Power RBwAP2nD

Good afternoon. Question on the power of the Mikrotik wAP access point. To power the access point we use the original mikrotik 48POW power supply
When the connector is connected to the access point, a short circuit occurs and the access point stops working. POE does not work AC does not work
What am I doing wrong. On the body of the access point and in the specification it is indicated that it can work from 12-57 volts.
What’s wrong?
Thank you in advance for your response.