A centrifugal electric pump assembly includes a pump body formed by a volute and an intake duct and a delivery duct. The pump also includes an electric motor, contained in an accommodation casing, the casing facing with one of its ends the pump body and being fixed to the pump body by means of a plurality of fixing elements; and an electrical box, the electrical box facing the other end of the casing. The casing and the electrical box are contained at least partially within a single shell. The pump further includes a terminal strip, connected to the electrical box and arranged in a compartment which extends from the shell, the compartment being axially offset with respect to the direction of extension of the electric pump. The assembly has at least one hole which passes at least partially through the compartment and/or the shell, the hole being extended in the same direction as a corresponding element for fixing the casing to the pump body.