Empty Enclosures for Pushbuttons - PlasticThe 3SB3 range of enclosures are in grey plastic. They are empty enclosures for 1, 3, or 6 command positions.Round range, nominal diameter 22 mm Cable routing on the top and bottom Each 1 x M20 metric cable gland for 1 and 3 command positions Each 1 x M25 metric cable gland for 6 command positions Mounting holes are located external to the terminal compartment ### 外壳提供的外壳有 22mm 孔，除非另有说明。