German-Imported HELUKABEL 4x2x0.25mm² Individually Shielded 8-Core Control Cable – LiYCY-CY / ROBOFLEX PUR – EMI Protection for Robotics & Automation

Stop Losing Money on Signal Errors and Cable Failures

You know the feeling. Your production line stops. The screens go black. The sensors send garbage data. You check the control cabinet, and there it is—the cable. It looks fine on the outside, but inside, the signals are fighting each other. Electromagnetic interference (EMI) is killing your efficiency. Cheap cables crack when they move. They get brittle in the cold or melt in the heat. If you are using standard PVC cables in a high-tech factory, you are asking for trouble.You need a cable that doesn’t just carry data. You need a cable that protects it. You need the German-imported HELUKABEL individually shielded 4×2×0.25 square millimeter connecting cable. This isn’t just a wire. It is a precision tool built for the real world. It solves the three biggest headaches in industrial automation: signal noise, mechanical stress, and environmental damage. Whether you are building a robot arm, a conveyor belt system, or a wind turbine control panel, this 8-core shielded cable is the heavy-duty solution you have been looking for.

What Exactly Is This Cable? (The Technical Breakdown)

Let’s cut through the jargon. This is a flexible control and data cable designed for dynamic applications. The “4x2x0.25mm²” part tells you the size. You have 4 pairs of wires. Each wire has a cross-section of 0.25 square millimeters. That is the sweet spot for instrumentation and bus systems—strong enough to carry the signal, thin enough to stay flexible.But the magic is in the shielding. We are talking about an individually shielded construction. In many cheap cables, you get one big shield around everything. That is okay for static use. But in moving machinery, that single shield creates “crosstalk.” The signals from pair A leak into pair B. With HELUKABEL’s individual shielding, every single pair has its own aluminum foil or copper braid shield. This keeps your data clean. It ensures that the signal from your sensor goes exactly where it needs to go, without noise.The “8-core” count means you have 8 individual conductors. This is perfect for complex communication protocols. You can use it for PROFINET, EtherCAT, CAN-bus, or simple analog control loops. The core material is high-purity copper (Class 5 fine-stranded). This means the wire is soft. It bends easily. It doesn’t snap when you flex it millions of times in a drag chain.

Material Matters: Why PVC and PUR Make the Difference

You have two main options for the outer sheath, and the choice changes everything.

The Standard Champion: PVC (LiYCY-CY)

If you are working indoors, in dry or moist rooms, the PVC version (often called LiYCY-CY or F-CY-JZ) is a workhorse. It is cost-effective and very flexible. The outer sheath is usually black (RAL 9005) and resistant to ultraviolet (UV) radiation. This is crucial if you have cables running near windows or in outdoor enclosures. The PVC compound used by HELUKABEL is special—it resists oils and coolants. You will find this cable in tool machines, assembly lines, and steel production plants. It handles temperatures from roughly -40°C to +80°C. It is tough, but it is not invincible against aggressive chemicals.

The Heavy Hitter: PUR (ROBOFLEX / TORSION)

If your application is rough, you need PUR (Polyurethane). Look for the HELUDATA ROBOFLEX series. PUR is the king of drag chains and robotics. Why? Because it is oil-resistant, halogen-free, and incredibly tough. We are talking about resistance to lye, microbes, and coolants. If you have a robotic arm that twists and turns all day, PUR is the only choice. It has a memory. It returns to its original shape. The temperature range is usually -30°C to +90°C. For high-flex applications, the minimum bending radius is usually 7.5 times the outer diameter. For a cable this size (around 8mm diameter), that means it can bend into a tight space without kinking.

Technical Specifications at a Glance

Here is the hard data you need for your engineering specs. We have pulled this from the latest HELUKABEL datasheets to save you time.

Key Electrical Data:The loop resistance is low (around 140-150 Ohm/km depending on exact spec), which means you don’t lose voltage over long runs. The mutual capacitance is kept under 100 pF/m. This is vital for high-speed data. If the capacitance is too high, your data gets slow or corrupted. HELUKABEL engineers the insulation (PE or PVC foam-skin) to keep these numbers low.

Where Does This Cable Shine? (Real-World Use Cases)

You might be thinking, “This is just a cable.” But in the industry, the right cable defines the machine’s capability.

Robotics and Drag Chains

This is the #1 use case. Industrial robots move fast. They accelerate and decelerate constantly. A standard cable will break in weeks. The HELUKABEL 4x2x0.25mm² with PUR jacket is designed for “torsion-capable” use. It can handle strokes of up to 5 meters and accelerations of 5 m/s² or more. It is used in the “energy chain” (drag chain) of robotic arms to supply power and data to the gripper or tool changer.

