Why Choose the Mersen G1000276 High-Voltage Fuse?
The Mersen G1000276, also identified by catalogue number 45DB240V10PTD, is a high-voltage DIN back-up fuse-link designed to protect medium-voltage transformers against the thermal and dynamic effects of short-circuit currents. It forms part of the Mersen Limitor®-PTD range, which combines dependable current-limiting protection with controlled power dissipation for use in modern high-voltage switchgear.
Rated at 10 A and 24 kV AC, the G1000276 is suitable for transformer protection in combination with air-insulated or gas-insulated switchgear. During a severe fault, the fuse interrupts the short-circuit current rapidly, helping to reduce thermal stress, mechanical forces and potential damage within the transformer and associated distribution equipment.
The fuse incorporates an 80 N thermal striker, which provides an additional response to excessive temperature and can operate a compatible switchgear tripping mechanism. Its robust DIN-format construction includes pure silver fuse elements, silver-coated copper end caps and a ceramic body measuring approximately 56 mm in diameter and 442 mm in length.
Key Advantages
- Reliable high-voltage back-up protection for medium-voltage transformers.
- 24 kV AC voltage rating for high-voltage distribution systems.
- 10 A rated current for compatible transformer applications.
- Controlled power dissipation supports effective integration with switchgear.
- Current-limiting operation reduces thermal and mechanical fault stresses.
- Integrated 80 N thermal striker for temperature-responsive tripping.
- Suitable for use with air-insulated and gas-insulated switchgear.
Key Features
- Mersen Limitor®-PTD back-up fuse series.
- DIN high-voltage transformer fuse-link.
- 24 kV AC rated voltage.
- 10 A rated current.
- Controlled power dissipation design.
- Approximately 56 mm body diameter.
- Approximately 442 mm overall length.
- 80 N thermal striker mechanism.
- Pure silver fuse elements for consistent electrical performance.
- Silver-coated copper end caps and durable ceramic body.
- Designed for installation in compatible high-voltage fuse holders.
- RoHS-compliant construction.
The Mersen G1000276 is a back-up fuse-link intended to interrupt high short-circuit currents above its specified minimum breaking current. It is typically coordinated with other protective equipment to provide effective protection across the required operating range of a medium-voltage transformer installation.
Its controlled power dissipation and thermal striker make it particularly suitable for use within compact switchgear assemblies. If excessive heat develops, the thermal striker can activate the associated switching mechanism, helping to disconnect the circuit before the temperature presents a risk to the fuse compartment or surrounding equipment.
Typical Applications
- Medium-voltage transformer protection.
- Air-insulated high-voltage switchgear.
- Gas-insulated high-voltage switchgear.
- Transformer feeder panels.
- Fuse-switch combination units.
- Industrial electrical distribution networks.
- Commercial and infrastructure substations.
- Medium-voltage controlgear installations.
