Device for the external electrical connection of a photovoltaic panel (1), which comprises a male connector which is arranged on the edge of the photovoltaic panel (1) and which comprises a plurality of external connection strips (5, 5′, 5″) which are electrically connected to the electricity-generating cells, a bar for electrically interconnecting the external strips, comprising electrical junction runners with respect to the external connection strips and electrical circuits which are suitable for the interconnection of the electricity-generating cells, a first external connector which comprises an electrical junction plate with respect to a first external connection strip and a second external connector which comprises an electrical junction plate with respect to a second external connection strip and a sleeve for retaining the assembly of the male connector, the interconnection bar, the first and the second external connector.