Why Choose the Mersen D1000572 High Voltage Transformer Fuse?
The Mersen D1000572 is a high performance DIN high voltage back-up fuse designed to protect medium voltage transformers against the damaging thermal and mechanical effects of short-circuit currents. Part of the established Mersen Limitor®-P range, it provides dependable fault interruption for high voltage switchgear, controlgear and electrical distribution systems.
Manufactured using pure silver fuse elements, silver-plated copper terminals and a robust ceramic body, the D1000572 delivers reliable electrical performance and excellent mechanical durability. Its high breaking capacity and current-limiting operation help reduce the energy passed into protected equipment during a severe electrical fault.
With a rated operating voltage of 17.5 kV AC, a rated current of 63 A and an integrated 80 N striker, the D1000572 is suitable for transformer protection within compatible medium voltage switchgear. Its VDE T4 design has a 56 mm diameter and a nominal fuse length of 367 mm.
Key Advantages
- Designed specifically for medium voltage transformer protection.
- 17.5 kV AC rated voltage.
- 63 A rated current.
- 63 kA breaking capacity for dependable fault interruption.
- Integrated 80 N striker for compatible switchgear mechanisms.
- Current-limiting operation helps reduce thermal and mechanical stress.
- Pure silver fuse elements provide consistent electrical performance.
- Robust ceramic body supports indoor and outdoor applications.
Key Features
- Mersen Limitor®-P high voltage fuse range.
- 17.5 kV AC IEC rated voltage.
- 63 A ampere rating.
- 63 kA maximum breaking capacity.
- 280 A minimum interrupting rating.
- 100 kA²s clearing I²t at rated voltage.
- VDE T4 design.
- 56 mm diameter and 367 mm nominal fuse length.
- Integrated striker indication system.
- Clip-mounted cylindrical terminal design.
High voltage back-up fuses such as the Mersen D1000572 are designed to interrupt severe short-circuit currents before they can cause extensive damage to transformers and associated switchgear. Their current-limiting action helps reduce peak fault current and let-through energy, protecting equipment from excessive thermal and electrodynamic stress.
The Limitor®-P range combines high breaking capacity, low switching voltage and fast fault interruption with proven construction materials. The D1000572 is typically coordinated with suitable switching and overload protection equipment to provide dependable protection for medium voltage transformer installations.
Typical Applications
- Medium voltage transformer protection.
- High voltage switchgear and controlgear.
- Utility substations and distribution networks.
- Industrial electrical distribution systems.
- Renewable energy substations.
- Commercial and infrastructure power systems.
- OEM medium voltage switchgear assemblies.
- Indoor and outdoor transformer installations.
