The Molex (Brad Harrison/Woodhead) 1R4D04A16A120 is a Mini-Change female panel or bulkhead-mount receptacle, giving a fixed mating point on an enclosure, junction box, or machine panel for connecting Mini-Change 4-pole male cordsets and plugs. It’s supplied with 12 inches of 18AWG PVC lead wire for hardwiring into the panel’s internal circuitry, and uses a single-keyway straight design rated at 300VAC/DC and 5.6A. As a receptacle rather than a cable-mounted connector, it’s the fixed half of the Mini-Change quick-disconnect system, letting field cordsets be connected and disconnected without opening the enclosure each time. A practical panel-mount connector for control cabinets, junction boxes, and machine-side wiring using the Mini-Change 4-pole standard.