Why Choose the Mersen J081842 High-Speed DC Fuse?
The Mersen J081842 is a Protistor® high-speed semiconductor protection fuse designed to provide rapid and reliable protection for DC power systems operating up to 1500 V DC. Engineered specifically for safeguarding sensitive power electronic devices, this fuse delivers exceptional current-limiting performance to minimise damage caused by short circuits and fault currents.
As part of the trusted Mersen Protistor® 20 x 127 mm gRB series, the J081842 offers dependable full-range semiconductor protection for photovoltaic systems, battery energy storage installations, industrial converters and other high-performance DC applications. Its ceramic body and silver-plated ferrule terminals provide excellent mechanical strength and long-term reliability.
Featuring a 0.8 A current rating, 1500 V DC voltage rating and 30 kA breaking capacity, the Mersen J081842 is ideally suited for protecting low-current semiconductor circuits in demanding industrial and renewable energy environments.
Key Advantages
- Designed specifically for high-speed semiconductor protection.
- 1500 V DC voltage rating for modern DC power systems.
- 0.8 A current rating for precision protection applications.
- gRB full-range protection against overloads and short circuits.
- Excellent current-limiting performance reduces equipment damage.
- Compact 20 x 127 mm cylindrical design.
- Suitable for renewable energy, industrial automation and DC power distribution.
Key Features
- Manufacturer: Mersen.
- Series: Protistor® 20 x 127 gRB.
- Model: J081842.
- Catalogue number: FD20GB150V0,8.
- Current rating: 0.8 A.
- Rated voltage: 1500 V DC.
- 30 kA DC breaking capacity.
- gRB semiconductor protection characteristic.
- Cylindrical ceramic fuse body.
- Silver-plated ferrule terminals.
- Clip mounting.
- RoHS compliant.
Reliable Protection for Sensitive Power Electronics
High-speed semiconductor fuses are designed to interrupt fault currents before expensive power electronic components such as IGBTs, thyristors, diodes and inverters can be damaged. Their exceptionally fast operation helps improve equipment reliability while reducing repair costs and system downtime.
The Mersen Protistor® range is trusted worldwide in renewable energy systems, battery storage, industrial automation and DC power conversion applications where dependable semiconductor protection is essential.
Typical Applications
- Photovoltaic (PV) systems.
- Battery energy storage systems.
- Industrial DC distribution.
- Power converters and inverters.
- Semiconductor protection.
- Rectifiers and DC drives.
- Automation control equipment.
- Renewable energy installations.
