Knife switches 200 and 400A use single blades, 600, 1000, and 1500A use double blades, and 2000, 3000, and 4000A use two sets of blades in parallel. All blades are equipped with sheet mounted springs on both sides to obtain contact pressure, and the blades the connecting plate and contacts are all tin plated to enhance surface protection and improve the contact resistance of wire connections.
APPLICATION：
Application in distributed photovoltaic AC grid-connected box.
STANDARDS：
▶ GB/T 14048.3
▶ IEC/EN 60947-3
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