The Hirose LF07WBR-3P is a 3-position circular receptacle with male pins, part of the LF series designed for industrial and telecommunications equipment where a rugged, sealed interconnect is required. The bayonet lock (twist-to-lock, quarter-turn) provides a positive mechanical connection that resists vibration loosening, and the keyed orientation ensures the plug and receptacle align only one way — no mis-mating risk during field installation.
Sizing the Circuit and Power Path
Three positions at 5 A per contact gives this receptacle a total current capacity of 15 A across the three circuits, though in practice the derating curve for the PPS insert and the 85°C upper operating limit will govern the continuous load. The 5 A rating is per the manufacturer's spec at ambient — if the connector lives inside a sealed enclosure that runs warm, plan to derate. The voltage rating is 125 VAC or 175 VDC, which covers most 24 VDC industrial control and 120 VAC telecom auxiliary power rails. The gold-plated mating surface (8.00 µin) is a good match for the moderate mating-cycle count typical of field-serviceable equipment — it resists corrosion better than tin in the sealed environment without the cost of heavy gold.
The termination is solder cup — each of the three male pins has a cup that accepts a stripped wire end for soldering. This is a field-termination method, not a production crimp line; expect to solder each connection individually. The mounting feature is bulkhead with a rear-side nut, meaning the receptacle installs through a panel cutout and is secured from the inside. The shell size 7 determines the panel hole diameter — confirm the cutout dimension against the manufacturer's drawing before machining.