Why Choose the Mersen Y084776 High-Speed Semiconductor Fuse?
The Mersen Y084776 is a premium Protistor® square body high-speed semiconductor fuse designed to provide fast and reliable protection for power semiconductor devices operating in demanding DC applications. As part of the trusted Mersen Protistor® Size 120 gR 750 VDC series, it delivers rapid fault interruption to minimise damage to sensitive electronic components while maximising system uptime and reliability.
Designed for railway power systems, industrial drives and DC power conversion equipment, the Y084776 features a low I²t design, high breaking capacity and low power dissipation. Its compact square body construction with open slot blade terminals and integrated striker allows simple installation while ensuring dependable operation in demanding industrial environments.
With a rated current of 50 A and a 750 V DC IEC voltage rating, the Mersen Y084776 is ideally suited to protecting IGBTs, thyristors, diodes and other semiconductor devices used in railway, UPS and industrial DC power systems.
Key Advantages
- High-speed semiconductor protection fuse for DC applications.
- 50 A current rating for sensitive power electronics.
- 750 V DC IEC voltage rating.
- Ultra-fast gR characteristic for comprehensive semiconductor protection.
- Integrated striker mechanism for fuse status indication.
- 100 kA DC breaking capacity for dependable fault interruption.
Key Features
- Mersen Protistor® Size 120 gR series.
- 50 A rated current.
- 750 V DC IEC rated voltage.
- 100 kA DC breaking capacity.
- Square body construction with open slot blade terminals.
- Integrated striker for blown fuse indication.
- Very low I²t for enhanced semiconductor protection.
- Suitable for railway, UPS and industrial power conversion equipment.
Reliable Protection for DC Power Electronics
High-speed semiconductor fuses are engineered to protect sensitive power electronic devices from damaging short circuits. Their extremely rapid response limits fault energy, helping reduce equipment damage, minimise downtime and extend the operational life of valuable semiconductor components.
The Mersen Protistor® range is widely used in railway traction equipment, UPS systems, industrial drives and power conversion systems where dependable semiconductor protection is essential.
Typical Applications
- Railway traction and auxiliary systems.
- Industrial DC drives.
- UPS and backup power equipment.
- Power converters and rectifiers.
- Battery energy storage systems.
- Protection of IGBTs, thyristors and semiconductor modules.
