Why Choose the Mersen W097263 6.9URD36T250 Semiconductor Fuse?
The Mersen W097263 6.9URD36T250 is a high-speed British Standard semiconductor fuse-link engineered to protect sensitive power electronic components against damaging short-circuit currents. Its rapid aR operating characteristic makes it suitable for industrial equipment in which conventional general-purpose fuses may not operate quickly enough to protect semiconductor devices.
With a substantial 250 A current rating and a 690 V AC voltage rating, the W097263 is designed for demanding power conversion and motor-control installations. Its high interrupting capacity enables the fuse to safely clear severe fault currents while helping to reduce thermal and electrical stress on connected equipment.
The cylindrical fuse body incorporates bolted terminations for secure installation and an integrated indicator that provides a clear visual indication following operation. These features make the Mersen W097263 a dependable replacement fuse for compatible drives, rectifiers, inverters and industrial power systems.
Key Advantages
- High-speed aR semiconductor protection for rapid fault interruption.
- 250 A current rating for high-power industrial applications.
- 690 V AC rated voltage for demanding electrical systems.
- 200 kA interrupting rating for reliable clearance of severe faults.
- Integrated indicator simplifies inspection and maintenance.
- Bolted connections provide a secure, low-resistance installation.
Key Features
- Mersen high-speed semiconductor fuse-link.
- Model 6.9URD36T250, also listed as 6,9 URR 36 T 250.
- 250 A rated current.
- 690 V AC rated voltage.
- Class aR operating characteristic.
- 200 kA interrupting capacity.
- Bolted terminal arrangement.
- Built-in fuse operation indicator.
- Compact cylindrical body measuring approximately 37.3 mm in diameter.
High-Speed Protection for Power Semiconductor Devices
Semiconductor devices can be damaged by fault currents within a very short period. An aR fuse is designed to interrupt short-circuit currents rapidly, limiting the energy that passes through the circuit and helping protect components such as diodes, thyristors, IGBTs and power-conversion modules.
The Mersen W097263 is a partial-range fuse intended primarily for short-circuit protection. Appropriate overload protection should therefore be provided separately where required by the equipment design and applicable electrical standards.
Typical Applications
- Variable frequency drives and motor-control systems.
- Industrial rectifiers and power converters.
- Inverters and uninterruptible power supplies.
- DC drive equipment.
- Soft starters and semiconductor switching systems.
- Industrial automation and power-distribution assemblies.
