The ABB PS1‑4‑0‑65 is a 3‑phase busbar accessory designed to simplify and enhance the power distribution connections between multiple manual motor protectors such as MS116 and MS132 series devices. It provides a common current path that allows up to four motor protectors to be fed from a shared 3‑phase supply, improving wiring neatness, reliability, and installation speed in control panels and low‑voltage distribution setups.