LP20 4-Pin Locking Circular Connector

LP20 4-Pin Locking Circular Connector – Screw-Terminal Connection for Power and Signal

We've been in the industrial connector business long enough to know which ones hold up and which ones just look the part. The LP20 4-Pin Locking Circular Connector is the first kind. Screw-lock terminals instead of crimped contacts — so you can wire it on site with a screwdriver, and it'll still take vibration, moisture, and repeated plugging without giving up. Four pins, so you're not stuck: power on two, signal on the other two, or however your setup needs it split.

LP20 4-Pin Locking Circular Connector – Built for Field Wiring Without the Toolbox

Here's the question we get from installers: why do so many circular connectors still need a crimping tool and a trained hand? The LP20 4-Pin Locking Circular Connector does away with all that. Strip the wire, push it in, tighten the screw. The clamp grips 2.5 to 4mm² cable tight, and the cable gland takes the pulling force so the contact point doesn't have to.

The 4-pin layout is a sweet spot for mixed applications. Two pins for power (up to 20A each at 500V), two for signal or control. Or four lines for three-phase plus ground. Whatever the configuration, the screw terminals stay put under vibration — we've tested them on motors and pumps, not just on a lab bench.

Why Screw-Lock Terminals Make Sense Outside the Factory

Crimped connections are great when you're at a bench with the right die and a calibrated tool. In the field, things are different. Someone forgets the crimper, the die wears out, or the tech hasn't been trained on that specific tool. Screw-lock terminals take that variable out of the equation. The connection quality depends on your hand and a screwdriver, nothing else.

The housing mixes metal and plastic — metal where the threads take the wear, plastic to keep the weight down. Sealing is rated IP67, so rain, washdown, and wet factory floors aren't a problem. Cable entry is 12mm, which fits power cable with an outer diameter between 8 and 12mm.

Technical Specifications at a Glance

Where This Connector Actually Gets Used

The LP20 4-pin shows up in applications where power and signal travel together. Industrial control panels. Motor junction boxes. Outdoor lighting arrays. Pump stations. Agricultural equipment. Stage and event power distribution. Anywhere you need four lines running through a connection that gets wired on site and then left alone for years.

We test every batch for dielectric strength and waterproof performance. The screw terminals get torque-checked, not just eyeballed. It takes longer, but it keeps field failures off your desk.

Quality Control and Certifications

The LP20 series carries TUV, CE, and RoHS certifications, and we operate under ISO9001:2015. Consistent material sourcing, traceable production records, and a quality system that gets audited — not just claimed.

Quick Questions We Get Asked

Q: Can I use the same 4-pin connector for power and signal at the same time?

A: Yep. Each contact handles up to 20A at 500V, so two pins for power and two for low-voltage signal works fine — or split them however your setup needs.

Q: What cable sizes does it accept?
A: 2.5 to 4mm² (14-12 AWG) with a cable outer diameter of 8-12mm. That covers most power-class field wiring.

Q: Do I need any special tools for this?

A: A screwdriver and a wire stripper — that's it. No crimping tool, no calibration, no training course.

Q: Is IP67 enough for outdoor use?
A: For most outdoor installations, yes. IP67 handles rain, splashing, and temporary immersion. For continuous submersion, our IP68-rated variants are available.

Ready to Get Started?

For specs, custom pin configurations, or samples of the LP20 4-Pin Locking Circular Connector, email nick@cableinco.com. Tell us your cable size and pin layout — we'll confirm the right build.