A redundant control circuit (10) for an electrical system, comprising: a power supply (14); characterized in that: at least one pair of electrical components, that is, a pair of heater assembly (16, 18) , disposed within electric delsistema; switching means (32, 34) specially adapted for electrically connecting, selectively, each dedicho pair of heater assemblies (16, 18) to said power source (14) via lines feeding (20,22), means (100, 102, 110) specially adapted to monitor the functionality of each of said pair of heating conjuntosde (16, 18) ymedios (76) specially adapted to control said switching means (32, 34) so that initially electrically connect a first one (16) of said pair of heater assemblies to said power source (14) and electrically paraconectar second (18) of said pair of heater assemblies to said power source (14), p erodesconectando it said first (16) of said pair of heater assemblies from said power source (14) if dichoprimero (16) of said pair of heater assemblies is determined to be in fault by said desupervisión (100, 102, 110 ), so that the operation of the electrical system has not put out of operation if one of said heating deconjuntos pair (16, 18) is in fault.
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