The 500-DOD940 Contactor is an open-type top-wired contactor that is manufactured by Allen-Bradley/Rockwell Automation. It is part of the Bulletin 500 Contactors series and it has all the power connections positioned at the top of the contactor to enhance wiring convenience. Additionally, the Allen-Bradley 500-DOD940 NEMA AC Contactor allows for field wiring so that it can support 3-phase and single-phase devices. The 500-DOD940 Contactor can be purchased as a modular kit or as its individual components, depending on the application. The complete kit version ships ready to use right away, while the individual components usually ship separately and they can then be assembled to make the complete device and with custom features. The 500-DOD940 Contactor features a coil with a voltage rating of 120 Volts AC, and it comes with an auxiliary contact as well as load side terminal shield as standard features when it ships as a complete kit.

The Allen-Bradley 500-DOD940 NEMA AC Contactor has a NEMA size of size 3, and it has a continuous current rating of 90 Amps. It also features the open NEMA enclosure type and nominal coil voltage ratings of 110 Volts and 120 Volts at 50 Hertz frequency minimum and 60 Hertz frequency maximum. The 500-DOD940 NEMA AC Contactor has 4 power poles and one normally open auxiliary contact. Some of the main features of this contactor and the entire Bulletin 500 Contactor series of devices include a base contactor, load side terminal shield for device protection, top wiring setups, and several selectable options like the number of power poles and the coil voltage rating. They are certified and approved for compliance with the CSA, IEEE, CE Marked, CSA, ABS, and UL standards.