Why Choose the Mersen T209340 High Voltage DIN Back-up Fuse?
The Mersen T209340 is a dependable Limitor®-P high voltage DIN back-up fuse designed to protect medium voltage transformers against the damaging effects of short-circuit currents. Identified by the catalogue number 45DB240V10P, it provides reliable current-limiting protection for high voltage switchgear, controlgear and electrical distribution systems.
Manufactured using a robust ceramic body, pure silver fuse elements and silver-plated copper end caps, the T209340 delivers consistent electrical performance and long-term reliability. As a back-up fuse manufactured in accordance with IEC 60282-1 and VDE T4, it is intended to interrupt substantial fault currents while helping reduce thermal and mechanical stress on transformers and associated switchgear.
Rated at 24 kV AC with a 10 A current rating, the T209340 features a 56 mm diameter, a 442 mm overall length and an integrated 80 N striker. Its cylindrical DIN format enables secure installation within compatible medium voltage fuse holders and transformer protection assemblies.
Key Advantages
- Designed specifically for medium voltage transformer protection.
- 24 kV AC rated voltage for high voltage distribution systems.
- 10 A rated current for compatible transformer applications.
- Current-limiting operation helps reduce damaging fault energy.
- Integrated 80 N striker for coordinated switchgear operation.
- High quality ceramic and silver construction supports long service life.
Key Features
- Mersen Limitor®-P series.
- High voltage DIN back-up fuse-link.
- 24 kV AC IEC rated voltage.
- 10 A rated current.
- 63 kA maximum interrupting rating.
- 56 mm diameter × 442 mm length.
- Integrated standard 80 N striker.
- Ceramic fuse body with pure silver fuse elements.
- Silver-plated copper end caps.
- Clip-mounted cylindrical DIN construction.
High voltage back-up fuses rapidly interrupt substantial short-circuit currents before excessive thermal and mechanical forces can damage transformers, cables and associated switchgear. Their current-limiting characteristics reduce the peak fault current and the total electrical energy passed into the protected installation.
The Mersen T209340 is designed for use within a correctly coordinated transformer protection system. Its integrated striker can operate compatible switch-disconnectors or indication mechanisms when the fuse responds to a fault, helping isolate the affected circuit and improve installation safety.
Typical Applications
- Medium voltage transformer protection.
- High voltage distribution switchgear.
- Transformer substations.
- Industrial electrical distribution systems.
- Utility power networks.
- Infrastructure and renewable energy installations.
