Jumper Plug for 0.300" Row Spacing
The 1-1437507-0: This is a 2-position, 2-row jumper plug from the TE 8136 series, designed for through-hole solder termination. The 0.300" (7.62mm) row spacing is wider than a standard 0.100" header — it's built for applications where you need a physical jumper between two adjacent rows on a terminal block or relay socket, not a dense signal interconnect.
The black housing is a visual key — it helps identify the jumper on the board without reading a part number. The 'Programmable' feature in the spec likely refers to a removable jumper that can be cut or left open for configuration options.