Why Choose the Mersen A1032953 High-Voltage Transformer Fuse?
The Mersen A1032953, catalogue number 45DB240V16PTS, is a premium DIN high-voltage back-up fuse engineered for transformer protection in medium-voltage electrical systems. As part of the advanced Mersen Limitor®-PTS series, it combines low power dissipation with an integrated 80 N thermal striker, making it ideal for modern air-insulated and gas-insulated switchgear.
Designed using pure silver fuse elements, silver-plated copper terminals and a robust ceramic body, the A1032953 delivers dependable protection against damaging short-circuit currents while minimising thermal losses during normal operation. Its innovative thermal striker helps prevent overheating within the fuse compartment, enhancing safety and extending equipment service life.
With a rated voltage of 24 kV AC, a rated current of 16 A and a 65 kA breaking capacity, this fuse is ideally suited for protecting distribution transformers in industrial plants, utilities and compact substations. The Limitor®-PTS range is also recommended for compatible gas-insulated switchgear from manufacturers including Siemens and Ormazabal.
Key Advantages
- Designed specifically for medium-voltage transformer protection.
- 24 kV AC IEC rated voltage.
- 16 A rated current.
- 65 kA breaking capacity.
- Low power losses improve operating efficiency.
- Integrated 80 N thermal striker.
- Suitable for air-insulated and gas-insulated switchgear.
- Manufactured using premium ceramic and silver components.
Key Features
- Mersen Limitor®-PTS transformer back-up fuse.
- Manufacturer part number: A1032953.
- Catalogue number: 45DB240V16PTS.
- Rated voltage: 24 kV AC.
- Rated current: 16 A.
- Maximum breaking capacity: 65 kA.
- Minimum interrupting current: 73 A.
- Fuse dimensions: 56 × 442 mm.
- Thermal striker: 80 N.
- Clip-mounted cylindrical terminals.
The Mersen A1032953 rapidly interrupts damaging short-circuit currents before they can affect transformer windings or associated switchgear. Its current-limiting characteristics reduce both peak fault current and fault energy, helping improve equipment reliability and minimise maintenance costs.
The integrated thermal striker provides an additional level of operational safety by responding to excessive temperatures within the fuse compartment while also providing mechanical indication and compatibility with suitable switchgear trip mechanisms.
Typical Applications
- Medium-voltage distribution transformers.
- Gas-insulated switchgear (GIS).
- Air-insulated switchgear.
- Compact transformer substations.
- Industrial electrical distribution.
- Utility power networks.
- Commercial medium-voltage installations.
