4-Core IP68 Industrial Connector with 15A Screw Terminals

LD20/SP20 Industrial Flange Connector Dimensions and Specs

Why the 4-Core, 15A Connector Is a Factory Floor Staple

Industrial sensors and small actuators rarely need a heavy-duty power connector. They need a compact, reliable interface that carries both power and signal in one plug, survives dust and washdowns, and stays secure under vibration. That is exactly the niche this 4-core connector fills: a 15A rating covers most sensor and light actuator loads, while the IP68 enclosure keeps contaminants out of the contact area.

What the 15A Rating Actually Covers

The 15A current rating applies to the connector's continuous carrying capacity under the stated test conditions. For typical factory sensor circuits—24V DC proximity switches, photoelectric sensors, or small solenoid valves—this is generous headroom. The 4-core layout lets you run power and signal in the same housing, which simplifies cable routing and reduces the number of bulkhead pass-throughs on a control panel.

• Power + signal in one connector: two cores for supply, two for the signal loop, or three plus a shield depending on your cable.
• 15A continuous rating: suitable for most sensor and light actuator loads; always derate for high ambient temperatures.
• IP68 protection: rated against dust ingress and continuous immersion, which covers washdown and humid production areas.

Screw Terminals: Field-Friendly and Secure

Screw terminals are the right choice here because they give you a visible, verifiable connection. You can see the conductor seated under the screw, feel the torque when it is tight, and re-terminate the connector if a cable is damaged. That matters on a production line where downtime is measured in minutes. Unlike crimp-only contacts, screw terminals do not require a special tool on the floor—just a standard screwdriver.

Where This Connector Fits—and Where It Does Not

This is a workhorse for fixed or semi-fixed installations: sensor boxes, junction boxes, conveyor controls, and light industrial machinery. It is not designed for repeated high-cycle mating (hundreds of plug/unplug operations per day) or for high-flex robotic applications. If your line runs 24 hours with frequent connector changes, consider a connector rated for more mating cycles. For most factory sensor applications, however, this 4-core IP68 connector delivers the durability and affordability that maintenance teams appreciate.

Next Step: Match the Connector to Your Sensor Layout

Before ordering, confirm your sensor's current draw, cable diameter, and whether you need a straight or right-angle version. If you are standardizing across multiple machine types, check the pinout against your existing sensor cables to avoid re-termination on the floor. For a broader view of waterproof connector options, see the waterproof connector range. If you are planning a new machine build and need to confirm the interface, send your sensor datasheet and cable specification to our team for a quick compatibility check.