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MERSEN FUSE CC6,621 CP GRB 27.60 50 R076306
Mersen R076306 FD27GB66V50T Protistor high-speed cylindrical semiconductor fuse rated at 50 A and 660 V DC with integrated striker for semiconductor protection.
£73.94
Why Choose the Mersen R076306 Protistor High-Speed Fuse?
The Mersen R076306, catalogue number FD27GB66V50T, is a high-speed cylindrical semiconductor fuse designed to protect sensitive DC power electronic equipment against overloads and short-circuit faults. Part of the Mersen Protistor® 27 × 60 mm gR (gRB) series, it delivers dependable protection for railway power systems, industrial converters and auxiliary DC circuits.
Developed specifically for modern DC applications, this fuse offers low let-through energy, reduced power losses and excellent performance at elevated operating temperatures. These characteristics help minimise damage to semiconductor devices while improving system reliability and extending equipment life.
With a rated current of 50 A, a 660 V DC IEC rating and a 50 kA breaking capacity, the R076306 is ideal for protecting converters, rectifiers, inverters and railway auxiliary power equipment. Its integrated striker provides convenient fuse status indication for compatible monitoring systems.
Key Advantages
- High-speed gR semiconductor fuse for full-range DC protection.
- 50 A rated current for industrial power electronic applications.
- 660 V DC IEC voltage rating.
- Low I²t performance helps minimise semiconductor damage.
- 50 kA DC breaking capacity.
- Integrated striker indicator for fuse monitoring.
- Low power dissipation improves operating efficiency.
- Designed for demanding railway and industrial DC environments.
Key Features
- Mersen Protistor® high-speed fuse series.
- Manufacturer item number R076306.
- Catalogue number FD27GB66V50T.
- 50 A rated current.
- 660 V DC IEC rated voltage.
- gR utilisation characteristic.
- gRB design for semiconductor protection.
- Integrated striker indication.
- 27 × 60 mm cylindrical fuse.
- Silver-plated copper ferrule terminals.
- Clip mounting installation.
- RoHS compliant.
Reliable Protection for High-Performance DC Systems
Semiconductor fuses are designed to interrupt fault currents extremely quickly, limiting the amount of energy that reaches sensitive electronic components. The Mersen R076306 helps protect IGBTs, diodes, thyristors and other semiconductor devices from catastrophic damage caused by overloads and short circuits.
Its compact cylindrical design, integrated striker and proven Protistor® technology make it an excellent choice for railway applications, industrial converters and DC power distribution systems requiring dependable high-speed protection.
Typical Applications
- Railway traction and auxiliary circuits.
- Industrial DC converters.
- Power semiconductor protection.
- Rectifiers and inverters.
- Battery energy storage systems.
- Industrial automation equipment.
- Renewable energy power conversion.
- DC control and distribution systems.
Technical Specifications
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| Fuse Indication | Striker | |
|---|---|---|
| Device Type | Fuse link | |
| Fuse Type | Cylindrical, Semiconductor | |
| Fuse Size | 27x60 mm | |
| Fuse Class | gR | |
| Current | 50 A | |
| Voltage | 660 V | |
| Manufacturer | Mersen | |
| Series | Protistor® Size 27 × 60 gR (gRB) | |
| Model | R076306 | |
| Catalogue number | FD27GB66V50T | |
| Product type | High-speed cylindrical semiconductor fuse | |
| Rated current | 50 A | |
| Rated voltage | 660 V DC IEC | |
| Current type | DC | |
| Fuse characteristic | gR | |
| Design | gRB | |
| Breaking capacity | 50 kA | |
| Fuse size | 27 × 60 mm | |
| Diameter | 27 mm | |
| Length | 60 mm | |
| Power dissipation | 8.3 W | |
| Terminal type | Ferrule | |
| Terminal material | Silver-plated copper | |
| Body material | Ceramic | |
| Mounting method | Clip mounting | |
| Indication | Integrated striker | |
| EAN | 3605340016451 | |
| RoHS compliant | Yes | |
| HS Code | 85361050 | |
| Country of Manufacture | France |
Frequently Asked Questions
What is the Mersen R076306 used for?
The Mersen R076306 provides high-speed protection for semiconductor devices and DC power electronic equipment against overload and short-circuit faults.
What is the current rating of the R076306?
The fuse has a rated current of 50 A.
What voltage is this fuse rated for?
The R076306 is designed for applications up to 660 V DC.
What is the breaking capacity?
The fuse has a maximum DC breaking capacity of 50 kA.
What is the purpose of the integrated striker?
The striker provides mechanical indication when the fuse operates and can be connected to compatible signalling or monitoring accessories.
Trusted by Railway and Power Electronics Engineers
Mersen Protistor® semiconductor fuses are trusted worldwide for protecting critical semiconductor equipment used in railway systems, industrial automation and power conversion applications.
