What do the various numbers on a MPPT controller mean?

[SimonM]

I’ve seen the likes of 75/15 100/30 100/50 and suchlike, what do they mean?

 

[wildebus]

I’ve seen the likes of 75/15 100/30 100/50 and suchlike, what do they mean?

These would be Victron ones...
First number is maximum INPUT Voltage of the PV/Solar Array
Second number is the maximum OUTPUT current of the Controller

Note: The maximum Wattage of the controller is NOT INPUT Voltage x Current, but OUTPUT Voltage x Current. 100/30 on a 12V system is 440W; on a 24V system it is 880W.

 

[SimonM]

Thanks

 

[trevskoda]

And he did not even CHARGE you for advice.