The Rockwell Automation end barriers are required to provide the necessary insulation for the last terminal block in a group.
End barrier for spring clamp terminal block This has grey colour
End Barrier, For Spring Clamp Type TB, 2 x 36.95 x 90mm (0.08 x 1.45 x 3.54 in), Gray, Pkg. Qty. of 50, for Use With 1492-L6T, LG6T
End Barrier, For Spring Clamp Type TB, 2 x 36.95 x 90mm (0.08 x 1.45 x 3.54 in), Gray, Pkg. Qty. of 50, for Use With 1492-L6T, LG6T