Why Choose the Mersen Z099244 High-Speed Cylindrical Fuse?
The Mersen Z099244 is a high-performance Protistor® cylindrical semiconductor fuse-link developed specifically for fast and dependable protection in high-voltage DC circuits. Rated at 4 A and 1500 V DC, it provides full-range protection for auxiliary circuits, control equipment, measuring devices and monitoring systems.
Part of the Mersen 20 × 127 mm gR fuse range, the Z099244 features a gRB design classification and rapid current-limiting performance. Its fast operating characteristic helps reduce the thermal and electrical energy passed through to sensitive semiconductor components during overload and short-circuit conditions.
The fuse combines a durable ceramic body with silver-plated copper ferrule terminals and a maximum DC breaking capacity of 30 kA. Its compact cylindrical format and clip-mounted installation make it suitable for industrial automation, power conversion, renewable energy and high-voltage DC control applications.
Key Advantages
- Fast-acting gR full-range semiconductor protection.
- 4 A rated current for sensitive auxiliary and control circuits.
- 1500 V DC voltage rating for high-voltage DC installations.
- 30 kA DC breaking capacity for dependable fault interruption.
- Low let-through energy helps protect sensitive semiconductor devices.
- Excellent current-limiting performance during electrical faults.
- Compact 20 × 127 mm cylindrical format.
- Robust ceramic construction for demanding industrial environments.
Key Features
- Mersen Protistor® high-speed cylindrical fuse-link.
- FD20GB150V4 catalogue reference.
- 4 A rated current.
- 1500 V DC rated operating voltage.
- gR speed and protection characteristic.
- gRB design classification.
- 30 kA maximum DC breaking capacity.
- Silver-plated copper ferrule terminals.
- 20 × 127 mm cylindrical fuse size.
- Clip-mounted installation.
- Ceramic insulating body.
- RoHS-compliant construction.
Reliable Protection for Sensitive DC Circuits
High-speed gR fuse-links are designed to interrupt overload and short-circuit currents before damaging thermal and electrical stresses can reach semiconductor devices and associated control equipment. Their rapid operation helps improve system reliability while reducing the risk of expensive component failure and extended downtime.
The Mersen Z099244 is specially developed for DC applications and is suitable for protecting auxiliary circuits, control equipment, measuring instruments and monitoring devices. Its standard 20 × 127 mm format enables straightforward installation in compatible fuse clips and holders.
Typical Applications
- Industrial auxiliary circuits.
- Control and monitoring equipment.
- Measuring devices and instrumentation.
- Semiconductor protection circuits.
- Industrial power converters.
- Photovoltaic power systems.
- Battery energy storage equipment.
- High-voltage DC distribution systems.
