8-Position Plug Housing for the Power Triple Lock, High Temp Series
It accepts female blade socket contacts (sold separately) terminated via crimp, and the 6.00 mm pitch provides generous creepage distance for the voltage levels this series typically handles. The gray polyamide (nylon) housing carries a -55°C to 150°C operating range — the defining spec that puts the 'High Temp' in the series name — making it suitable for underhood automotive, industrial oven cabinets, or any environment where the connector sees sustained heat that would soften a standard nylon housing.
6.00 mm Pitch, 2 Rows — What the Layout Means
At 6.00 mm pitch with a 0.319" (8.10 mm) row spacing, this is a wide-pitch power connector — not a signal-density part. The 8 positions are arranged in two rows of 4, and the 6.00 mm centerline gives each circuit enough physical separation to carry substantial current without thermal crosstalk. Compared to the 6-position 1-1644055-3 from the same series family, the 5-1971776-4 adds two circuits at the same 6.00 mm pitch, so the footprint grows in length by one position per row. The 1-1644055-3 uses a 6.35 mm pitch in a box package with glow wire compliance; the 5-1971776-4 is bulk-packaged and does not carry the glow wire feature, so if that compliance is required, the 1-1644055-3 is the correct choice.
Contacts Not Included — Ordering the Mating Half and Terminals
The mating connector for this plug housing is a Power Triple Lock receptacle header (typically a right-angle or vertical through-hole header with the same 6.00 mm pitch and 8 positions, 2 rows).