The sealed circular plug that doesn't need a separate backshell
The Hirose HR30-6PA-6S(71) is a 6-position (power) circular plug with female sockets, designed for free-hanging in-line cable termination. It belongs to the HR30 series, a push-pull locking, IP67/IP68 sealed connector family aimed at industrial, marine, and medical equipment where dust and water ingress are the primary failure modes. The keyed orientation prevents mis-mating with the wrong receptacle, and the integrated backshell with strain relief — accepting cables from 0.138" to 0.169" (3.50 mm to 4.30 mm) — eliminates the need to source a separate backshell for most harness builds.
IP67/IP68 — the rating that decides the application
The IP67/IP68 rating means the connector is dust-tight and waterproof per the manufacturer's test conditions.
2 A per contact — what the current rating actually means
Rated 2 A per contact, the HR30-6PA-6S(71) is a signal-level or low-power interconnect, not a main power feed. The 6 (Power) position designation in the spec indicates the contact arrangement is sized for power circuits, but the 2 A limit per pin means each circuit should be treated as a signal or control line — think sensor power, discrete I/O, or low-current DC distribution.
100 VAC / 140 VDC — the dual voltage rating matters for signal integrity
The voltage rating is 100 VAC and 140 VDC, reflecting the creepage and clearance design of the PBT shell and PPS insert.
Solder cup termination — field-termination friendly
Termination is solder cup — each contact has a cup that accepts a tinned wire end, soldered in place. This is the standard field-termination method for circular connectors in low-to-medium volume production or repair work. No crimp tool or die set is required, which simplifies field replacement and prototyping. The integrated backshell and strain relief clamp onto the cable jacket, so the solder joints are not load-bearing.