A latching mechanism for a mid-power electrical connector is compact, strong, easy to disengage, durable, and low in manufacturing cost. The basic system includes a plug housing and a receptacle housing, each molded from plastic as a single piece, and at least one simple, mainly flat, metal latching tab inserted into a side of the plug housing. During connection of the housings, the latching tabs flex inward as they enter channels in the receptacle housing, and then spring outward to engage with receptacle latching features. In embodiments, wedge-shaped inward plastic protrusions in the channels engage with holes in the latching tabs. Unlatching requires only pressing the latching tabs gently inward. In embodiments, plastic pressing tabs can be pressed inward with fingers to flex and release the latching tabs. In other embodiments, the latching tabs are inaccessible to fingers, and a tool is required to release the latching tabs.