The FR14AR69V10 Protistor® fuse provides rapid response to overloads and short circuits in circuits rated up to 690VAC. It features a 14x51mm cylindrical design with a breaking capacity of 160 kA and a 10A rating, ideal for semiconductor protection.
£13.00
The Mersen FR14AR69V10 is a high-performance 10 A cylindrical semiconductor fuse designed to provide ultra-fast short-circuit protection for sensitive power electronic equipment. As part of the trusted Mersen Protistor® 14 × 51 mm aR fuse series, it is engineered to protect semiconductor devices in demanding industrial applications while complying with IEC 60269-4.
Featuring an aR operating characteristic, this high-speed fuse provides partial-range protection against damaging short-circuit currents. Its low let-through energy and exceptionally high interrupting capacity help safeguard IGBTs, thyristors, rectifiers, inverters, variable frequency drives and other critical power electronic components from catastrophic electrical faults.
With a rated current of 10 A and an IEC rated voltage of 690 V AC, the FR14AR69V10 is ideal for industrial automation, motor control and power conversion systems where fast semiconductor protection is essential. This version is supplied without a striker indicator.
The Mersen FR14AR69V10 rapidly interrupts high fault currents before they can damage sensitive semiconductor devices. Its extremely fast operation helps minimise thermal stress and prolong the service life of expensive electronic components used in industrial power conversion systems.
Its aR operating characteristic is specifically intended for semiconductor short-circuit protection and should be used together with suitable overload protection where required. This makes the FR14AR69V10 an excellent choice for industrial drives, UPS systems, converters and similar equipment.
| Item number | K1027327 |
|---|---|
| Catalogue No | FR14AR69V10 |
| Description | High-Speed Cylindrical Fuse Protistor® Size 14x51 aR 690VAC IEC 10A |
| EAN/UPC Code | 3605340531411 |
| Rated voltage AC IEC | 690 V |
| Ampere Rating | 10 A |
| RoHS Compliant | Yes |
| AC or DC | AC |
| Speed/Characteristic | aR |
| Fuse Size | 14x51 |
| Mounting | Clip |
| Clearing I2t At Rated Voltage | 40 A²s |
| Melting I2t | 4.3 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 | 107 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 | 3 W |
| HS Code | 85361010 |
| Country of Manufacture | Tunisia |
The FR14AR69V10 provides high-speed short-circuit protection for semiconductor devices used in industrial drives, converters, rectifiers and other power electronic equipment.
The Mersen FR14AR69V10 has a rated current of 10 A.
The aR operating class provides partial-range semiconductor protection against short-circuit currents and is intended for use alongside suitable overload protection.
No. The FR14AR69V10 is supplied without a striker indicator. A striker-equipped version (FR14AR69V10T) is available where indication is required.
The fuse is designed for compatible 14 × 51 mm cylindrical fuse holders suitable for its voltage and current ratings.
Mersen Protistor® semiconductor fuses are trusted worldwide by electrical engineers, OEM manufacturers and panel builders for dependable protection of critical industrial power electronic systems.
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2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...