YMW26 series changeover switch is used in the circuits of AC 50Hz, rated voltage up to 690V, DC voltsge up to 240V, rated current up to 100A, to not frequently switch on/off circuit. Transfer and control circuits, also it can directly conrtol small capaciity motor orbe used for master control or electric meters. The switch is used widely in circuit contro, test equipment, switch or motor master control, welding machine and etc. Advantages: Small size. Multifunctin, compact structure, high quality material, good insulation, agile operation, reliability, safety, good apperance. YMW26-20/04GS or YMH13 type armor power switch is off to protect functions for protection as to switch.