SY557 porcelain fuse unit 200A,380- 500V stability, anti-aging, high temperature resistance low factory price porcelain fuse unit 1.Material: Porcelain 2.200A,380-500V3.Easy installation,and safty operation. 4. Low factory price with good quality,timely service5. Stability, anti-aging, high temperature resistance 6.Different sizes,different colors according to customer's requirment porcelain fuse ...
