SGW SGW31 rotary switch manual chanegover switch with face plate are our newest products ,its capacity of braking and connecting is better than others .what is more ,its volume is smaller w33 rotary switch series are suitable for controlling whole set switch cabinet and electromotor . accords to international electric standard; IEC947-3,IEC947-5,Chinese standard ;GB14048.3,GB14048.5,GB5226.1 and European standard EN6-947-1,EN60947-3,EN60947-5 and EN60204-1.