Why Choose the Mersen K302229 Protistor® High-Speed Semiconductor Fuse?
The Mersen K302229 is a Protistor® Size 2×73 square body high-speed semiconductor fuse designed to provide exceptional protection for modern power electronic equipment. Engineered specifically for IGBTs, thyristors, diodes, rectifiers, inverters and power conversion systems, it rapidly interrupts fault currents to minimise energy let-through and protect valuable semiconductor devices from catastrophic damage.
Manufactured as catalogue number PC273UD11C14CTF, the K302229 is rated at 1400 A with a 1100 V AC IEC voltage rating. It features a robust 2×73 square body construction, flush-end metric threaded terminals and an integrated striker indicator, making it ideal for demanding industrial power conversion, motor drives, renewable energy systems and UPS installations.
Part of the trusted Mersen Protistor® semiconductor fuse family, the K302229 is manufactured with silver-plated contacts and die-cut fuse elements embedded in high-grade silica sand to deliver low I²t values and a high interrupting capacity for dependable long-term performance.
Key Advantages
- Ultra-fast aR semiconductor protection fuse.
- 1400 A rated current.
- 1100 V AC IEC voltage rating.
- High interrupting capacity for demanding industrial applications.
- Integrated striker indicator for fuse status indication.
- Flush-end metric threaded terminals for secure installation.
- Designed specifically for semiconductor protection.
Key Features
- Mersen Protistor® Size 2×73.
- Catalogue number PC273UD11C14CTF.
- 1400 A current rating.
- 1100 V AC IEC voltage rating.
- Ultra-fast aR operating characteristic.
- Square body ceramic construction.
- Flush-end metric threaded terminals.
- Integrated striker indicator.
Reliable Protection for Industrial Power Electronics
Protistor® semiconductor fuses are engineered to interrupt high fault currents before excessive thermal energy reaches sensitive semiconductor devices. Their ultra-fast operating characteristics help improve equipment reliability, minimise maintenance costs and reduce production downtime in demanding industrial environments.
The K302229 is widely specified for industrial motor drives, renewable energy converters, UPS systems, heavy-duty power supplies and high-power electronic installations where dependable semiconductor protection is essential.
Typical Applications
- Variable frequency drives (VFDs).
- Industrial inverters and converters.
- IGBT and thyristor protection.
- UPS systems.
- Renewable energy converters.
- Industrial automation equipment.
- High-power semiconductor circuits.
