The 6.00 mm pitch and 8.10 mm row spacing put this in the power interconnect class, not signal-density territory. The gray polyamide (nylon) housing carries a -55°C to 150°C operating range, which suits it for under-hood automotive, industrial cabinet, or outdoor telecom enclosures where the connector sees elevated ambient temperatures.
The 5-1971876-3 is a plug housing that mates with the matching Power Triple Lock receptacle housing (same series, 9-position, 3-row). Termination is crimp, which is field-serviceable and suited for automated harness assembly. The latch holder locks the mated pair; the secondary lock feature in the housing confirms full terminal seating before the connector is shipped as a mated assembly.