What the 919991238 is
The Molex 919991238 is the 3-circuit member of the 91999 RAST 5 header series — a European-automation power-interconnect header with a 0.197" (5.00 mm) pitch, through-hole solder termination, and a latch-lock fastening type that keeps the mated pair seated under industrial vibration. Contact material is brass with 118.1 µin (3.00 µm) tin plating, and the insulation body is PA66 (Nylon 6/6). Rated 16 A per circuit at 250 V, with an operating envelope of -20°C to 120°C — the upper limit set by the housing material, not the contact.
What the 16 A rating means for the circuit
Fit and keying
Board guide and keyed features on the housing align the header into the matching RAST 5 receptacle and prevent mis-insertion — the pitch and latch geometry together define the mate, not just the position count. The header is a male-blade type that accepts the corresponding female RAST 5 housing on the wire side of the connection.
Sourcing reality
The 91999 series sits in the RAST 5 power-connector space used across European industrial automation and white-goods manufacturing. The 3-position count, 16 A rating, and tin-plated brass contact combination is a narrow selection point — confirm the mate exists in the same series and that the wire-side connector is specified in the BOM before raising an RFQ.