Why Choose the Mersen T1000264 High Voltage DIN Back-up Fuse?
The Mersen T1000264 is a premium Limitor®-PTD high voltage DIN back-up fuse designed to provide dependable short-circuit protection for medium voltage transformers installed within air-insulated and gas-insulated switchgear. Manufactured to IEC 60282-1 and VDE 0670 T402, it combines controlled power dissipation (CPD) with an integrated thermal striker for enhanced operational safety and reduced heat generation.
The Limitor®-PTD range has been developed specifically for transformer protection, using a ceramic body, pure silver fuse elements and silver-plated copper end caps to provide excellent electrical performance and long service life. Its patented controlled power dissipation technology helps reduce internal switchgear temperatures whilst maintaining reliable fault interruption.
Rated at 12 kV AC with a 16 A current rating, the T1000264 features a 56 mm diameter, a 292 mm DIN fuse length and an integrated 80 N thermal striker. It is widely used within transformer substations, industrial distribution systems and compact medium voltage switchgear from leading manufacturers.
Key Advantages
- Designed specifically for medium voltage transformer protection.
- 12 kV AC rated voltage.
- 16 A rated current.
- Controlled power dissipation reduces heating inside enclosed switchgear.
- 63 kA breaking capacity for dependable fault interruption.
- Integrated 80 N thermal striker for coordinated switchgear operation.
Key Features
- Mersen Limitor®-PTD series.
- High voltage DIN back-up fuse.
- 12 kV AC IEC rated voltage.
- 16 A rated current.
- 56 mm diameter × 292 mm fuse size.
- 63 kA maximum AC breaking capacity.
- Controlled 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 T1000264 combines dependable fault interruption with controlled power dissipation technology and a thermal striker, making it particularly suitable for enclosed medium voltage switchgear where minimising 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.
