Why Choose the Mersen T1000103 High Voltage DIN Back-up Fuse?
The Mersen T1000103 is a premium Limitor®-P high voltage DIN back-up fuse engineered to protect medium voltage transformers against the effects of damaging short-circuit currents. Manufactured in accordance with IEC 60282-1, it provides dependable transformer protection for high voltage switchgear and electrical distribution systems.
The fuse is constructed using a durable ceramic body, pure silver fuse elements and silver-plated copper terminals to deliver reliable current-limiting performance and long service life. An integrated 80 N striker provides dependable operation with compatible switchgear, helping isolate faulted circuits quickly and safely.
Rated at 12 kV AC with a 1 A current rating, the T1000103 features a 56 mm diameter and 292 mm DIN fuse size. It is ideally suited for protecting instrument transformers, auxiliary transformers and other specialist medium voltage transformer applications requiring precise overcurrent protection.
Key Advantages
- Reliable medium voltage transformer protection.
- 12 kV AC rated voltage.
- 1 A rated current for specialised transformer applications.
- 63 kA breaking capacity for dependable fault interruption.
- Integrated 80 N striker for coordinated switchgear operation.
- Ceramic construction with silver fuse elements for long service life.
Key Features
- Mersen Limitor®-P series.
- High voltage DIN back-up fuse.
- 12 kV AC IEC rated voltage.
- 1 A rated current.
- 56 mm diameter × 292 mm DIN size.
- 63 kA AC maximum breaking capacity.
- Integrated 80 N striker.
- Clip-mounted installation.
- Ceramic body with pure silver fuse elements.
- Silver-plated copper terminals.
High voltage back-up fuses provide rapid interruption of damaging short-circuit currents before excessive thermal and mechanical forces can damage transformers and associated switchgear. Their current-limiting characteristics help improve equipment protection, minimise downtime and reduce maintenance costs.
The Mersen T1000103 is designed for use in correctly coordinated transformer protection systems where dependable operation, compact DIN dimensions and reliable fault indication are essential for medium voltage installations.
Typical Applications
- Medium voltage transformer protection.
- Instrument transformers.
- Auxiliary transformers.
- Medium voltage switchgear.
- Industrial electrical distribution systems.
- Utility substations.
