Why Choose the Mersen E301994 Protistor® High Speed Semiconductor Fuse?
The Mersen E301994 is a high performance Protistor® square body high speed semiconductor fuse designed to provide ultra-fast protection for sensitive power semiconductor devices used in industrial power conversion equipment. Engineered for demanding applications, it offers excellent current limiting performance to minimise damage caused by short circuits and electrical faults.
As part of the Mersen Protistor® Size 2x72 and 2x73 aR series, this fuse is manufactured using precision die-cut silver fuse elements embedded in solidified sand to achieve low I²t values and high breaking capacity. Silver-plated contact surfaces and non-magnetic hardware provide dependable long-term performance in harsh industrial environments.
Rated at 1800 A and 900 V AC, the E301994 features flush ends with metric threads, Omega connection and an integrated striker indicator, making it suitable for protecting inverters, converters, UPS systems, drives and other high-power semiconductor equipment.
Key Advantages
- High speed semiconductor fuse designed for critical power electronics.
- 1800 A current rating for high power industrial applications.
- 900 V AC IEC rated voltage.
- aR ultra-fast protection for semiconductor devices.
- Low I²t characteristics reduce damage during fault conditions.
- Silver-plated contacts provide excellent electrical performance.
- Integrated striker indicator for fuse operation monitoring.
Key Features
- Mersen Protistor® Size 2x72 and 2x73 series.
- Manufacturer Part Number: E301994.
- Catalogue Number: PC272UD90V18CTF.
- 1800 A rated current.
- 900 V AC IEC rated voltage.
- Square body ceramic fuse construction.
- Flush ends with metric threaded terminals.
- Omega connection.
- Integrated low voltage striker indicator.
- Silver-plated contact surfaces.
Reliable Protection for High Power Semiconductor Equipment
High speed semiconductor fuses are specifically developed to protect power electronic devices that require extremely rapid fault interruption. The Mersen Protistor® range delivers low energy let-through and high interrupting capacity, helping protect IGBTs, SCRs, thyristors and diodes from catastrophic fault currents.
The E301994 is widely used by OEMs and industrial engineers in high-power conversion equipment where dependable semiconductor protection is essential for maintaining system reliability and reducing maintenance costs.
Typical Applications
- Variable speed drives.
- Industrial inverters.
- Power converters.
- Rectifiers.
- UPS systems.
- Renewable energy power conversion.
- Industrial motor control systems.
