Hi Figueroa, taking into account the starting current of that 48.0 LRA compressor equal to 48 amperes peak and the supply voltage that uses 220 alternating volts, we can affirm that this compressor is within 2 tons in air conditioning, 24000 Btu / h, or 6000 refrigerators / h. For this Samsung compressor capacity, it uses electrolytic capacitors, from 60 microfarads, to 450 volts of alternating current. For the indoor unit you can use a universal type as a main electronic board, and so that the plates are not complicated because a specific one does not appear, which supports the consumption of a compressor of that capacity through its power relay, I recommend that you use any in its place, available in the market, and connect this relay of this own board, first to feed one of the coil phase inputs of a magnetic contactor, which you should also buy and place in the outdoor unit, so that this is the one that takes as an interface, the supply current to the compressor. In this way you would be protecting the relay contacts on the electronic board and at the same time taking care of that board. For this purpose, you should use a magnetic contactor of at least 220 volts and 50 amps, so that it does support the compressor's starting and blocking consumption, which I repeat can reach 48 amps, in case of a failure to start the same, for any reason that could occur, hence the importance of using a magnetic contactor capable of supporting such amperage consumption. I will upload an image as an example of how to connect the magnetic in the outdoor unit, the letter (S) in this diagram, represents the connection from the relay to feed the compressor from the electronic board, to one of the phase inputs of the magnetic contactor coil. The connection of the main board in the indoor unit depends on the type of universal board you can buy and the type of engine used by the indoor turbine fan. Generally the same universal plate, brings its connection diagram, in the packaging box itself or in an added printed manual. Luck. S @ lu2 friovega63.