Abstract: A first power connector includes a housing and three terminals. A front portion of the housing has a first outer wall surrounding three terminal seats and a partition wall, and the partition wall and the first outer wall defines a retraction tunnel. The housing has a latch one piece formed with the first outer wall, the latch is formed as part of the first outer wall defining the retraction tunnel and is adopted to be sunk into the retraction tunnel when an external force is applied thereto. In addition, three terminals are secured in the three terminal seats respectively, and the retraction tunnel has no terminal disposed therein.