The 100-D115EY11 contactor is an MCS D non-reversing contactor developed by Allen-Bradley/Rockwell Automation. It is an IEC-certified contactor from the Allen-Bradley Bulletin 100-D contactors series. It comes with a current rating of 115 Amps for AC-3 utilization category applications. The 100-D115EY11 non-reversing contactor is equipped with electronic AC coils with an electronic interface for advanced control. The coil voltage range of the electronic AC coil (coil code "EY") is 42 to 64 Volts AC. The AC coil operates at 50/60 Hertz. This non-reversing contactor has three power poles for its main contacts and two auxiliary contacts. The auxiliary contacts are set up as one NO contact and one NC contact. If necessary, it is possible to attach optional two-pole external auxiliary contact blocks onto the side of the unit to give it more auxiliary contacts.

The AC-1 operational current rating of the Allen-Bradley 100-D115EY11 non-reversing IEC contactor is 250 Amps at 690 Volts and 40 degrees Celsius. The operating power rating of this contactor is 40 Horsepower at 230 Volts, 75 Horsepower at 460 Volts, and 100 Horsepower at 575 Volts, at an AC frequency of 60 Hertz.  The isolation voltage rating of the 100-D115EY11 contactor is 1000 Volts. The contactor supports switching applications for AC-2 and AC-3 3-phase motors. The unit is compatible with a wide range of optional accessories and connecting components, including suppressor modules, power wiring kits, terminal lugs, control-circuit terminals, terminal shields, mounting plates, and interlocks. The 100-D115 11 contactor measures 170 millimeters in height, 120 millimeters in width, and 156 millimeters in depth, and it weighs 7.28 pounds. The 100-D115EY11 contactor has an IP00 protection class rating in accordance with the IEC 60529 standards.