STAUBLI 60.7026-21 is a four-piece modular connector for controlling motors, actuators, and other electrical devices. It is composed of four main parts: a main contact block, a power-actuated contact block, a commutator contact block, and a control contact block. The main contact block contains two female contacts for power and two male contacts for control, and the other three blocks each have one female contact for the various types of signals. The connector is designed for use in harsh and demanding environments, with the contact blocks using an M20 thread size. It has a wide temperature range of -20ºC to +80ºC, and an operating voltage of up to 230 V/AC.