Why Choose the Mersen R076927 High-Speed Semiconductor Fuse?
The Mersen R076927 is a Protistor® high-speed cylindrical semiconductor fuse with striker, engineered to provide ultra-fast short-circuit protection for sensitive semiconductor devices used in industrial power electronic systems. Designated A050URD3T13I, this fuse complies with IEC 60269-1 and IEC 60269-4 and is designed for applications requiring rapid fault interruption and high breaking capacity.
Part of the Mersen Protistor® 10 × 38 mm aR series, the R076927 features an integrated trip indicator (striker) to provide a visual indication when the fuse has operated. Its current-limiting design significantly reduces fault energy, helping to protect expensive semiconductor devices such as IGBTs, SCRs, diodes and rectifiers from catastrophic failure.
Rated at 3.15 A and 500 V AC, the Mersen R076927 is suitable for industrial drives, inverters, UPS systems, power supplies and other power electronic equipment where dedicated semiconductor protection is required.
Key Advantages
- High-speed aR semiconductor fuse for sensitive power electronics.
- 3.15 A rated current for low-current semiconductor circuits.
- 500 V AC rated voltage.
- Integrated trip indicator (striker).
- Current-limiting operation reduces fault energy.
- Compact 10 × 38 mm cylindrical construction.
Key Features
- Manufacturer: Mersen.
- Series: Protistor® Size 10 × 38 aR.
- Catalogue number: A050URD3T13I.
- Manufacturer reference: R076927.
- Rated current: 3.15 A.
- Rated voltage: 500 V AC.
- aR partial-range semiconductor protection.
- Integrated striker/trip indicator.
Designed for High-Speed Semiconductor Protection
Power semiconductor devices can be irreparably damaged within milliseconds during a fault. Protistor® high-speed semiconductor fuses operate considerably faster than conventional industrial fuses, limiting both peak fault current and thermal energy to help maximise equipment reliability and reduce maintenance costs.
The aR operating characteristic provides short-circuit protection for semiconductor circuits and should be used in conjunction with appropriate overload protection elsewhere in the electrical system.
Typical Applications
- Variable speed drives.
- Industrial inverters.
- UPS systems.
- Power converters.
- Industrial power supplies.
- Motor control equipment.
- Rectifiers.
- Semiconductor protection circuits.
