A DIN rail adapter is provided. The DIN rail adapter is comprised of an adapter sub-assembly, a jack/module carrier, and a cam turn tab. The adapter sub-assembly has a grounding bar configured to make contact to the DIN rail when it is mounted. The jack/module earner attaches to the adapter sub-assembly and can be configured to contain a jack, module, or another similar device. The cam turn tab is configured to reversibly connect the grounding bar to the jack or module contained within the jack/module carrier. In one embodiment, the cam turn tab connects the grounding bar to the jack or module by pushing a portion of the grounding bar such that it makes contact with the jack or module within the jack/module carrier.