... passed. 3. Professional manufacturer. 4. IP65 protective grade. LW30 series rotary switches applied to circuits of AC 50Hz with working voltave ... ventilating equipments,and AC motors with small power..LW30 series rotary switches have six current ratings:20A,25A,32A,40A,63A ... us to install the contact separetely.LW30 series rotary switches switches comply with:GB/T 14048.3,and IEC 60947-3.Technical ...