14DGBFEIRu09790-02.2018-DGbFEIRu5| Electrical connection5.1 Information for contactor and motor contactor selectionAll protection equipment, switching and monitoring devices must comply with the local safety regula-tions and established specifications (e.g. VDE) and regulations as well as the manufacturer’s specifica-tions. Motor protection switch is required! Motor contactors, feed lines, fuses and motor protectionswitches must be rated according to the maximum operating current (see name plate).Use the following overload protection device:A current-dependent time-delayed overload protection device for monitoring of all three phases, notset higher than the rated current of the machine, which must respond at 1.2 times the set currentwithin 2 hours and must not have responded at 1.05 times the set current within 2 hours, or anothercomparable device.INFO Connect the compressor motor in accordance with the circuit diagram(see inside of terminal box).Use suitable cable entry point of the correct protection type (seename plate) for routing cables into the terminal box. Insert the strainreliefs and prevent chafe marks on the cables.Compare the voltage and frequency values with the data for themains power supply.Only connect the motor if these values are the same.DANGER Risk of electric shock! High voltage!Only carry out work when the electrical system is disconnectedfrom the power supply!5 Electrical connectionATTENTION When attaching accessories with an electrical cable, a minimumbending radius of 3 x the cable diameter must be maintained forlaying the cable.