Why Choose the Mersen T1032947 High Voltage DIN Back-up Fuse?
The Mersen T1032947 is a premium Limitor®-PTS high voltage DIN back-up fuse designed to provide reliable protection for medium voltage transformers against damaging short-circuit currents. Identified by catalogue number 45DB120V20PTS2, it combines low power dissipation with an integrated 80 N thermal striker, making it ideal for modern air-insulated and gas-insulated switchgear installations.
Manufactured in accordance with IEC 60282-1 and VDE T402, the Limitor®-PTS range uses a ceramic body, pure silver fuse elements and silver-plated copper end caps to provide dependable current-limiting performance whilst reducing heat build-up inside switchgear. This innovative design helps improve equipment reliability and extend service life.
Rated at 12 kV AC with a 20 A current rating, the T1032947 features a 56 mm diameter, a 292 mm overall length and a 65 kA breaking capacity. It is widely used for transformer protection within utility substations, industrial power distribution systems and compact medium voltage switchgear.
Key Advantages
- Designed specifically for medium voltage transformer protection.
- 12 kV AC rated voltage.
- 20 A rated current.
- Low power dissipation reduces heat generation within switchgear.
- 65 kA breaking capacity for dependable fault interruption.
- Integrated 80 N thermal striker for coordinated switchgear operation.
Key Features
- Mersen Limitor®-PTS series.
- High voltage DIN back-up fuse.
- 12 kV AC IEC rated voltage.
- 20 A rated current.
- 56 mm diameter × 292 mm fuse size.
- 65 kA maximum AC breaking capacity.
- Low power dissipation technology.
- Integrated 80 N thermal striker.
- Ceramic body with pure silver fuse elements.
- Clip-mounted DIN construction.
High voltage back-up fuses rapidly interrupt damaging short-circuit currents before excessive thermal and mechanical forces can affect transformers, switchgear and associated electrical equipment. Their current-limiting characteristics improve equipment protection whilst reducing downtime and maintenance costs.
The Mersen T1032947 combines dependable fault interruption with low power dissipation technology and a thermal striker, making it particularly suitable for enclosed medium voltage switchgear where reducing internal temperatures is essential for long-term reliability.
Typical Applications
- Medium voltage transformer protection.
- Gas-insulated switchgear (GIS).
- Air-insulated switchgear (AIS).
- Distribution substations.
- Industrial power distribution systems.
- Utility electrical networks.
