Abstract: An assembly for supporting an electrical terminal housing on a carrier rail is provided, including a pair of slide members connected with a guide portion of the housing for sliding movement between latched and released positions. The thickness of the guide is slightly greater than the thickness of the slide members to define a gap therebetween. Each of the slide members includes a lower hook portion engaging a leg of the carrier rail when the slide members are in the latched position to connect the terminal housing with the rail, and a spring is connected with the slide members for normally biasing the hook portions toward the latched position. A first abutment is connected with the housing and a second abutment is connected with the slide members, the second abutment being normally vertically offset from the first abutment by a distance corrsponding with the thickness of the gap.