1The base, upper cover and arc extinction cover of the switch are all made of arc resistant plastic, with good mechanical strength, flame retardant and dielectric properties. 2The arc extinction cover is equipped with multiple metal arc chutes, which strengthens the arc extinction ability of the switch, eliminating the harm of the electric arcing and improving the contact life. 3Applicable to distribution circuit and motor circuit with high short-circuit current. 4Simple structure, easy to disassemble and assemble, safe and reliable. 5Comply with GB14048.3 standard.Item Type: Fuse Type Isolating Switch Model: HR17B-160/30 Rated Voltage: 400/690V Rated Current: 160A Frequency: 50Hz Use Category: AC-22B AC-23B Rated Conditional Short-Circuit Current: 50KA Mechanical Life: 1000 Electrical Life: 5000 Standard: GB14048.3 Options: Copper, Brass (Optional)1 x Fuse Type Isolating Switch