About Product:Brand KC model white in the production of A second open one close three open four open one button switch operation operation Protection way to protect the type 1 2 3 4 working voltage (V) 220 (A) the rated working current heating current 50 M (A) contact to hold (Ω) insulation to hold 1 (M Ω) head protection, level 1 to 1 (times) processing custom is mechanical life