The insertable fuse is a key component employed for overcurrent protection in oil-immersed box-type transformers. By installing an appropriately rated fuse, it provides comprehensive protection for the transformer based on parameters such as current level and oil temperature. The plug-in design offers advantages including simple installation, reliable operation, and convenient fuse replacement, making it widely adopted for high-voltage side protection in American-style pad-mounted transformers. This device is utilized to safeguard both transformers and power systems, and is applicable to various configurations, including conventional combined transformers and underground transformers. The fuse holder is compatible with a range of fuse types, such as current-responsive fuses, dual-sensitivity fuses, dual-element fuses, and high-current overload fuses. It can be integrated with either standalone or backup fuses to effectively isolate high-magnitude fault currents, thereby protecting electrical equipment and ensuring grid stability.
The dual-fuse protection system has now become the industry standard for protecting both singlephase and three-phase transformers.

Electrical Performance

Standard Packaging

1.Fuse

2.Double-sensitive fuse

3.Installation and Operation Manual

4.Product Qualification Certificate

Order Number Explanation