Phoenix Contact 1607431 The contact insert set features a range of articles designated as VARIOCON with a design labeled VC4 and includes 40 positions, catering to conductors with cross sections ranging from 0.14 mm2 to 1.5 mm2. It is rated for operation at voltages up to 160 volts and can handle currents of up to 10 A. The contact connection type is pin-based, with an important note that connectors should only be connected or disconnected when the system is under no load.