This paper presents a new robotic system designed to automatically install two-split cable spacers on cables. For simplicity, we refer to this robot as the Spacer Installation Robot (SIR). First, the paper introduces the components and functions of each part of the system. Next, a mechanical feasibility analysis of the spacer installation module is conducted. A simplified visual recognition method, tailored to the specific mechanical structure, is then proposed. Finally, the feasibility of the robot’s spacer installation capability is validated through experiments conducted on an indoor test platform.