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MERSEN FUSE 6,921 CP AR 14.51 0032 FR14AR69V32T
The High-Speed Cylindrical Fuse Protistor® FR14AR69V32T offers reliable short-circuit protection for critical power electronics, providing rapid fault interruption at 690VAC with a 32A rating. Its 14×51 mm compact footprint and integrated striker enable precise operation and remote signalling in demanding industrial applications.
£13.81
Why Choose the Mersen FR14AR69V32T High-Speed Semiconductor Fuse?
The Mersen FR14AR69V32T is a premium Protistor® high-speed cylindrical semiconductor fuse engineered to provide fast, reliable short-circuit protection for sensitive power semiconductor devices. Part of the Mersen Protistor® 14 × 51 mm aR series, this fuse features an integrated striker indicator for rapid fault indication and simplified maintenance. Rated at 32 A and 690 V AC (IEC) / 700 V AC (UL), it is ideal for protecting IGBTs, thyristors, diodes and other semiconductor devices in demanding industrial applications.
Designed in accordance with IEC 60269-4, the FR14AR69V32T delivers exceptional current-limiting performance with a high breaking capacity to minimise damage during fault conditions. Its compact cylindrical design enables easy installation into compatible fuse holders used throughout industrial power conversion equipment.
The integrated striker provides clear indication when the fuse has operated and can be connected to compatible monitoring systems, helping maintenance engineers quickly identify fault conditions and reduce equipment downtime.
Key Advantages
- High-speed aR semiconductor protection fuse.
- 32 A current rating.
- 690 V AC IEC / 700 V AC UL rated.
- Integrated striker for fuse operation indication.
- Excellent current-limiting performance.
- Compact 14 × 51 mm cylindrical construction.
Key Features
- Mersen Protistor® 14 × 51 mm aR series.
- 32 A rated current.
- 690 V AC IEC / 700 V AC UL rated voltage.
- aR utilisation category for semiconductor protection.
- Integrated striker (trip indicator).
- 160 kA AC breaking capacity.
- RoHS compliant.
- Designed for industrial power electronics.
Designed for High-Speed Semiconductor Protection
The FR14AR69V32T rapidly interrupts fault currents before they can damage expensive semiconductor devices. Its low let-through energy and high interrupting capacity improve equipment reliability while helping to reduce maintenance costs and unplanned production downtime.
The integrated striker simplifies maintenance by providing immediate indication of fuse operation and can be connected to auxiliary monitoring equipment for remote status indication.
Typical Applications
- Variable frequency drives (VFDs).
- Industrial inverters.
- Power converters.
- Servo drives.
- UPS systems.
- Industrial automation equipment.
- Rectifiers and motor control equipment.
Technical Specifications
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| Fuse Indication | Striker | |
|---|---|---|
| Fuse Type | Semiconductor | |
| Fuse Size | 14x51 mm | |
| Fuse Class | aR | |
| Voltage | 690 V | |
| Item number | X1056663 | |
| Catalogue No | FR14AR69V32T | |
| Description | High-Speed Cylindrical Fuse Protistor® Size 14x51 aR 690VAC IEC 32A With Striker | |
| EAN/UPC Code | 3605340592764 | |
| Rated voltage AC IEC | 690 V | |
| Ampere Rating | 32 A | |
| RoHS Compliant | Yes | |
| AC or DC | AC | |
| Speed/Characteristic | aR | |
| Fuse Size | 14x51 | |
| Mounting | Clip | |
| Clearing I2t At Rated Voltage | 500 A²s | |
| Melting I2t | 77.4 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 | 73 mm | |
| Sell Pack Length | 107 mm | |
| Sell Pack Height | 15 mm | |
| Product group | Semiconductor Protection Fuses | |
| Body/Insulating Material | Ceramic | |
| Product Weight | 0.02 kg | |
| Power Dissipation at Rated Current Value | 7.7 W | |
| HS Code | 85361050 | |
| Country of Manufacture | Tunisia |
Frequently Asked Questions
What is the Mersen FR14AR69V32T used for?
It provides high-speed short-circuit protection for semiconductor devices used in industrial drives, converters, UPS systems and other power electronic equipment.
What are the voltage and current ratings?
The fuse is rated at 32 A with a 690 V AC (IEC) and 700 V AC (UL) voltage rating.
What does the aR classification mean?
The aR utilisation category provides short-circuit protection for semiconductor devices and should be used alongside suitable overload protection.
Does this fuse include a striker indicator?
Yes. The FR14AR69V32T includes an integrated striker (trip indicator) for local or remote fuse status indication.
Where is this fuse commonly installed?
It is typically installed in compatible cylindrical fuse holders within industrial drives, power converters, UPS systems and automation equipment.
Trusted Protection for Industrial Power Electronics
Mersen Protistor® semiconductor fuses are trusted worldwide by OEMs, machine builders and maintenance engineers for delivering dependable protection of critical industrial power electronic equipment.
