An uninterruptible power/CATV signal coupler includes a base, a cover, and a bridge connection device. The base forms an accommodation chamber. A cover is detachably connected to the base, and includes a circuit board and two sleeves. The sleeves are connected to one surface of the circuit board. The bridge connection device is contained inside the accommodation chamber and includes a first housing, a second housing, two conductive terminals inserted into the two sleeves respectively, two press elements pressed by the circuit board, a bridge connection element disposed between the first housing and the second housing, and two seesaw elements contact with the bridge connection element. The two seesaw elements are pivotally connected to the second housing. When the bridge connection element are elastically pressed by the press elements respectively, the bridge connection element is disconnected from the conductive terminals and contacts the base.