gR series, it is engineered for industrial power electronic applications operating at up to 690 V AC (IEC) and 700 V AC (UL).
With a 20 A current rating and gR operating characteristic, the FR14GR69V20 provides dependable protection for IGBTs, thyristors, diodes, rectifiers and other semiconductor devices used in variable speed drives, UPS systems, industrial inverters and power converters. Unlike the "T" variant, this model is supplied without a striker indicator.
Its ceramic cylindrical body, silver-plated copper ferrules and high interrupting capacity minimise let-through energy during fault conditions, helping protect expensive semiconductor components while improving equipment reliability and reducing maintenance costs.
Key Advantages
- High-speed semiconductor protection fuse.
- 20 A rated current.
- 690 V AC IEC / 700 V AC UL rated voltage.
- gR full-range operating characteristic.
- 160 kA AC breaking capacity.
- Protects against overload and short-circuit faults.
- Low let-through energy for improved semiconductor protection.
- Compact 14 × 51 mm cylindrical format.
Key Features
- Mersen Protistor® 14 × 51 mm gR series.
- Catalogue number: FR14GR69V20.
- Item number: F1017203.
- 20 A current rating.
- 690 V AC IEC / 700 V AC UL.
- gR full-range semiconductor protection.
- No striker indicator.
- Ceramic body with silver-plated ferrules.
- Ferrule terminals for clip mounting.
- RoHS compliant.
Reliable Protection for Industrial Power Electronics
The Mersen FR14GR69V20 is designed to interrupt fault currents rapidly, limiting thermal and mechanical stress on semiconductor devices. Its current-limiting characteristics help maximise equipment reliability while extending the service life of critical power electronic components.
The gR operating class provides full-range protection against both overload and short-circuit faults, making the fuse suitable for industrial drives, UPS systems, converters and renewable energy equipment.
Typical Applications
- Variable frequency drives.
- Industrial motor drives.
- UPS systems.
- Industrial inverters.
- Power converters.
- Rectifiers.
- Semiconductor protection circuits.
- Industrial automation equipment.
Technical Specifications
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| Fuse Type | Semiconductor | |
|---|---|---|
| Fuse Size | 14x51 mm | |
| Fuse Class | gR | |
| Voltage | 690 V | |
| Item number | F1017203 | |
| Catalogue No | FR14GR69V20 | |
| Description | High-Speed Cylindrical Fuse Protistor® Size 14x51 gR 690VAC IEC 20A | |
| EAN/UPC Code | 3605340506969 | |
| 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 | |
| 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 FR14GR69V20 used for?
The FR14GR69V20 protects sensitive semiconductor devices such as IGBTs, thyristors, diodes and rectifiers against overload and short-circuit faults.
What current rating does this fuse have?
The fuse has a rated current of 20 A.
What voltage is the FR14GR69V20 rated for?
It is rated for 690 V AC (IEC) and 700 V AC (UL).
Does the FR14GR69V20 include a striker indicator?
No. The FR14GR69V20 is the standard version supplied without a striker indicator. The FR14GR69V20T variant includes a striker.
What does the gR operating characteristic mean?
The gR characteristic provides full-range protection against both overload and short-circuit faults for semiconductor devices.
Trusted Protection for Industrial Power Electronics
Mersen Protistor® semiconductor fuses are trusted worldwide by OEMs, panel builders and industrial engineers for protecting critical semiconductor devices in demanding industrial applications.
