Why Choose the Mersen V1000104 High Voltage DIN Back-up Fuse?
The Mersen V1000104 is a premium Limitor®-P high voltage DIN back-up fuse developed for reliable transformer protection in medium voltage electrical systems. Also identified by catalogue number 45DB120V2P, it is designed in accordance with IEC 60282-1 and is specifically intended to protect distribution transformers against damaging short-circuit currents.
Manufactured using high-quality ceramic bodies, pure silver fuse elements and silver-plated copper end caps, the V1000104 delivers excellent electrical performance, low power dissipation and dependable long-term reliability. The integrated 80 N thermal striker enables operation of compatible switchgear mechanisms or fuse indication systems, helping improve operational safety and maintenance efficiency.
With a 12 kV AC rated voltage, 2 A current rating and a compact 56 mm diameter × 292 mm length DIN format, the Mersen V1000104 is ideally suited for transformer protection within substations, switchgear and industrial power distribution systems.
Key Advantages
- Designed specifically for high voltage transformer protection.
- 12 kV AC IEC rated voltage.
- 2 A current rating for compatible transformer applications.
- Integrated 80 N thermal striker for indication and switch operation.
- High breaking capacity provides dependable fault interruption.
- Manufactured using premium silver and ceramic materials for long service life.
Key Features
- Mersen Limitor®-P series.
- Catalogue number: 45DB120V2P.
- 12 kV AC IEC voltage rating.
- 2 A rated current.
- DIN high voltage back-up fuse design.
- 80 N thermal striker.
- 56 mm diameter × 292 mm length.
- Manufactured to IEC 60282-1 standards.
The Mersen Limitor®-P range has been developed specifically for transformer protection within medium voltage networks. These back-up fuses operate rapidly during high fault currents while remaining reliable during normal operating conditions, helping minimise equipment damage and improve system reliability.
The integrated thermal striker allows compatible switchgear or indication mechanisms to operate automatically when the fuse clears a fault, providing improved safety and faster fault identification for maintenance personnel.
Typical Applications
- Distribution transformer protection.
- Medium voltage substations.
- High voltage switchgear.
- Industrial electrical distribution systems.
- Utility power networks.
- Ring main units and transformer feeders.
