Tired of cables that are too thick, break easily, or cause signal chaos?
You are not alone. Many factory managers and electrical engineers face the same headaches every day. You buy cables that take up too much space in the control cabinet. The wires crack when you move them just a little bit. Or worse, the signal gets messy because of interference. You need a wire that works hard, fits in tight spots, and does not cost a fortune. This is why we bring you the German imported UNITRONIC® LiYY 3×0.34 mm² unshielded signal and data transmission cable. It is not just a wire. It is a reliable partner for your machines. It solves the space problem. It fixes the flexibility issue. And it brings German quality to your factory floor at a fair price.
What exactly is this LiYY 3×0.34 cable?
Let us keep it simple. This is a multi-core control cable made in Germany. It has 3 cores inside. Each core has a cross-section of 0.34 mm². The manufacturer part number is 0028403. It is a classic LiYY cable based on the VDE 0812 standard. This means it is built for low-frequency signals. You use it for analog and digital data. It is unshielded, so it is best for places without heavy electric noise. If you need a cheap but good wire for your electronics, this is the one. It uses PVC for both the insulation and the outer sheath. The color is grey, like pebble grey (RAL 7032). It is small, tough, and made for indoor use.
Let’s look at the technical numbers (The boring but important part)
You need to know if it fits your machine. Here are the real specs for this 3 core 0.34mm cable:
- Conductor Material: Bare copper. It is not coated. This gives the best conductivity.
- Stranding: The copper is not one solid stick. It is made of 7 thin wires twisted together (7×0.25mm). This makes it flexible. We call this “Class 2” stranding.
- Insulation: PVC (Polyvinyl Chloride). It is standard and reliable.
- Sheath: PVC. Grey color.
- Outer Diameter: About 4.4 mm. This is small. It saves space in your cable ducts.
- Weight: Around 31 kg per km. The copper inside is about 9.9 kg per km.
- Voltage: Rated for 300V to 500V. The test voltage is 2000V.
- Capacitance: Approx 120 nF/km.
- Inductance: Approx 0.65 mH/km.
These numbers show it is a standard industrial wire. It is not for high power. It is for signals and control logic.
How much can you bend it? (Bending Radius)
This is a big pain point for many buyers. Cables get crushed in drag chains. The LiYY 3×0.34 has rules for bending. You must follow them or the wire will break.
- For fixed installation: You can bend it to 4 times the outer diameter. That is about 17.6 mm. This is for wires hidden inside a wall or a fixed panel.
- For flexible use: You need a bigger curve. It is 10 times the diameter. That is about 44 mm. Also, some data says 7.5 times for fixed and 10-15 times for moving. Be careful. Do not kink it sharp.
- Temperature limits: If it is moving, keep it between -5°C and +70°C. If it is stuck in a wall, it can handle -40°C to +80°C.
So, it is good for occasional moving. But do not put it in a high-speed moving drag chain unless you are very careful. For heavy drag chain use, you should look at the UNITRONIC® FD or similar high-flex cables. But for normal use, this is tough enough.
Where should you use this cable? (Real-world Scenarios)
You might ask, “What machines need this German imported data cable?” The answer is: almost everything in a modern factory or office.
- Computer Systems and Servers: It connects the motherboard to the hard drive or the control logic.
- Office Machines: Think of printers, scanners, and copiers. The internal wiring often uses LiYY.
- Electronic Scales and Balances: The sensor needs a stable signal. This cable provides it.
- Control Cabinets: It wires the PLC (Programmable Logic Controller) to the buttons and sensors.
- Damp or Dry Rooms: It works in humid places. But do not put it directly in the ground or in UV sunlight. It is not armored.
It is also flame-retardant according to IEC 60332-1-2. If a fire starts, it does not spread the flame easily. This is a must-have for building safety.
Why choose the LiYY over other generic cables?
You can buy cheap local cable. But here is why the LAPP 0028403 or equivalent is better:
- Consistent Quality: German factories check every meter. The copper is pure. The PVC is the right mix. It does not get brittle fast.
- Color Code: It uses DIN 47100 color coding. No color repetition. This makes it easy for your electricians to wire it up without mistakes.
- Small Size: With 3 cores, the diameter is only 4.4mm. Other brands might be 5mm or 6mm. In a crowded panel, 1mm makes a huge difference.
- Chemical Resistance: PVC handles oil and acids okay for short times. It is great for general industrial environments.
It is a “no-frills” cable. It does not have a shield (braiding). This makes it cheaper and lighter. If you are in a place with big motors causing noise, you might need a shielded cable like LiYCY. But for 90% of indoor jobs, this unshielded 3 core cable is perfect.
How to order and what about the price?
We know you care about the cost. As a trading company, you need a good margin. We offer this cable in various lengths. You can buy it in rolls of 100 meters (like Helukabel does) or in bigger drums. We can also cut it to length if needed.The LAPP 0028403 is a standard stock item. We can ship it fast. If you need a specific color or a different core count (like 2, 4, or 5 cores), we can source that too. We have access to the full LAPP catalog and other German brands like Helukabel.The price depends on the quantity. The more you buy, the cheaper it gets. We offer discounts for bulk orders (pallet level). We also handle the logistics. You do not need to worry about the complex shipping rules for chemicals (PVC is a chemical product). We take care of it.
Ready to fix your cable problems?
Stop dealing with broken wires and signal errors. Upgrade to the German imported LiYY 3×0.34 mm² unshielded signal and data transmission cable. It is the industry standard for a reason. It is reliable, flexible, and safe.We have stock ready to go. Send us your inquiry today. Tell us the quantity you need. We will send you a competitive quote within 24 hours. Let us build a long-term business relationship. Click the “Get Quote” button or email us directly. Let’s get your machines running smoothly with the best wires from Germany.