Why Choose the Mersen G209306 High-Voltage Fuse?
The Mersen G209306, catalogue number 45DB120V10P, is a high-voltage DIN back-up fuse-link engineered to provide dependable protection for medium-voltage transformers against damaging short-circuit currents. As part of the proven Mersen Limitor®-P range, it delivers reliable current-limiting performance for high-voltage switchgear, transformer feeders and electrical distribution systems.
Rated at 12 kV AC and 10 A, the G209306 rapidly interrupts high fault currents, helping to minimise thermal and mechanical stress on transformers, busbars, cables and associated switchgear. Its robust construction ensures long service life in demanding industrial and utility environments.
Manufactured with a durable ceramic body, pure silver fuse elements and silver-coated copper end caps, the fuse incorporates a standard 80 N striker for operation of compatible switchgear mechanisms or fuse indication. The DIN-format fuse measures approximately 56 mm in diameter and 292 mm in length.
Key Advantages
- Purpose-designed high-voltage back-up fuse for transformer protection.
- 12 kV AC rated voltage for medium-voltage installations.
- 10 A rated current.
- 63 kA breaking capacity for dependable fault interruption.
- Current-limiting operation helps minimise equipment damage.
- Integrated 80 N striker for switchgear tripping or indication.
- Manufactured using premium ceramic, silver and copper materials.
Key Features
- Mersen Limitor®-P back-up fuse series.
- DIN high-voltage transformer fuse-link.
- 12 kV AC IEC rated voltage.
- 10 A rated current.
- 63 kA maximum breaking capacity.
- 42 A minimum breaking current.
- 3 kA²s clearing I²t.
- 16 W power dissipation at rated current.
- 56 mm fuse diameter.
- 292 mm fuse length.
- 80 N standard striker.
- Pure silver fuse elements with ceramic insulating body.
The Mersen G209306 is a back-up current-limiting fuse developed specifically for transformer protection. It rapidly interrupts high fault currents before they reach their maximum value, reducing the energy released into the protected installation and helping extend the service life of transformers and associated switchgear.
Its integrated striker allows compatible switchgear to respond automatically when the fuse operates, improving operational safety while reducing downtime following electrical faults.
Typical Applications
- Medium-voltage transformer protection.
- High-voltage switchgear.
- Transformer feeder panels.
- Fuse-switch combination units.
- Industrial electrical distribution systems.
- Utility substations.
- Commercial infrastructure power networks.
