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MERSEN FUSE 6,921 CP URGD 27.60 63 6,921CPURGD27.60/63
27×60 mm high-speed cylindrical fuse featuring 63A aR breaking capacity, integrated striker for remote indication, compliant with IEC standards, suitable for industrial semiconductor protection.
£45.41
Why Choose the Mersen A076820 Protistor® High-Speed Fuse?
The Mersen A076820, catalogue number FR27UD69V63T, is a Protistor® high-speed cylindrical semiconductor fuse designed to provide exceptionally fast protection for sensitive power semiconductor devices. Manufactured in a compact 27 × 60 mm cylindrical format, this aR-class fuse is specifically engineered for protecting diodes, thyristors, IGBTs and other semiconductor components against damaging short-circuit currents.
Rated at 63 A with a 690 V AC IEC voltage rating, the fuse delivers an extremely high breaking capacity of 200 kA. An integrated striker indicator enables rapid identification of a blown fuse and supports remote indication systems for improved maintenance efficiency and reduced equipment downtime.
Complying with IEC 60269-1 and IEC 60269-4, the Mersen Protistor® series is trusted worldwide for protecting power electronic equipment used in industrial drives, renewable energy systems, UPS installations and converter technology where rapid fault interruption is essential.
Key Advantages
- Specially designed for semiconductor protection.
- 63 A current rating.
- 690 V AC IEC voltage rating.
- 200 kA breaking capacity for outstanding fault protection.
- Ultra-fast aR operating characteristic.
- Integrated striker indicator for blown fuse indication.
- Compact 27 × 60 mm cylindrical design.
- Suitable for demanding industrial power electronics.
Key Features
- Mersen part number A076820.
- Catalogue designation FR27UD69V63T.
- Protistor® semiconductor protection fuse.
- High-speed aR characteristic.
- 63 A current rating.
- 690 V AC IEC rating.
- 27 × 60 mm cylindrical body.
- Integrated striker indication.
- Ceramic body construction.
- Silver-plated copper ferrule terminals.
- Clip-mounted installation.
- RoHS compliant.
Fast Protection for Power Electronics
Semiconductor devices require protection that operates significantly faster than conventional industrial fuses. The Mersen A076820 is engineered with an aR characteristic to interrupt high fault currents before excessive thermal energy can damage expensive semiconductor components, helping maximise equipment reliability and minimise downtime.
Its compact cylindrical design, high interrupting capacity and integrated striker make it an excellent choice for modern power conversion equipment where rapid fault detection and dependable protection are essential.
Typical Applications
- Variable frequency drives (VFDs).
- Power converters.
- Industrial inverters.
- UPS systems.
- Soft starters.
- Renewable energy converters.
- Semiconductor power supplies.
- Industrial motor control equipment.
Technical Specifications
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| Fuse Indication | Striker | |
|---|---|---|
| Fuse Type | Semiconductor | |
| Fuse Size | 27x60 mm | |
| Fuse Class | aR | |
| Voltage | 690 V | |
| Item number | A076820 | |
| Catalogue No | FR27UD69V63T | |
| Description | High-Speed Cylindrical Fuse Protistor® Size 27x60 aR 690VAC IEC 63A With Striker | |
| EAN/UPC Code | 3605340019957 | |
| Rated voltage AC IEC | 690 V | |
| Ampere Rating | 63 A | |
| RoHS Compliant | Yes | |
| AC or DC | AC | |
| Speed/Characteristic | aR | |
| Fuse Size | 27x60 | |
| Mounting | Clip | |
| Clearing I2t At Rated Voltage | 1.84 kA²s | |
| Melting I2t | 0.405 kA²s | |
| AC Max I.R./Breaking Capacity | I1: 200 kA | |
| Design Details | URGD | |
| Indication System | Yes | |
| Indication System Type | Striker | |
| Connection/Terminal Material | Silver-Plated Copper | |
| Connection/Terminal Type | Ferrule | |
| Product Diameter | 27 mm | |
| Product Length | 60.3 mm | |
| Sell Pack Quantity | 10 EA | |
| Sell Pack Weight | 0.8 kg | |
| Sell Pack Width | 123 mm | |
| Sell Pack Length | 138 mm | |
| Sell Pack Height | 30 mm | |
| Product group | Semiconductor Protection Fuses | |
| Body/Insulating Material | Ceramic | |
| Product Weight | 0.08 kg | |
| Power Dissipation at Rated Current Value | 22 W | |
| HS Code | 85361050 | |
| Country of Manufacture | France |
Frequently Asked Questions
What is the Mersen A076820?
The Mersen A076820 (FR27UD69V63T) is a Protistor® high-speed cylindrical semiconductor fuse designed to protect sensitive power semiconductor devices.
What is the current rating of the A076820?
The fuse has a rated current of 63 A.
What voltage is the A076820 designed for?
It is rated for operation on systems up to 690 V AC IEC.
What does the aR fuse classification mean?
An aR fuse provides partial-range, ultra-fast short-circuit protection specifically for semiconductor devices such as IGBTs, thyristors and diodes.
Does the fuse include a blown fuse indicator?
Yes. The A076820 incorporates an integrated striker indicator for rapid fault indication and compatibility with remote signalling systems.
Where is the Mersen A076820 typically used?
It is commonly installed in industrial drives, converters, UPS systems, renewable energy equipment and other power electronic applications requiring fast semiconductor protection.
Trusted by Power Electronics Professionals Worldwide
Mersen Protistor® semiconductor fuses are trusted by OEMs, panel builders and electrical engineers for delivering ultra-fast fault protection, exceptional interrupting performance and dependable protection of valuable semiconductor equipment.
