Why Choose the Mersen E301074 High Speed Semiconductor Fuse?
The Mersen E301074 is a high performance Protistor® square body semiconductor fuse designed to provide ultra-fast protection for sensitive power semiconductor devices in demanding industrial power conversion applications. Engineered for exceptional current limiting performance, it helps safeguard costly equipment against short circuits while reducing downtime and maintenance costs.
Designed for use in modern power electronics, the E301074 is suitable for protecting SCRs, diodes, thyristors, IGBTs and similar semiconductor devices. Its square body construction, silver-plated contacts and low voltage striker indicator make it an ideal solution for OEMs, panel builders and maintenance engineers requiring dependable high-speed circuit protection.
Rated at 550 V AC with a 1600 A current rating, this URD Class semiconductor fuse is commonly installed in rectifiers, inverters, UPS systems, DC drives and other industrial power conversion equipment where rapid fault clearance is essential.
Key Advantages
- Ultra-fast semiconductor fuse for critical equipment protection.
- 1600 A current rating for high power applications.
- 550 V AC rated voltage.
- Protects SCRs, IGBTs, thyristors and diode modules.
- Low I²t characteristics minimise damage during fault conditions.
- Square body design with bolted long blade terminals.
- Integrated striker indicator for fuse operation indication.
Key Features
- Manufacturer: Mersen.
- Series: Protistor® URD.
- Manufacturer Part Number: E301074.
- Catalogue reference: A 055 URD 32 LI 1600.
- Square body high-speed semiconductor fuse.
- Class aR / URD semiconductor protection.
- Bolted long blade (LI) terminals.
- Current limiting construction with silver-plated contacts.
- Low voltage striker indicator.
Reliable Protection for Power Electronics
High speed semiconductor fuses are specifically engineered to protect power electronic devices that cannot tolerate the energy let-through of conventional industrial fuses. The Mersen Protistor® range rapidly clears fault currents, helping extend equipment life and minimise damage to expensive semiconductor assemblies.
The E301074 offers reliable protection in demanding industrial environments where high fault currents and sensitive electronic components require extremely fast interruption characteristics. It is widely specified by equipment manufacturers worldwide for critical power conversion systems.
Typical Applications
- Variable speed drives.
- Industrial rectifiers.
- Power converters and inverters.
- UPS systems.
- DC motor drives.
- Industrial power supplies.
- Semiconductor protection in OEM equipment.
