Why Choose the Mersen FR22GR69V25 Protistor® High-Speed Fuse?
The Mersen FR22GR69V25 is a compact and highly responsive Protistor® high-speed semiconductor fuse designed to protect sensitive power electronic components in demanding industrial systems. Its gR utilisation category provides full-range protection against both overload and short-circuit currents, helping safeguard semiconductor devices such as IGBTs, thyristors, diodes and rectifiers.
Manufactured by Mersen, the FR22GR69V25 delivers rapid fault interruption and current-limiting performance to reduce the thermal and electrical stress placed on valuable semiconductor components. It is particularly suitable for variable frequency drives, UPS systems, industrial inverters, rectifiers and other power conversion equipment where fast and dependable circuit protection is essential.
With a rated current of 25 A, a 690 V AC IEC / 700 V AC UL voltage rating and a compact 22 × 58 mm cylindrical body, the FR22GR69V25 supports straightforward installation in compatible fuse holders within industrial control panels and electrical assemblies.
Key Advantages
- High-speed gR semiconductor protection fuse.
- 25 A rated current for industrial power electronic circuits.
- 690 V AC IEC / 700 V AC UL voltage rating.
- Full-range protection against overloads and short circuits.
- Current-limiting operation helps reduce damaging fault energy.
- Compact 22 × 58 mm cylindrical design.
Key Features
- Mersen Protistor® high-speed fuse range.
- 25 A rated current.
- 690 V AC IEC / 700 V AC UL rated voltage.
- gR utilisation category for full-range semiconductor protection.
- 22 × 58 mm cylindrical fuse format.
- Fast fault-clearing characteristics.
- Low let-through energy for enhanced component protection.
- Suitable for compatible cylindrical fuse holders.
Full-Range Protection for Power Semiconductors
Power semiconductor devices can be damaged within a very short period when exposed to excessive current. The Mersen FR22GR69V25 is engineered to interrupt fault currents rapidly, limiting the electrical energy passed through the circuit and helping prevent costly damage to connected semiconductor components.
Unlike partial-range semiconductor fuses, the gR classification provides protection against both overload and short-circuit conditions. This makes the FR22GR69V25 a versatile protection solution for industrial power electronic systems requiring comprehensive semiconductor protection.
Typical Applications
- Variable frequency drives and motor-control equipment.
- Industrial inverters and power converters.
- Rectifier and diode assemblies.
- Uninterruptible power supply systems.
- Industrial automation and machinery panels.
- Protection of IGBTs, thyristors and other power semiconductors.
