The 5.00 mm pitch provides ample room for larger-gauge crimp terminals and simplifies hand-assembly in the field. Rated to JIS C 0920 Grade Level 7, this housing maintains a watertight seal when mated with the corresponding WPJ plug, making it suited for outdoor lighting, automotive underhood, marine, and industrial washdown environments where moisture ingress is a concern.
The JIS C 0920 Grade Level 7 rating is the highest water-protection class in the JIS standard — equivalent to continuous immersion under defined pressure. For a harness designer this means the mated pair can be routed through splash zones, condensation-prone enclosures, or directly exposed to hose-down cleaning without seal failure.
The crimp termination style allows field-replaceable contacts and custom wire-length harnesses. Mating is with the WPJ series male plug housing (e.g., 03R-WPJV-3-EM's counterpart), secured by the integral latch lock for vibration-resistant retention. The single-row, 3-position layout is keyed by the housing geometry — no risk of mis-mating with other WPJ position counts.