Automatic Transfer Switch

Range 100 A up to 125 A, 4 polesFunctionThe controller tests the voltage of two lines of power supply. When the voltage is higher than 110% of rated value, it is regarded as over voltage. When the voltage is lower than 85% of rated value, it is regarded as under voltage. The microcomputer controlled circuit will conduct logic judgment of testing result, and the dealing result will send ON & OFF directive to the electrical operation mechanism by delay (adjustable) circuit drive. And the above-mentioned testing result will be displayed on LCD screen of automatic controller.