The invention relates to a novel flame retardant combination comprising, as component A, a phosphinate of the formula (I) and/or a diphosphinate of the formula (II) and/or polymers of these
are identical or different and are C
-alkyl, linear or branched, and/or aryl; R
-alkylene, linear or branched, C
-arylene, -alkylarylene or -arylalkylene; M is calcium ions, magnesium ions, aluminum ions and/or zinc ions, preferably aluminium or zinc; m is 2 or 3; n is 1 or 3; x is 1 or 2; and comprising, as component B, condensation products of melamine and/or reaction products of melamine with phosphoric acid and/or reaction products of condensation products of melamine with phosphoric acid and/or comprising a mixture of these. The invention also relates to the use of the abovementioned flame retardant combination, especially in thermoplastic polymers.