I think some translation software has gone astray here; not sure what "no-brake" truly implies.
However, if you are purchasing a PSU then the PSU must equal or exceed (prefered) the total wattage required by all of the computer components being serviced - i.e., provided power.
The other consideration is that you are looking for a UPS (Universal Power Supply) that will provide power to both pc's if power is lost. There are online calculators to help identify a product that meets your requirements.
That all said, what does "no-brake" truly mean?