Phoenix Contact 1017632 The Coupler connector features five positions and is designed for release with a tool or by hand, typically in a black color scheme. It is rated for AC voltages up to 690 V at currents of up to 35 A, with conductor cross-sections ranging from 1.5 mm2 to 6 mm2. The connection method employs screw connections and contact points that resemble sockets. Minimum cable diameters are 8 mm and maximums are 21 mm, accommodating a range of applications.