Sell out, absorbing current quota (6)
I believe the answer is:
ration
'quota' is the definition.
(I've seen this in other clues)
'sell out absorbing current' is the wordplay.
'sell out' becomes 'raton' (I've seen this in another clue).
'absorbing' is an insertion indicator.
'current' becomes 'I' (symbol for electric current).
'raton' going around 'i' is 'RATION'.
(Other definitions for ration that I've seen before include "Fixed restricted allowance" , "Wartime allowance?" , "Fixed allotment" , "Restricted share" , "Quota" .)