Why Choose the Mersen R209315 High Voltage Transformer Fuse?
The Mersen R209315 is a premium DIN high voltage back-up fuse-link developed to protect transformers and medium voltage equipment against damaging short-circuit currents. As part of the trusted Mersen Limitor®-P series, it delivers reliable current-limiting performance for medium voltage switchgear, substations and industrial power distribution systems.
Designed in accordance with IEC 60282-1, the R209315 is specifically intended for transformer protection. Manufactured using pure silver fuse elements, silver-coated copper contact caps and a robust ceramic body, it provides dependable fault interruption, excellent electrical performance and long service life in demanding industrial and utility applications.
Rated at 12 kV AC and 100 A, the Mersen R209315 is suitable for medium voltage transformer protection. Its 78 mm diameter, 292 mm body length and integrated 80 N standard striker enable straightforward installation into compatible DIN fuse bases and switchgear.
Key Advantages
- Designed specifically for medium voltage transformer protection.
- 12 kV AC rated voltage for industrial and utility power systems.
- 100 A rated current.
- Current-limiting design reduces damaging fault energy.
- Integrated 80 N standard striker for compatible switchgear tripping.
- Pure silver fuse elements ensure reliable interruption.
- Robust ceramic construction for long operational life.
- Manufactured in accordance with IEC 60282-1.
Key Features
- Mersen Limitor®-P back-up fuse series.
- Catalogue number: 45DB120V100P.
- 12 kV AC rated voltage.
- 100 A rated current.
- 78 mm fuse diameter.
- 292 mm fuse length.
- Integrated 80 N standard striker.
- Pure silver fuse elements.
- Silver-coated copper contact caps.
- High-strength ceramic body.
The Mersen R209315 rapidly interrupts high prospective short-circuit currents before excessive thermal or mechanical stress can damage transformers, switchgear or associated electrical equipment. Its current-limiting characteristics help minimise fault energy while providing dependable protection for valuable medium voltage assets.
As a high voltage back-up fuse-link, the R209315 is intended for coordinated transformer protection and should be used alongside suitable overload protection. The integrated striker enables compatible switchgear trip mechanisms or indication systems to operate when the fuse has interrupted a fault.
Typical Applications
- Medium voltage transformer protection.
- Industrial switchgear.
- Utility substations.
- Power distribution systems.
- Renewable energy installations.
- Manufacturing facilities.
- Commercial infrastructure.
- OEM medium voltage equipment.
