20-Position Shielded Circular Plug for Industrial Signal Runs
The Hirose HR25-9TP-20P(72) is a 20-position male plug from the HR25 series, a compact circular interconnect family built for industrial signal and low-power applications. It terminates via solder cups — a field-friendly method that doesn't require a crimp tool — and secures with a threaded coupling nut. The nickel-plated zinc alloy shell, combined with an integrated backshell, clamp, coupling nut, and strain relief, makes this a self-contained cable plug ready for shielded signal runs in control cabinets, sensors, or test equipment.
Rated for 1 A per Contact — Signal Duty, Not Bus Power
Each contact is rated 1 A at 30 VAC or 42 VDC. That puts this plug firmly in the signal-level interconnect class — think encoder feedback, serial data lines, or low-current sensor loops — not a power distribution path. The PPS insert holds the contacts in a keyed orientation, so the plug only mates one way with its matching receptacle.
Mates with the HR25-9TP-20S(73) Female Socket Plug
The direct mating half is the HR25-9TP-20S(73) — same shell size 9, same 20 positions, same keying, same threaded coupling. Both are shielded and carry gold-plated contacts. The female version uses the same solder cup termination and backshell kit, so a harness builder can assemble both ends with the same procedure. No adapter or shell-size step-up needed.
It is RoHS3 compliant. No official replacement or second-source cross-reference is on record — the closest functional alternative is the female counterpart HR25-9TP-20S(73) if you need the socket side.