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MERSEN FUSE 821 CP GRB 27.60 40 821CPGRB27.60
High-speed Protistor® fuse offering reliable protection for power semiconductors with gR characteristic, rated 800VAC 40A, featuring integrated striker indication.
£48.22
Why Choose the Mersen Z221443 Protistor® High-Speed Fuse?
The Mersen Z221443, catalogue number FR27GB80V40T, is a Protistor® high-speed cylindrical semiconductor fuse designed to provide full-range protection for sensitive power semiconductor devices operating in demanding industrial power electronic systems. Classified as a gR (gRB) semiconductor fuse, it complies with IEC 60269-1 and IEC 60269-4, delivering rapid fault interruption for both overload and short-circuit conditions.
Manufactured by Mersen, the Z221443 is ideal for protecting IGBTs, thyristors, diodes and rectifiers used in variable frequency drives, UPS systems, industrial inverters and power conversion equipment. Its integrated trip indicator (striker) provides positive indication following fuse operation and can be used with compatible fuse holders for remote signalling.
With a 40 A current rating, an 800 V AC IEC voltage rating and a robust 27 × 60 mm cylindrical body, the FR27GB80V40T offers reliable semiconductor protection while supporting compact equipment design and simplified maintenance.
Key Advantages
- Fast-acting gR (gRB) semiconductor protection fuse.
- 40 A rated current.
- 800 V AC IEC voltage rating.
- Integrated trip indicator (striker).
- Full-range protection against overloads and short circuits.
- High interrupting capacity for demanding industrial applications.
Key Features
- Mersen Protistor® Series.
- Item number: Z221443.
- Catalogue number: FR27GB80V40T.
- gR (gRB) utilisation category.
- 40 A rated current.
- 800 V AC IEC rated voltage.
- 27 × 60 mm cylindrical ceramic fuse.
- Integrated striker for indication and remote signalling.
Reliable Full-Range Semiconductor Protection
The Mersen Z221443 has been engineered to rapidly interrupt excessive fault currents before they can damage expensive semiconductor devices. Its low let-through energy helps minimise electrical and thermal stress, extending equipment life while improving overall system reliability.
As a gR (gRB) class fuse, the FR27GB80V40T provides full-range protection against both overloads and short-circuit faults. The integrated striker allows quick identification of an operated fuse and supports remote monitoring when used with compatible fuse holders.
Typical Applications
- Variable frequency drives (VFDs).
- Industrial motor drives.
- UPS systems.
- Industrial inverters.
- Power converters and rectifiers.
- Protection of IGBTs, thyristors and other semiconductor devices.
Technical Specifications
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| Fuse Indication | Striker | |
|---|---|---|
| Fuse Type | Semiconductor | |
| Fuse Size | 26x60 mm | |
| Fuse Class | gR | |
| Voltage | 800 V | |
| Item number | Z221443 | |
| Catalogue No | FR27GB80V40T | |
| Description | High-Speed Cylindrical Fuse Protistor® Size 27x60 gR 800VAC IEC 40A With Striker | |
| EAN/UPC Code | 3605340253764 | |
| Rated voltage AC IEC | 800 V | |
| Ampere Rating | 40 A | |
| RoHS Compliant | Yes | |
| AC or DC | AC | |
| Speed/Characteristic | gR | |
| Fuse Size | 26x60 | |
| Mounting | Clip | |
| Clearing I2t At Rated Voltage | 1400 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 W | |
| HS Code | 85361050 | |
| Country of Manufacture | France |
Frequently Asked Questions
What is the Mersen Z221443 used for?
It 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?
The Mersen Z221443 has a rated current of 40 A.
What voltage is the Z221443 rated for?
The fuse is rated for 800 V AC (IEC) applications.
What is the purpose of the integrated striker?
The integrated striker provides mechanical indication after fuse operation and can be used with compatible fuse holders for remote signalling.
What does the gR (gRB) classification mean?
The gR (gRB) classification identifies a full-range semiconductor fuse designed to protect power semiconductor devices against both overload and short-circuit faults.
Trusted Protection for Industrial Power Electronics
Mersen Protistor® semiconductor fuses are trusted worldwide by OEMs, panel builders and industrial engineers for dependable protection of critical power electronic systems.
