3 position rotary switch CE CQC ROHS 26 years experience fixing size:16mm used for instrument, electronic appliances 3-position rotary switch; Max Rating Current & Voltage :3A 250V ACContact Resistance: ≤50mΩInsulation Resistance:≥1000MΩDielectric Strength:1500VMachine Life:250,000 cyclesElectronic Life:25000cycles The shape include:round,square,rec