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MERSEN FUSE 821 CP GRB 27.60 50 821CPGRB27.6050
High-speed cylindrical fuse ensuring reliable circuit protection for demanding industrial and power electronics applications with integrated striker indication.
£52.10
Why Choose the Mersen FR27GB80V50T Protistor® High-Speed Fuse?
The Mersen A221444 (FR27GB80V50T) is a high-performance Protistor® high-speed cylindrical semiconductor fuse with striker, designed to provide complete protection for sensitive power semiconductor devices in demanding industrial applications. Featuring a gR operating characteristic, this fuse delivers both overload and short-circuit protection, making it ideal for safeguarding IGBTs, thyristors, diodes and other semiconductor components used in modern power conversion equipment.
As part of Mersen's trusted Protistor® 27 × 60 mm gR (gRB) 800 VAC range, the FR27GB80V50T combines a compact cylindrical design with a high interrupting capacity and low let-through energy. The integrated mechanical striker provides reliable fuse operation indication, allowing compatible fuse holders and monitoring systems to quickly identify blown fuses and reduce maintenance time.
With a 50 A current rating, 800 V AC IEC voltage rating and full-range gR semiconductor protection, the A221444 is well suited to variable frequency drives, UPS systems, industrial converters, motor drives and renewable energy equipment.
Key Advantages
- High-speed gR fuse for full-range semiconductor protection.
- 50 A rated current for industrial power electronics.
- 800 V AC IEC voltage rating.
- Integrated mechanical striker for fuse status indication.
- Low I²t reduces stress on sensitive semiconductor devices.
- Compact 27 × 60 mm cylindrical design for standard fuse holders.
Key Features
- Mersen Protistor® semiconductor protection fuse.
- Catalogue number: FR27GB80V50T.
- Item number: A221444.
- 50 A rated current.
- 800 V AC IEC rated voltage.
- gR (gRB) utilisation category for full-range semiconductor protection.
- Integrated mechanical striker indicator.
- 27 × 60 mm cylindrical fuse.
- High interrupting capacity of 90 kA.
- RoHS compliant.
Reliable Protection for Power Electronics
The Mersen FR27GB80V50T is engineered to rapidly interrupt overload and fault currents before damaging energy reaches sensitive semiconductor devices. Its full-range gR operating characteristic protects both overload and short-circuit conditions, helping maximise equipment reliability while reducing maintenance and replacement costs.
Protistor® semiconductor fuses are widely used in industrial automation, renewable energy systems, UPS equipment, motor drives and power conversion systems where dependable semiconductor protection is essential.
Typical Applications
- Variable frequency drives.
- Industrial motor drives.
- Power converters and inverters.
- UPS systems.
- Renewable energy equipment.
- Industrial automation and control panels.
- Power semiconductor protection.
Technical Specifications
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| Fuse Indication | Striker | |
|---|---|---|
| Fuse Type | Semiconductor | |
| Fuse Size | 26x60 mm | |
| Fuse Class | gR | |
| Voltage | 800 V | |
| Item number | A221444 | |
| Catalogue No | FR27GB80V50T | |
| Description | High-Speed Cylindrical Fuse Protistor® Size 27x60 gR 800VAC IEC 50A With Striker | |
| EAN/UPC Code | 3605340253788 | |
| Rated voltage AC IEC | 800 V | |
| Ampere Rating | 50 A | |
| RoHS Compliant | Yes | |
| AC or DC | AC | |
| Speed/Characteristic | gR | |
| Fuse Size | 26x60 | |
| Mounting | Clip | |
| Clearing I2t At Rated Voltage | 2700 A²s | |
| AC Max I.R./Breaking Capacity | I1: 90 kA | |
| Design Details | gRB | |
| 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 | 8.5 W | |
| HS Code | 85361050 | |
| Country of Manufacture | France |
Frequently Asked Questions
What is the Mersen A221444 used for?
The A221444 (FR27GB80V50T) provides full-range protection for power semiconductor devices used in industrial drives, converters, UPS systems and other power electronic equipment.
What is the current rating of this fuse?
This fuse has a 50 A rated current.
What voltage is the FR27GB80V50T rated for?
The fuse is rated for 800 V AC according to IEC standards.
What does the gR characteristic mean?
The gR operating characteristic provides full-range protection against both overloads and short circuits for sensitive power semiconductor devices.
What is the purpose of the striker?
The integrated mechanical striker operates when the fuse clears a fault, allowing compatible fuse holders or monitoring accessories to provide visual or electrical indication of fuse operation.
Trusted for Semiconductor Protection Worldwide
Mersen Protistor® semiconductor fuses are trusted by OEMs, automation engineers and panel builders worldwide to provide reliable protection for critical industrial power electronic equipment.
