Why Choose the Mersen Z1018324 High-Voltage Transformer Fuse?
The Mersen Z1018324, catalogue reference 45DB240V80PTS, is a high-performance DIN high-voltage back-up fuse-link designed to protect power transformers against the thermal and dynamic effects of short-circuit currents. Part of the advanced Mersen Limitor®-PTS series, it combines low power dissipation with a thermal striker for dependable protection in medium-voltage switchgear and electrical distribution systems.
Rated at 24 kV AC and 80 A, the Z1018324 provides a maximum breaking capacity of 65 kA. Its current-limiting operation helps reduce peak fault current and clearing energy, minimising electrical, thermal and mechanical stress on transformers, switchgear and connected equipment.
The fuse-link incorporates an 80 N thermal striker, which provides positive operation indication and helps prevent overheating within the fuse compartment by actuating compatible switchgear mechanisms. Pure silver fuse elements, silver-plated copper terminals and a durable ceramic body provide reliable performance in air and gas insulated switchgear applications.
Key Advantages
- DIN high-voltage back-up fuse-link for transformer protection.
- 24 kV AC rated voltage for medium-voltage distribution systems.
- 80 A rated current for suitably coordinated transformer circuits.
- 65 kA maximum breaking capacity for dependable fault interruption.
- Low power dissipation helps reduce heat inside switchgear compartments.
- Integrated 80 N thermal striker for indication and switchgear operation.
- Current-limiting performance reduces thermal and dynamic fault effects.
- Manufactured using pure silver elements and a ceramic insulating body.
Key Features
- Mersen Limitor®-PTS back-up fuse series.
- 24 kV AC IEC rated voltage.
- 80 A ampere rating.
- 65 kA maximum breaking capacity.
- 280 A minimum interrupting rating.
- 99 kA²s clearing I²t at rated voltage.
- 153 W power dissipation at rated current.
- VDE T402 design configuration.
- Thermal striker indication system with 80 N operating force.
- Silver-plated copper cylindrical terminals.
- Pure silver fuse elements and ceramic body.
The Mersen Z1018324 is engineered to interrupt severe short-circuit currents before they can cause extensive damage to transformer windings, electrical connections and associated switchgear. Its current-limiting characteristics reduce the peak current and total fault energy passing through the protected circuit.
The Limitor®-PTS design uses specially developed fuse elements to reduce power losses and heat generation. Its thermal striker can actuate compatible switching equipment if abnormal heating occurs, helping protect the fuse compartment and improve the reliability of compact air or gas insulated switchgear installations.
Typical Applications
- Medium-voltage power transformer protection.
- Gas insulated switchgear systems.
- Air insulated switchgear installations.
- Compact switchgear and ring main units.
- Utility substations and electrical distribution networks.
- Industrial medium-voltage power systems.
