The 104-E205KN22 contactor is an IEC 104 reversing contactor developed by Allen-Bradley/Rockwell Automation. It is an MCS-E reversing contactor with a large frame size. It can handle heavy-duty applications in the AC-3 utilization category. It includes an electronic AC/DC coil with a wide voltage range, making it easier for the users to select a coil that fits their requirements. The 104-E205KN22 reversing contactor has an operating current of 205 Amps in AC-3 applications and 350 Amps in AC-1 applications. It can accommodate AC motors with power ratings of 110 kilowatts at voltages ranging from 220 to 415 Volts and 132 kilowatts at voltages ranging from 440 to 500 Volts at a frequency of 50 Hertz. The 104-E205KN22 reversing contactor has an IEC-rated isolation voltage of 1000 Volts.

The Allen-Bradley 104-E205KN22 IEC 104 reversing contactor has 3 main contact poles and 2 auxiliary contacts that are supplied by the mechanical interlock. The mechanical interlock is used to connect 2 adjacent contactors. The dimensions of the reversing contactor with the mechanical interlock (catalog number 100-EM) are 196 millimeters in height, 210 millimeters in width, and 152 millimeters in depth. The standard coil included with this reversing contactor is an electronic AC/DC coil with no PLC input. The coil has a control voltage range of 250 to 500 Volts AC/DC. The operating frequency of the coil is 50 or 60 Hertz for AC voltage. The 104-E205KN22 reversing contactor has bar connections, and the main connection terminal has a conductor cross-section area ranging from 10 to 150 square millimeters. As per the UL/CSA standards, the maximum recommended tightening torque for the main connection terminals is 18 N-m or 160 pounds on an inch.