The 3SB3 range of enclosures are in grey metal. They are empty enclosures for 1, 2, 3, 4 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 to 3 command positions
Each 1 x M25 metric cable gland for 4 and 6 command positions
Mounting holes are located external to the terminal compartment