The 7.92 mm pitch gives enough room between circuits for the 600 V class creepage distances the series is designed around, while keeping the housing compact for a two-circuit run. It uses a latch lock to hold the mated pair together — a positive retention feature that resists vibration better than a friction-only fit, which matters in industrial cabinet or automotive underhood harnesses where the cable gets tugged or the machine shakes. The housing is moulded from natural PA66 (Nylon 6/6), rated for -30°C to 105°C operation, so it handles the thermal cycling of an engine bay or a hot equipment enclosure without embrittlement.
Crimp Termination — Contacts Are Ordered Separately
The housing accepts the Universal Power series crimp contacts, terminated onto the wire with a standard hand or pneumatic crimp tool before insertion. Because the contacts are field-installed, you can match the wire gauge to the current draw — the series typically accepts 14-20 AWG, though the exact wire range depends on the specific terminal part number you pair with it. For a 2-position plug, the crimp-and-insert workflow is fast: strip, crimp, push until the lance clicks, then mate the housings.
The 178125-1 plug mates with the Universal Power series header (male pin) or receptacle housing that matches the same 7.92 mm pitch and 2-position layout. The natural colour and single-row, 2-position format make it easy to identify in a harness bundle — no guesswork when you're tracing the power feed.
No official second-source or direct cross-reference is recorded — the Universal Power series is TE Connectivity proprietary tooling, so stick with the listed order code for the housing and select the matching TE crimp contacts for the terminals.