... quality,low factory price easy installation,and safty operation SY-60A porcelain fuse unit 1.Material: Porcelain ,accessories:copper,iron,aluminium ... zinc or nickle plated,also can be customised.2.50/60A,380-500V3.Easy installation,and safty operation4. Low factory price ... to customer's requirment6. Convient and safety to use. SY-60A porcelain fuse unit