Why Choose the Mersen Y209298 High-Voltage Transformer Fuse?
The Mersen Y209298, catalogue reference 45DB72V32PD, is a high-voltage DIN back-up fuse-link developed to protect distribution transformers against the damaging effects of short-circuit currents. As part of the proven Mersen Limitor®-PD series, it delivers dependable current-limiting protection for high-voltage switchgear, controlgear and electrical distribution systems.
Rated at 7.2 kV AC and 31.5 A, the Y209298 rapidly interrupts severe fault currents before they reach their maximum prospective peak. This current-limiting performance helps minimise thermal, electrical and mechanical stress on transformers, cables and associated high-voltage equipment.
Constructed with a durable ceramic body, pure silver fuse elements and silver-plated copper end caps, the fuse-link measures 56 mm in diameter and 192 mm in length. It incorporates an integrated 80 N striker for operation of compatible switchgear mechanisms or clear fuse indication following operation.
Key Advantages
- Reliable high-voltage transformer short-circuit protection.
- 7.2 kV AC voltage rating for medium-voltage distribution systems.
- 31.5 A rated current for transformer protection.
- Current-limiting operation reduces fault energy and equipment damage.
- 63 kA breaking capacity for demanding applications.
- Integrated 80 N striker for switchgear operation or indication.
Key Features
- Mersen Limitor®-PD DIN back-up fuse-link.
- Catalogue number: 45DB72V32PD.
- Rated voltage: 7.2 kV AC.
- Rated current: 31.5 A.
- Breaking capacity: 63 kA.
- Minimum breaking current: 123 A.
- Total clearing I²t: 7 kA²s.
- Fuse dimensions: 56 mm diameter × 192 mm length.
- Power dissipation: 23 W.
- Pure silver fuse elements and silver-plated copper end caps.
The Mersen Y209298 is designed to provide dependable protection for distribution transformers operating within medium-voltage electrical networks. Its current-limiting characteristics reduce the energy released during severe electrical faults, helping extend the service life of transformers, switchgear and associated infrastructure.
As a back-up fuse-link in accordance with IEC 60282-1, it is intended to interrupt high fault currents above its specified minimum breaking current and should be coordinated with suitable switching equipment to provide complete transformer protection.
Typical Applications
- Distribution transformer protection.
- Medium-voltage substations.
- Industrial electrical distribution systems.
- High-voltage switchgear and controlgear.
- Utility power distribution networks.
- Renewable energy distribution equipment.
