Why Choose the Mersen V1032948 High Voltage DIN Back-up Fuse?
The Mersen V1032948 is a dependable Limitor®-PTS high voltage DIN back-up fuse designed to protect transformers and associated medium voltage equipment against the thermal and dynamic effects of short-circuit currents. Also identified by catalogue number 45DB120V25PTS2, it combines reliable fault interruption with low power losses and an integrated thermal striker.
The Limitor®-PTS range uses an advanced fuse-element design to reduce power dissipation during normal operation. Its pure silver fuse elements, silver-plated copper end caps and robust ceramic body provide consistent electrical performance and long service life in demanding high voltage switchgear and controlgear installations.
With a rated voltage of 12 kV AC, a rated current of 25 A and an integrated 80 N thermal striker, the Mersen V1032948 is suitable for transformer protection in air-insulated and gas-insulated switchgear. Its standard 56 mm diameter by 292 mm length DIN format supports straightforward installation in compatible fuse bases.
Key Advantages
- Designed specifically for medium voltage transformer protection.
- 12 kV AC rated voltage for compatible high voltage systems.
- 25 A rated current for transformer feeder applications.
- Low power dissipation helps reduce heat generation and energy losses.
- Integrated 80 N thermal striker supports indication and switchgear operation.
- DIN-standard dimensions simplify integration into compatible fuse assemblies.
Key Features
- Mersen Limitor®-PTS series.
- Catalogue number: 45DB120V25PTS2.
- 12 kV AC IEC rated voltage.
- 25 A rated current.
- High voltage DIN back-up fuse for transformer protection.
- 80 N integrated thermal striker.
- Low-loss pure silver fuse-element construction.
- VDE T402 design for medium voltage switchgear applications.
High voltage back-up fuses protect transformers, cables and switchgear by limiting and interrupting substantial short-circuit currents before they cause serious thermal or mechanical damage. The Mersen V1032948 is designed to remain stable during normal transformer operation while responding reliably to high-level electrical faults.
Its low-loss construction helps minimise heat within the switchgear fuse compartment. The integrated thermal striker can indicate fuse operation or actuate a compatible switchgear mechanism, while also helping prevent excessive temperatures under abnormal operating conditions.
Typical Applications
- Medium voltage distribution transformer protection.
- Air-insulated switchgear.
- Gas-insulated switchgear.
- Electrical distribution substations.
- Ring main units and transformer feeders.
- Industrial and utility power distribution networks.
