This accessory consists of horizontal rear connections for the 4-pole withdrawable ComPact NS 630b-1600 and Masterpact NT 06-16. They are designed to fit the chassis of the withdrawal device. These horizontal rear connections are intended for top mounting. They can be directly connected to flat or vertical rails, depending on the position of the connections. Cables with lugs can be adapted with some additional accessories. The distance is 70 mm and the width of the terminals is 44 mm. They are sold as a 4-piece set.