LP16 3-Pin Metal Circular Waterproof Connector

LP16 3-Pin Metal Circular Waterproof Connector – All-Metal 10A Connection with IP68 Sealing

Three pins. All-metal shell. Ten amps per contact. The LP16 3-Pin Metal Circular waterproof connector is the three-pole version of our compact 16mm all-metal line — the one you pick when you need a ground path, not just positive and negative. Zinc alloy housing takes impacts that crack plastic. Gold-plated contacts stay stable in humid or salty air. IP68 sealing keeps water out at 2 meters for 24 hours.

LP16 3-Pin Metal Circular Waterproof Connector – Why Three Pins, Why All-Metal

Two-pin connectors work fine for simple DC runs. But add a ground path, or split a signal line from a power line, and you need a third pin. The LP16 3-Pin Metal Circular Waterproof Connector handles that without jumping up to a bigger shell size. Same 16mm footprint as our 2-pin, one extra contact — 1 to 1.5mm² (16 AWG) cable, 7–9mm outer diameter.

The all-metal housing is a deliberate pick. A plastic-shell 16mm connector cracks if it gets dropped on concrete. The zinc alloy version takes the impact and keeps sealing. The trade-off is a few grams of weight, which at 16mm is a small tax. Solder terminals hold each line tight, and the keyway keeps the three pins going in the same way every time.

Sealed Where Small Metal Connectors Get Used

IP68 at 2 meters for 24 hours. Every batch gets tested, not every tenth one. That matters because this connector ends up on gear that's genuinely exposed — outdoor camera housings with a grounded chassis, industrial sensor junction boxes, marine instruments, portable test equipment that gets dropped on deck. Places where a plastic connector would crack after a season and a metal one keeps going.

The silicone seal handles the wet side. The metal shell handles the mechanical side. Three poles at 10A each gives you enough headroom for a small motor, a sensor cluster, or a signal-plus-ground run.

Technical Specifications at a Glance

Where This 3-Pin Connector Actually Gets Used

Three-line runs in wet environments where the shell needs to survive impacts. Outdoor camera housings with grounded chassis. Industrial sensor junction boxes. Marine instruments on deck. Portable test equipment that gets dropped. Agricultural equipment controls. Anywhere you've got three lines going into small gear that gets banged around and wet — and that's where the LP16 3-Pin Metal Circular Waterproof Connector ends up.

Every batch gets a dielectric test and a waterproof check. Solder joints get pull-tested, not just eyeballed. It costs us time. It saves you callbacks.

Quality Control and Certifications

The LP16 series carries TUV, CE, and RoHS. We run ISO9001:2015, so material sourcing is consistent and production records are traceable. And the quality system actually gets audited — not just claimed.

Quick Questions We Get Asked

Q: Why three pins instead of two?

A: Ground path, or signal-plus-power in one connector. If you just need positive and negative, the 2-pin LP16 is lighter and cheaper. Add the third pin when you need it — not before.

Q: What cable size does it take?

A: 1 to 1.5mm² (16 AWG) with a 7 to 9mm outer diameter. Light power class.

Q: Can it stay submerged?

A: Yes. IP68 covers continuous immersion. We test at 2 meters for 24 hours.

Q: Is there a panel-mount version?

A: Yes. Same LP16 series, same 3-pin layout — just a flange or panel cutout instead of an inline shell. Talk to us if you need it.

Want to Know More?

For specs, custom pin counts, or samples of the LP16 3-Pin Metal Circular Waterproof Connector, email nick@cableinco.com. Tell us your cable size and layout — we'll confirm the build.