PDXS isolation source distribution cabinet (trafficsignal source comprehensive distribution cabinet) fully considers theparticularity of the equipment operating environment, achieves the 1:1 voltageof electromagnetism isolation between the input power and main output power bythe method of selecting the good-quality isolation power, and the power outputterminal is not connected with ground, so there is no voltage drop andpotential difference between the two wires of the main output power supply andground, which ensures that there is no danger of electric shock when touchingany wire and fully ensures the personal safety; at the same time, after thefully considered electrified body is closed, the distribution comprehensive boxhas the function which can verify the electricity and ground reliably wheninspecting, and can guarantee the personal safety of inspectors. The producthas been widely applied in the power transmission and distribution systemswhere need safe and reliable power source, like industrial and miningenterprises, electronic industry and traffic signal control of urban roads.