Ericsson PKB4118GCPI

The rated output current is the maximum load current that a power supply can provide at a specified ambient temperature. A power supply can never provide more current that it's rated output current unless there is a fault, such as short circuit at the load.

That power available at a specified output of a device under specified conditions of operation.

Isolation voltage refers to a test of the ability of an insulator to minimize the flow of electric current with a high applied voltage.