... Voltage Regulator(Adjusting Resistance): External Potentionmeter Load max current:10A,20A,25A,30A,40A. Solid State Voltage ... 240VAC 0-480VACload max current10A 20A 25A 30A 40Aexternal potentionmeter470-560KΩ/2Wangle of flow scope0-170°output leakage current≤ ... ≥2500VACinsulating resistance≥100MΩswitching time≤1mSfrequency range50-60Hzload current safety factor(resistive load)50-60%(inductive load) ...