LP20 3 Pin Metal Plastic Waterproof Circular Connector Series

LP20 3 Pin Metal Plastic Waterproof Circular Connector Series——Built for Mixed Power and Signal Runs

When you're routing a main power line plus a couple of control signals, you don't want to run three separate cables. The LP20 3 Pin Metal Plastic Waterproof Circular Connector Series from Cablein Technology solves this. It features a hybrid metal-and-plastic shell with thick solder cups rated for 20A and 500V. The series includes inline, panel, and flange mounts, so you can fit it to almost any enclosure.

Why This LP20 3 Pin Metal Plastic Waterproof Circular Connector Series Works

3 Pins for Power and Control
Three pins give you the sweet spot: one heavy power line and two signal wires. The thick solder cups easily swallow 2.5 to 4 mm² wire for the power side, while handling thinner signal wires with ease. No more cable clutter.

Metal Core, Plastic Shell
The internal structure is metal for strength and heat dissipation. The outer housing is plastic for electrical insulation and rust prevention. You get the durability of metal without the weight and corrosion issues.

IP67 Sealing
The O-ring seals tight around standard 8 to 12mm cable jackets. Rated IP67, it handles rain, mud, and temporary splashes without breaking a sweat. Just crank the threaded ring down hard and the contacts stay dry.

Three Mounting Options in One Series
You don't need to guess your setup. The series includes the inline connector for cable-to-cable runs, the panel socket for cutting into an enclosure, and the flange socket for bolting down to a machine chassis.

Technical Specifications

Where This 3-Pin Series Earns Its Keep

Electric Trolling Motors
Fishing boats use heavy trolling motors that pull serious amps. Standard plugs get hot and melt. The LP20 3 Pin Metal Plastic Waterproof Circular Connector Series has thick solder cups that take 12 AWG wire, keeping the resistance low and the connection cool all day.

Battery Bank Interconnects
When you're wiring up a bank of batteries in an RV or solar setup, you need a plug that won't arc. The metal core takes the load, and with the flange mount you can bolt the socket right to the battery box wall so the cables don't yank loose.

Industrial Welding Equipment
Welding rigs get dragged through the dirt and vibrated to hell. Cheap plastic connectors shatter. The metal-and-plastic hybrid shell on this kit takes the abuse, and the IP67 seal keeps the grinding dust and rain out of the contacts.

Heavy-Duty Winches
Running a winch means pulling heavy gauge wire through the bumper or grille. Just bolt the panel socket to the frame, solder up your thick power cables, and call it done. It'll take a 20A surge all day without even flinching.

Field Wiring Tips for High Amps

Don't Skimp on the Solder
For 12 AWG wire, you need a hot iron. A small 30W pencil won't cut it. Use a 60W iron or a butane torch. Heat the cup, feed the solder, and let it flow. You want a shiny, smooth joint, not a cold, lumpy blob.

Strip Length Matters
Don't strip too much wire. If bare copper sticks out past the solder cup, it can touch the other pin or the metal shell. That's a dead short. Strip just enough to fit inside the cup.

Use the Right Gland
The kit comes with a gland nut for 8 to 12mm cable jackets. If you're using a thin cable, the gland won't seal. You'll get water inside. Make sure your outer cable jacket fits that range.

How Cablein Technology Builds These

We don't just guess at high-current ratings. Every LP20 3 Pin Metal Plastic Waterproof Circular Connector Series is tested for the full 20A load and 2500V withstand voltage before it ships. We're ISO 9001:2015 certified. We pull-test the solder joints to ensure they won't snap under heavy cable weight, and we pressure-test the O-ring to guarantee the IP67 seal. If it doesn't pass, it doesn't leave the factory.

Field Questions from Our Customers

Q: What's the largest wire this will take?
A: You can fit 2.5 to 4 mm² (14 to 12 AWG) wire into the solder cups. If your wire is much thinner, it's going to be a loose fit. You want the wire to fill the cup.

Q: How do I keep the heavy cable from ripping the plug off?
A: That's why the series includes the flange socket. Bolt it to a solid surface. The gland nut at the back of the plug also grips the 8-12mm jacket tight so the cable doesn't pull on the solder joints.

Q: Will 20A melt the plastic housing?
A: No. The current flows through the heavy metal contacts inside, not the plastic. The metal coupling ring also helps dissipate heat. As long as you use the right wire gauge, it runs cool.

Q: Are the pins plated?
A: Yes, the metal contacts are plated to resist corrosion and maintain good conductivity over time.

Get Your Connector Series

Cablein Technology has been building rugged waterproof connectors for industrial clients for years. If you're tired of replacing melted or corroded power connectors, we can help. Email us at nick@cableinco.com with your wire size and how many kits you need. Let us know you're looking for the LP20 3 Pin Metal Plastic Waterproof Circular Connector Series, and we'll get you a quote.