... high temperature resistance low factory price porcelain fuse unit 1.Material: Porcelain ,accessories:copper,iron,iron with zinc or nickle plated2.15A ... ,380-500V3.Easy installation,and safty operation4. Low factory price with good quality,timely service5. Stability, anti-aging, high temperature ... customer's requirment7. convient and safety to use low factory price -SY604 porcelain fuse unit