Why Choose the Mersen P209313 High Voltage Transformer Protection Fuse?
The Mersen P209313 is a dependable high voltage DIN back-up fuse-link designed to protect transformers and associated medium voltage equipment against damaging short-circuit currents. As part of the established Mersen Limitor®-P series, it provides reliable current-limiting protection for high voltage switchgear, controlgear and electrical distribution systems.
This fuse-link is manufactured using pure silver fuse elements, silver-plated copper terminals and a robust ceramic body. These carefully selected materials provide consistent electrical performance, effective fault interruption and dependable long-term operation in demanding industrial, commercial and utility installations.
With a rated voltage of 12 kV AC, a rated current of 63 A and a maximum breaking capacity of 63 kA, the P209313 is suitable for transformer protection systems requiring a DIN-format fuse-link. Its integrated standard 80 N striker supports fault indication and operation of compatible switching equipment following fuse operation.
Key Advantages
- Designed specifically for medium voltage transformer protection.
- 12 kV AC rated voltage for industrial distribution systems.
- 63 A current rating for compatible transformer circuits.
- 63 kA breaking capacity for dependable fault interruption.
- Integrated 80 N striker for fault indication and switchgear operation.
- Current-limiting operation helps reduce damaging fault energy.
- Pure silver fuse elements provide consistent electrical characteristics.
- Robust ceramic construction supports dependable service life.
Key Features
- Mersen Limitor®-P high voltage DIN back-up fuse-link.
- Catalogue number: 45DB120V63P.
- Rated voltage: 12 kV AC.
- Rated current: 63 A.
- Fuse body size: 56 mm diameter × 292 mm length.
- Overall product length: 358 mm.
- Integrated standard 80 N striker mechanism.
- Clip mounting with cylindrical terminals.
- VDE T4 transformer protection design.
- Back-up fuse classification in accordance with IEC 60282-1.
High voltage back-up fuse-links protect transformers by rapidly limiting and interrupting severe short-circuit currents before excessive thermal or mechanical stress can damage transformer windings, switchgear or connected distribution equipment. Their current-limiting action also helps reduce the peak current and energy passed into a fault.
The Mersen P209313 combines dependable fault interruption with an integrated striker that can provide fault indication or operate compatible switching equipment. As a back-up fuse-link, it should be coordinated with suitable protective equipment capable of clearing lower-level overload currents.
Typical Applications
- Medium voltage transformer protection.
- High voltage switchgear assemblies.
- Transformer substations.
- Ring main units.
- Industrial power distribution systems.
- Utility distribution equipment.
- Renewable energy installations.
- OEM transformer controlgear.
