Heat shrink component that has first dimensions (102A, 104A) in an expanded state and second dimensions (102B, 104B) in a shrunk state, at least one of the first dimensions being larger than the corresponding second dimension and said heat shrink component (100, 100A, 100B) comprising: a heat shrink layer, and at least one heating unit that is arranged in thermal contact to at least a part of said heat shrink layer, said heating unit being operable to heat up the heat shrink layer to its heat shrink temperature, wherein the heating unit comprises at least one electrically conductive lead (106, 116) with an electrical conductivity of more than 3·10 7 S/m and comprises aluminum and/or copper, wherein the heat shrink layer is formed at least partly as a sleeve with a longitudinal axis for covering at least a part of an electrical connection and/or at least a part of a termination, wherein said heating unit is arranged to at least partly encompass said sleeve, wherein said electrically conductive lead encompasses said sleeve forming a plurality of rings being arranged around the longitudinal axis of said sleeve, and/or wherein said electrically conductive lead encompasses said sleeve forming a helix around the longitudinal axis of said sleeve, and/or wherein the electrically conductive lead comprises a plurality of interconnected elongated sections that extend along the longitudinal axis of said sleeve and that are distributed around the circumference of the sleeve, wherein the electrically conductive lead (106, 116) comprises a plurality of sections which are electrically connected in series and/or in parallel, and wherein said heating unit further comprises a plurality of heating elements interconnected by said electrically conductive lead. a heat shrink layer, and at least one heating unit that is arranged in thermal contact to at least a part of said heat shrink layer, said heating unit being operable to heat up the heat shrink layer to its heat shrink temperature, wherein the heating unit comprises at least one electrically conductive lead (106, 116) with an electrical conductivity of more than 3·10 7 S/m and comprises aluminum and/or copper, wherein the heat shrink layer is formed at least partly as a sleeve with a longitudinal axis for covering at least a part of an electrical connection and/or at least a part of a termination, wherein said heating unit is arranged to at least partly encompass said sleeve, wherein said electrically conductive lead encompasses said sleeve forming a plurality of rings being arranged around the longitudinal axis of said sleeve, and/or wherein said electrically conductive lead encompasses said sleeve forming a helix around the longitudinal axis of said sleeve, and/or wherein the electrically conductive lead comprises a plurality of interconnected elongated sections that extend along the longitudinal axis of said sleeve and that are distributed around the circumference of the sleeve, wherein the electrically conductive lead (106, 116) comprises a plurality of sections which are electrically connected in series and/or in parallel, and wherein said heating unit further comprises a plurality of heating elements interconnected by said electrically conductive lead.