Why Choose the Mersen B087332 D122GC75V315EF Fuse?
The Mersen B087332 D122GC75V315EF is a high-performance Protistor® Size 122 gR square body high-speed fuse designed to protect semiconductor devices and DC power systems operating at up to 750 V DC. Manufactured by Mersen, this fuse is specifically engineered for railway traction, power conversion, battery storage and industrial DC applications where rapid fault interruption is essential.
Part of the Protistor® Size 122 gR 750 VDC range, the D122GC75V315EF features open slot blade terminals with an integrated striker indicator for fast fuse status indication. Its low I²t characteristics help minimise damage to expensive semiconductor devices during fault conditions while providing low power losses and long service life.
With a 315 A current rating, 750 V DC IEC rated voltage and a 100 kA DC breaking capacity, the B087332 provides dependable protection for IGBTs, thyristors, diodes, converters, inverters and railway auxiliary power systems.
Key Advantages
- Protistor® Size 122 gR high-speed semiconductor fuse.
- 315 A rated current for demanding DC power applications.
- 750 V DC IEC rated voltage.
- 100 kA DC breaking capacity.
- Very low I²t to help protect sensitive semiconductor devices.
- Integrated striker for remote indication.
- Open slot blade terminals for straightforward installation.
- Low power dissipation and excellent thermal cycling performance.
Key Features
- Mersen Protistor® D122GC75V315EF.
- 315 A rated current.
- 750 V DC IEC rated voltage.
- gR utilisation category.
- 100 kA DC interrupting capacity.
- Square body construction.
- Open slot blade terminals.
- Integrated striker indicator.
- RoHS compliant.
High-Speed Protection for Critical DC Systems
The Mersen D122GC75V315EF is designed to protect modern semiconductor devices by rapidly interrupting fault currents before excessive thermal or electrical stress can damage expensive components. Its gR characteristic provides full-range semiconductor protection, making it suitable for demanding industrial DC installations.
The combination of high interrupting capacity, low I²t performance and robust square body construction makes this fuse ideal for railway traction systems, battery energy storage, renewable energy converters and industrial power electronics.
Typical Applications
- Railway traction and auxiliary power systems.
- Battery energy storage systems (BESS).
- Renewable energy inverters.
- Industrial DC converters.
- Variable speed drives.
- UPS systems.
- Semiconductor protection.
