Why Choose the Mersen C300497 High-Speed Semiconductor Fuse?
The Mersen C300497 is a high-performance Protistor® square body high-speed semiconductor fuse engineered to provide exceptional protection for sensitive power semiconductor devices in demanding industrial applications. Designed as part of the renowned Mersen Protistor® Size 72 aR series, this fuse delivers rapid fault interruption to protect IGBTs, thyristors, diodes and other power electronic components.
Designed for use in modern power conversion equipment, the C300497 combines high breaking capacity with low let-through energy, helping minimise damage during short-circuit conditions. Its robust construction, silver-plated contacts and solidified sand filling provide reliable long-term performance in harsh industrial environments.
With a 450 A current rating and 1250 V AC IEC / 1300 V AC UL voltage rating, the Mersen C300497 is ideally suited for variable speed drives, UPS systems, renewable energy converters and industrial power control equipment. The integrated striker indicator also enables simple fuse status monitoring and maintenance.
Key Advantages
- High-speed aR semiconductor fuse designed for protecting power electronic devices.
- 450 A current rating for demanding industrial applications.
- 1250 V AC IEC / 1300 V AC UL voltage rating.
- Extremely fast fault clearing helps minimise semiconductor damage.
- Integrated striker indicator for remote status indication.
- High interrupting capacity suitable for modern power conversion equipment.
Key Features
- Mersen Protistor® Size 72 aR series.
- 450 A rated current.
- 1250 V AC IEC / 1300 V AC UL rated voltage.
- Ultra-fast aR protection characteristic for semiconductor devices.
- Square body fuse with flush metric threaded terminals.
- Integrated striker mechanism.
- Silver-plated contact surfaces.
- Suitable for protection of IGBTs, SCRs, diodes and power converters.
Reliable Protection for Power Electronics
High-speed semiconductor fuses are specifically designed to protect expensive power electronic components from catastrophic short-circuit faults. Their ultra-fast operating characteristics limit fault energy before sensitive semiconductor devices can be damaged, helping maximise equipment uptime while reducing repair costs.
The Mersen Protistor® range is trusted by OEMs and industrial engineers worldwide for protecting variable frequency drives, renewable energy systems, UPS equipment, motor drives and industrial power conversion systems where dependable semiconductor protection is essential.
Typical Applications
- Variable frequency drives (VFDs).
- Industrial motor drives.
- Power converters and inverters.
- UPS and backup power systems.
- Renewable energy power conversion equipment.
- Protection of IGBT, SCR and diode modules.