Wind Energy

Wind turbines are harsh environments. They vibrate. They get hot. They get cold. Inside the nacelle, you need cables that connect the control systems to the pitch and yaw drives. HELUKABEL supplies these for the wind industry. The UV-resistant black sheath is perfect for the outdoor elements. The individual shielding prevents the sensitive control signals from being interfered with by the high-power generator cables running right next to them.

Factory Automation & Conveyor Belts

In a bottling plant or a car factory, conveyor belts run 24/7. If a cable fails, the whole line stops. That costs thousands of dollars per minute. Using this shielded 8-core cable for sensors and PLC connections ensures reliability. It is also used in tool machines (CNC lathes, mills). The oil resistance protects it from the metalworking fluids splashing around.

Building Technology and BUS Systems

For smart buildings, you need bus cables (like KNX or BACnet). The 4-pair structure is perfect for daisy-chaining devices. The halogen-free versions are required by fire codes in public buildings because they don’t emit toxic smoke if they burn.

Why Buy German Quality? (It’s Not Just a Label)

You can buy cheaper cables from other markets. But “cheap” often means “inconsistent.” One batch might be good. The next batch might have a bad batch of copper or thin insulation.HELUKABEL is a German manufacturer. They have been doing this for decades. When you buy from them, you are buying consistency.

• Testing: Every cable type is tested in their own test towers. They simulate years of movement in a lab before the cable ever reaches your factory.
• Standards: They conform to the Low-Voltage Directive 2014/35/EU and strict DIN VDE standards.
• Traceability: The cables have meter markings. You know exactly how much you have used.
• Support: They offer pre-assembled solutions. If you don’t want to crimp connectors yourself, they can supply plug-and-play cables.

The “German-import” tag means the core technology and quality control happen in Germany. It ensures that the copper purity is high, the shielding coverage is consistent (usually >85% coverage), and the extrusion of the sheath is perfect (no bumps or thin spots).

Installation Tips to Make It Last Forever

Even the best cable will fail if installed wrong. Here is how to get the most out of your HELUKABEL purchase:

1. Respect the Bending Radius: Do not kink the cable. If the minimum bend is 60mm (7.5x8mm), don’t bend it to 30mm. It will break the conductors or the shield.
2. Strain Relief: Do not pull the cable by the wire itself. Use cable glands or strain relief clamps. The tensile strength is there for installation, but not for constant hanging weight.
3. Grounding: Because it is shielded, you MUST ground the shield correctly. Usually, this is done at one end (the control cabinet end) to avoid ground loops. If you don’t ground it, the shield is useless.
4. Drag Chain Length: In a drag chain, the cable should be slightly longer than the chain length (about 10% slack) so it doesn’t get pulled tight at full extension.

Frequently Asked Questions About This Product

Is this cable suitable for direct burial?Generally, no. The standard PVC and PUR versions are not armored. For direct burial, you need a cable with an outer diameter of at least 18mm-20mm and special armor. However, this cable is perfect for underground conduits or wet rooms.Can I use this for power transmission?No. This is a control/signal cable (300V/500V). It is not designed for high power currents (like 400V motor supply). Use specific power cables for that. Mixing them can cause interference.What is the difference between LiYCY and ROBOFLEX?LiYCY is the standard PVC control cable. ROBOFLEX is the high-end PUR version for robotics. ROBOFLEX is more expensive but handles oil, extreme flexing, and rough mechanical stress much better.How do I identify the cores?The cores are color-coded according to DIN VDE 0293-334. You will see standard colors like Blue, Brown, Black, Grey, Pink, etc., with white number printing. The shielding wires usually have a green/yellow stripe for grounding.

Get Your Quote Today

You have seen the specs. You understand the application. Now it is time to secure your supply chain. Don’t risk your production line with generic cables that fail when the pressure is on. Invest in the HELUKABEL 4x2x0.25mm² individually shielded 8-core cable. It is the industry standard for a reason.We are a professional foreign trade cable enterprise. We can source this directly from the German factory. We handle the import logistics so you don’t have to. Whether you need 100 meters for a prototype or 50 kilometers for a new plant, we can supply it. We also offer pre-assembly services if you need connectors attached.Stop guessing. Start building with confidence.Contact us right now for a competitive quotation. Send us your required length, sheath material (PVC or PUR), and connector requirements. Our engineering team is ready to help you specify the exact part number (like 11022466 or 21079 series) to fit your machine perfectly.Click “Inquire Now” or email us for the best price on German-imported HELUKABEL shielded control cables.