An electrophotographic image forming apparatus to which a cartridge is detachably mountable for forming an image on a recording medium. The apparatus includes a main body electrical contact member having a main body electrical contact electrically connected to a cartridge electrical contact to supply electric power to an electric power supplied member of the cartridge when the cartridge is mounted on the apparatus main body. The main body electrical contact is movable relative to the apparatus main body. The apparatus also includes an electrical contact cover member having an exposed portion for exposing the main body electrical contact, and covering the main body electrical contact member, and attached to the main body electrical contact member so that the exposed portion is movable relative to the main body electrical contact member. The electrical contact cover member is moved so that the two contacts are electrically connected together in the exposed portion.