Standard delivery
£8 ex VAT · free over £200UK parcel delivery is £8 ex VAT, or free on orders over £200 ex VAT.
Heavier items may be charged at a weight-based or pallet rate, shown at checkout.
MERSEN FUSE 821 CP GRB 27.60 20 FR27GB80V20T
High-speed cylindrical fuse with integrated striker for reliable circuit protection at 800VAC and 20A, suitable for semiconductor protection and industrial applications.
£42.55
Why Choose the Mersen FR27GB80V20T High-Speed Semiconductor Fuse?
The Mersen FR27GB80V20T is a premium Protistor® high-speed cylindrical semiconductor fuse engineered to provide full-range protection for power semiconductor devices used in industrial power conversion equipment. Part of the Mersen Protistor® 27 × 60 mm gR (gRB) series, this fuse incorporates an integrated trip indicator (striker) for rapid fault indication and simplified maintenance. It is rated at 20 A and 800 V AC (IEC), making it ideal for demanding industrial applications.
Designed to protect IGBTs, SCRs, diodes and other sensitive semiconductor devices, the FR27GB80V20T offers exceptional current-limiting performance and a high interrupting capacity. Its solidified sand construction and precision die-cut fuse elements help minimise let-through energy, improving equipment protection and system reliability.
The compact 27 × 60 mm cylindrical body enables installation in compatible fuse holders within drives, converters, UPS systems and industrial automation equipment. The integrated striker allows straightforward connection to monitoring systems for fast identification of operated fuses.
Key Advantages
- High-speed gR semiconductor protection fuse.
- 20 A current rating for industrial power electronics.
- 800 V AC IEC rated for demanding applications.
- Integrated striker for remote fuse indication.
- Excellent current-limiting performance reduces semiconductor damage.
- Compact 27 × 60 mm cylindrical design.
Key Features
- Mersen Protistor® 27 × 60 gR (gRB) series.
- 20 A rated current.
- 800 V AC IEC rated voltage.
- gR utilisation category for full-range semiconductor protection.
- Integrated trip indicator (striker).
- Rated breaking capacity of 90 kA AC.
- Low clearing I²t for enhanced semiconductor protection.
- RoHS compliant.
Reliable Protection for Industrial Power Electronics
The FR27GB80V20T rapidly interrupts fault currents before they can damage expensive semiconductor devices. Its high interrupting capacity and low let-through energy improve equipment reliability while helping minimise maintenance costs and production downtime.
The integrated striker provides clear indication when the fuse has operated and allows connection to compatible monitoring systems, making the fuse well suited to modern industrial automation and power conversion applications.
Typical Applications
- Variable frequency drives (VFDs).
- Industrial inverters.
- Power converters.
- UPS systems.
- Servo drives.
- Industrial automation equipment.
Technical Specifications
Tick the specs you need, then view products that match.
| Fuse Indication | Striker | |
|---|---|---|
| Fuse Type | Semiconductor | |
| Fuse Size | 26x60 mm | |
| Fuse Class | gR | |
| Voltage | 800 V | |
| Item number | W221440 | |
| Catalogue No | FR27GB80V20T | |
| Description | High-Speed Cylindrical Fuse Protistor® Size 27x60 gR 800VAC IEC 20A With Striker | |
| EAN/UPC Code | 3605340253702 | |
| Rated voltage AC IEC | 800 V | |
| Ampere Rating | 20 A | |
| RoHS Compliant | Yes | |
| AC or DC | AC | |
| Speed/Characteristic | gR | |
| Fuse Size | 26x60 | |
| Mounting | Clip | |
| Clearing I2t At Rated Voltage | 350 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 | 4 W | |
| HS Code | 85361050 | |
| Country of Manufacture | France |
Frequently Asked Questions
What is the Mersen FR27GB80V20T used for?
It protects power semiconductor devices used in drives, converters, UPS systems and other industrial power electronic equipment.
What are the voltage and current ratings?
The fuse is rated at 20 A and 800 V AC (IEC).
What does the gR classification mean?
The gR utilisation category provides full-range protection for semiconductor devices, covering both overload and short-circuit conditions.
Does this fuse include a fault indicator?
Yes. The FR27GB80V20T includes an integrated striker (trip indicator) for easy fuse status monitoring.
Where is this fuse commonly installed?
It is typically installed in compatible fuse holders within industrial drives, converters, UPS systems and automation panels.
Trusted for Semiconductor Protection Worldwide
Mersen Protistor® semiconductor fuses are trusted by OEMs, machine builders and maintenance engineers worldwide to deliver dependable protection for critical industrial power electronic equipment.
