What the 444411004 is
The Molex 444411004 is a 4-circuit, single-row receptacle housing from the Sabre 44441 series — a free-hanging in-line connector sized for mid-power wire-to-wire harness runs. The 7.50 mm pitch and 18 A per-circuit rating place this squarely in industrial power territory, while the latch-lock fastening keeps the mated pair from backing out under vibration. Contacts are ordered separately — this housing accepts female blade socket contacts via crimp termination. That matters at sourcing time: the housing and the terminals are separate BOM lines, and forgetting to spec the contacts is the most common mistake on Sabre orders.