Why Choose the Mersen T209294 High Voltage DIN Back-up Fuse?
The Mersen T209294 is a high performance Limitor®-PD high voltage DIN back-up fuse engineered to protect medium voltage transformers against damaging short-circuit currents. Identified by catalogue number 45DB72V10PD, it is designed in accordance with IEC 60282-1 and VDE 0670 T402, making it ideal for industrial, utility and infrastructure power distribution applications.
Manufactured using a robust ceramic body, pure silver fuse elements and silver-plated copper terminals, the T209294 delivers reliable current-limiting protection with excellent long-term performance. Its integrated 80 N striker provides dependable operation with compatible medium voltage switchgear, ensuring rapid isolation of faulted circuits.
Rated at 7.2 kV AC with a 10 A current rating, the fuse features a 56 mm diameter and 192 mm DIN length. It offers a 63 kA breaking capacity, making it suitable for transformer protection within substations, industrial switchgear and utility distribution networks.
Key Advantages
- Designed specifically for medium voltage transformer protection.
- 7.2 kV AC rated voltage.
- 10 A rated current.
- 63 kA breaking capacity for dependable fault interruption.
- Integrated 80 N striker for coordinated switchgear operation.
- Ceramic construction with pure silver fuse elements for long service life.
Key Features
- Mersen Limitor®-PD series.
- High voltage DIN back-up fuse.
- 7.2 kV AC IEC rated voltage.
- 10 A rated current.
- 56 mm diameter × 192 mm fuse size.
- 63 kA maximum AC breaking capacity.
- Integrated 80 N striker.
- Clip-mounted DIN construction.
- Ceramic body with pure silver fuse elements.
- Silver-plated copper terminals.
High voltage back-up fuses rapidly interrupt damaging short-circuit currents before excessive thermal and mechanical forces can damage transformers, switchgear and associated electrical equipment. Their current-limiting characteristics improve equipment protection whilst helping reduce downtime and maintenance requirements.
The Mersen T209294 is designed for correctly coordinated transformer protection systems where dependable fault interruption, DIN compatibility and reliable striker indication are essential for safe medium voltage operation.
Typical Applications
- Medium voltage transformer protection.
- Distribution substations.
- Industrial power distribution systems.
- Medium voltage switchgear.
- Utility electrical networks.
- Infrastructure and renewable energy installations.
