Why Choose the Mersen F1000137 High-Voltage Back-Up Fuse?
The Mersen F1000137, catalogue reference 45DB240V2PT, is a high-voltage DIN back-up fuse-link designed for protecting distribution transformers against damaging short-circuit currents. As part of the Mersen Limitor®-PT series, it features controlled power dissipation (CPD), helping reduce heat build-up within compact medium-voltage switchgear while maintaining dependable fault protection.
Rated at 24 kV AC and 2 A, the F1000137 is intended for transformer protection in industrial, commercial and utility power distribution systems. It complies with IEC 60282-1 and utilises a ceramic body, pure silver fuse elements and silver-plated copper terminals to provide reliable long-term performance.
An integrated 80 N thermal striker provides mechanical indication and can operate compatible switchgear trip mechanisms when the fuse responds to a fault. The controlled power dissipation design makes the Limitor®-PT range particularly suitable for enclosed switchgear where temperature management is important.
Key Advantages
- High-voltage DIN back-up fuse for transformer protection.
- 24 kV AC rated voltage.
- 2 A rated current.
- Controlled power dissipation (CPD) reduces heat generation.
- 63 kA breaking capacity for reliable fault interruption.
- Integrated 80 N thermal striker.
- Ceramic construction with silver fuse elements.
- Suitable for modern medium-voltage switchgear installations.
Key Features
- Mersen Limitor®-PT series.
- Manufacturer item number F1000137.
- Catalogue number 45DB240V2PT.
- 24 kV AC IEC rated voltage.
- 2 A rated current.
- 63 kA maximum breaking capacity.
- 16 A minimum breaking current.
- Total clearing I²t of 0.4 kA²s.
- Power dissipation of approximately 3 W.
- Integrated 80 N thermal striker.
- DIN clip-mounted construction.
- Controlled power dissipation technology.
The Mersen F1000137 is engineered to interrupt high short-circuit currents before they can damage transformers and associated medium-voltage equipment. Its controlled power dissipation technology helps minimise internal switchgear temperatures while maintaining excellent current-limiting performance.
As a back-up fuse-link, it should be coordinated with suitable overload protection and correctly selected according to transformer characteristics, prospective fault current and the requirements of the associated switchgear installation.
Typical Applications
- Distribution transformer protection.
- Medium-voltage substations.
- Air-insulated switchgear.
- Gas-insulated switchgear.
- Utility power distribution systems.
- Industrial electrical networks.
- Renewable energy transformer installations.
- Commercial medium-voltage switchgear.
