A process cartridge detachably mountable to a main assembly of an electrophotographic image forming apparatus, the main assembly including an output contact movable between an electrical connecting position and a retracted position retracted from the electrical connecting position, a displaceable member for moving the output contact, and an elastic function member for elastically urging the displaceable member to urge the output contact toward the retracted position away from the electrical connecting position, the process cartridge includes A electrophotographic photosensitive drum; process means actable on the electrophotographic photosensitive drum; an operating member; a movable operation member movable relative to a cartridge frame and operable by the operating member, after the process cartridge is mounted to the main assembly of the apparatus, to be engaged with the displaceable member provided in the main assembly of the electrophotographic image forming apparatus to move the displaceable member, in interrelation with which the output contact is moved from the retracted position to the electrical connection position against an elastic force of the elastic function member; and an input electrical contact for receiving a voltage for enabling the process means by engagement with the output contact moved to the electrical connecting position.