potentiometer, dimmer potentiometer,dimmer switch 1)big current endurance 2)VDE,CB,N, ... than 100 MOHM at DC500VDielectricAc1500V,1 minute(between carbon plate and contact)AC750V,1 minute(between open contacts)Resistance ... 30%)Rotational resitance ≤47mVResidual resistanceR≥250 KOHM 0.1% max of total resistance250 KOHM>R>10KOHM 20 ... life50,000 cyclesElectrical life.30,000 cycles........ Potentiometer