The 100-E305KD11 3-pole contactor is an AC and DC-operated direct-on-line type of contactor that has been manufactured by Allen-Bradley/Rockwell Automation. The 100-E305KD11 3-pole contactor is part of the 100-E product line in the Allen-Bradley IEC 100 Contactors series. The Allen-Bradley IEC 100 series contactors, including the 100-E305KD11 3-pole contactor, have been designed to be environmentally friendly, to be compatible with several optional accessories, including PLCs, to have compact dimensions for easy installation, and to have 3 direct-on-line poles or main contactors. The 100-E305KD11 3-pole contactor is also one of the Allen-Bradley IEC 100 series contactors that comes with 1 normally closed auxiliary contact and 1 normally open auxiliary contact built into it, and it does not need to use auxiliary contact blocks.

The Allen-Bradley/Rockwell Automation 100-E305KD11 AC and DC-operated direct-on-line contactor from the IEC 100 Contactors series can support PLC applications if it has a special version of its standard electronic AC/DC coil that has a PLC input. The coil voltage ranges are 100 to 250 Volts AC (with 50 to 60 Hertz frequency) and 100 to 250 Volts DC for both the PLC-supporting and the non-PLC-supporting versions of the electronic coil. If the coil module in the 100-E305KD11 direct-on-line contactor wears out, it can be replaced with a new one. Different replacement coil modules are available from Allen-Bradley/Rockwell Automation depending on whether the 100-E305KD11 direct-on-line contactor is using a PLC or not. Replacement terminal kits are also available as spare parts for the 100-E305KD11 direct-on-line contactor, and terminal hardware kits and mounting hardware kits make it easier for the contactor to be mounted and connected in different systems.