A joint connector has a notch for exposing an outer peripheral surface of a bus bar-containing holder to the exterior when the holder is fitted in a holder receiving chamber is formed in a peripheral wall of the holder receiving chamber. Steps are formed at the outer peripheral surface of the bus bar containing holder, each of the steps being located at the notch when the bus bar-containing holder is fitted in the holder receiving chamber, thereby enabling the lifting of the bus bar-containing holder. A step is provided at the notch, so that the notch has a stair-like configuration. A plurality of notches and a plurality of pairs of steps are provided at the peripheral wall of the holder receiving chamber and the outer peripheral surface of the bus bar-containing holder, respectively.