|I agree with the above.|
To get UL listing (and/or equivalent approval), the power supply must not be able to burn your house down. This means that it does not matter if a fusable link, an electronic component, a circuit breaker, or an old fashion fuse breaks the circuit to stop the current flow to prevent a fire, it just MUST do it consistently. A quality product should be made to survive this to be used again, but cheap is cheap, and they may be able to sell you another one some day.
You have to be a little bit crazy to keep you from going insane.