... Product Description 2012 New LW31B Rotary Switch 1,20-175A current rotary switch 2,110-690V voltage rotary switch 3,CE, ROHS certification ... ventilating equipments,and AC motors with small power..LW30 series rotary switches have six current ratings:20A,25A,32A,40A,63A ... which enable us to install the contact separetely.LW30 series rotary switches switches comply with:GB/T 14048.3,and IEC ...