<p>A electrical device comprising a housing (20) having cooling fins (24) located in a central portion along an exterior surface (20B) of the housing and a laminated magnetic stack (16A) disposed within the housing and interfacing with an interior surface (20A) of the housing at said central portion, wherein said cooling fins are alternatively higher and smaller on an inlet manifold and in opposition on an outlet manifold and wherein all the high cooling fins have a same height for supporting a cover plate (26) having an inlet hole (26A) receiving a liquid cooling from said inlet manifold and an outlet hole (26B) delivering the liquid cooling to said outlet manifold and which rests on said higher cooling fins in order to create a liquid cooling path between higher and smaller cooling fins from said inlet hole to said outlet hole.</p>
