CTJ-3A-03 is a metallic rail component of the DEUTSCH CTJ Series Common Termination System, qualified to AS81714 Series II standards for robust wire termination in demanding aerospace, defense, and marine environments. The rail is constructed from aluminum alloy with stainless steel clips and is available in multiple finishes including nickel plated (standard), anodized, olive drab cadmium, or clear. It accommodates three modules with dimensions of 1.554 inches (A dimension) and 1.036 inches (B dimension), weighing 0.28 ounces (7.95 grams). The CTJ3 metallic rails provide a reliable mounting solution for housing and organizing multiple electronic modules while maintaining sealed, corrosion-resistant connections. These rails are widely used in aerospace wiring harnesses, defense systems, and marine applications where compact, lightweight, and highly reliable module organization is essential.