Why Choose the Mersen A086710 D121GC75V200EF Fuse?
The Mersen A086710 D121GC75V200EF is a high-performance Protistor® Size 121 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 engineered for demanding railway, traction, renewable energy and industrial power conversion applications where extremely fast fault interruption is essential.
Designed with open slot blade terminals and an integrated striker indicator, the D121GC75V200EF offers straightforward installation and rapid indication when the fuse has operated. Its low I²t characteristics help minimise damage to sensitive semiconductor devices, improving equipment protection and reducing downtime.
With a 200 A current rating, 750 V DC IEC voltage rating and an impressive 100 kA DC breaking capacity, the A086710 provides dependable protection for inverters, converters, UPS systems and railway auxiliary power circuits.
Key Advantages
- Protistor® Size 121 gR high-speed semiconductor fuse.
- 200 A current rating for demanding DC applications.
- 750 V DC IEC rated voltage.
- 100 kA DC breaking capacity.
- Very low I²t to minimise semiconductor damage.
- Open slot blade terminals with integrated striker indicator.
- Excellent cycling capability and low power loss.
Key Features
- Mersen Protistor® D121GC75V200EF.
- Item number: A086710.
- Square body high-speed fuse.
- gR utilisation category for semiconductor protection.
- 750 V DC IEC rating.
- 200 A rated current.
- 100 kA DC interrupting capacity.
- Open slot blade terminals.
- Integrated striker for fuse operation indication.
- RoHS compliant.
Designed for Semiconductor and Railway DC Protection
The Mersen D121GC75V200EF has been specifically developed to protect modern semiconductor equipment operating on DC supplies. Its extremely fast operating characteristics reduce thermal and electrical stress on IGBTs, diodes, thyristors and other power electronic devices during fault conditions.
This fuse is widely used in railway traction systems, DC converters, UPS equipment, battery energy storage systems and industrial drives where dependable high-speed protection is critical to maintaining system reliability.
Typical Applications
- Railway traction and auxiliary power circuits.
- DC power converters.
- Variable speed drives.
- UPS systems.
- Battery energy storage systems.
- Renewable energy inverters.
- Industrial semiconductor protection.
