Why Choose the Mersen S1000263 High Voltage Transformer Fuse?
The Mersen S1000263 is a premium DIN high voltage back-up fuse-link engineered to protect transformers and medium voltage equipment against damaging short-circuit currents. As part of the advanced Mersen Limitor®-PTD series, it combines controlled power dissipation (CPD) with an integrated thermal striker, making it ideal for modern compact air-insulated and gas-insulated switchgear installations.
Manufactured in accordance with IEC 60282-1 and VDE 0670 T402, the S1000263 is built using pure silver fuse elements, silver-coated copper contact caps and a durable ceramic body. This construction provides dependable transformer protection, excellent fault interruption and reduced heat generation inside switchgear.
With a rated voltage of 12 kV AC and a rated current of 10 A, the Mersen S1000263 is ideally suited for medium voltage transformer protection. Its 56 mm diameter, 292 mm fuse length and integrated 80 N thermal striker provide straightforward installation into compatible DIN switchgear systems.
Key Advantages
- Designed specifically for medium voltage transformer protection.
- 12 kV AC rated voltage for industrial and utility networks.
- 10 A rated current.
- Controlled power dissipation reduces switchgear heating.
- Integrated 80 N thermal striker for compatible switchgear tripping.
- High current-limiting performance minimises damaging fault energy.
- Pure silver fuse elements ensure dependable interruption.
- Recommended for compatible Siemens and Ormazabal gas-insulated switchgear.
Key Features
- Mersen Limitor®-PTD back-up fuse series.
- Catalogue number: 45DB120V10PTD.
- 12 kV AC rated voltage.
- 10 A rated current.
- 56 mm fuse diameter.
- 292 mm fuse length.
- Integrated 80 N thermal striker.
- Controlled power dissipation (CPD).
- Pure silver fuse elements.
- Silver-coated copper contact caps.
- High-strength ceramic body.
The Mersen S1000263 rapidly interrupts high prospective short-circuit currents before excessive thermal or mechanical stress can damage transformers, switchgear and associated equipment. Its current-limiting characteristics minimise fault energy while the controlled power dissipation design helps reduce heat inside enclosed switchgear.
The integrated thermal striker provides dependable operation of compatible switchgear trip mechanisms while helping improve protection coordination in compact transformer installations.
Typical Applications
- Medium voltage transformer protection.
- Gas-insulated switchgear (GIS).
- Air-insulated switchgear.
- Industrial power distribution.
- Utility substations.
- Renewable energy installations.
- Manufacturing facilities.
- OEM medium voltage equipment.
