German Imported ÖLFLEX® CLASSIC 115 CY 4G2.5 mm² Shielded Flexible Control Cable – 4 Core Copper Power Wire 300/500V

The headache of cheap cables: Why your machine keeps stopping

You know the feeling. You just fixed the production line. The new cable looked good on paper. But two days later, the machine throws an error. The sensor signal is jumping. The motor stutters. You check the wire, and it is cracked, or the shielding fell apart. Cheap cables cost you more than just the price of the wire. They cost you downtime. They cost you technician hours. They cost your reputation.In a factory, electricity is not just about power. It is about control. If you have electromagnetic noise from other motors, a cheap unshielded cable acts like an antenna. It picks up the noise. Your data gets corrupted. Your PLC loses connection with the drive. You need a cable that fights back. You need a cable that is tough, flexible, and built to German standards. You need a wire that does not quit when the environment gets tough.This is not just a wire. It is the nervous system of your equipment. If the nerves are weak, the body fails. Let us look at the solution that engineers trust for over 40 years.

What is the ÖLFLEX® CLASSIC 115 CY 4G2.5?

This is a German-engineered control cable. It is famous for a reason. The “ÖLFLEX” name means quality. The “CLASSIC 115 CY” part tells you exactly what it is built for. It is a flexible cable. It has a shield. It uses PVC insulation.The “4G2.5” is the size code. It means 4 cores. Each core is 2.5 square millimeters in size. This size is the sweet spot. It carries enough power for small motors and heavy sensors. But it is not too thick to bend around corners.This cable is a “power and control cable.” You can use it to send electricity to a motor. You can also use it to send signals to a computer. It does both jobs well. It is a multi-talented wire for complex jobs.

Technical Specs: The numbers that matter

You need hard data. Here is exactly what you get inside the jacket. We do not hide anything.

Voltage and Power Ratings

• Rated Voltage: U0/U is 300/500 Volts. This is the standard for industrial control. It handles the power spikes common in factories.
• Test Voltage: We test it at 4000 Volts between cores. We test it at 2000 Volts between the core and the shield. It is built to handle surges without failing.

Conductor and Core Details

• Number of Cores: 4 Cores.
• Conductor Material: Bare copper. Not copper-clad aluminum. Real copper for the best conductivity.
• Conductor Class: Class 5 according to IEC 60228. This means it is “fine-stranded.” It is made of many tiny wires twisted together. This makes it super flexible. It does not break if you bend it often.
• Cross-Section: 2.5 mm² per core.
• Resistance: At 20°C, the resistance is only 7.98 Ohms per kilometer. That is very low. Less resistance means less heat. Less heat means a longer life.
• Core Identification: The cores are black with white numbers printed on them. You can easily see which wire is which when you connect it. Number 1, 2, 3, 4. Simple.

Shielding and Armor

• Shielded: Yes. This is critical.
• Shield Type: Tinned copper braiding. The coverage is about 85%.
• Why Tinned? Tin does not rust. Copper can oxidize over time. Tin keeps the shield conductive for years. It blocks electromagnetic interference (EMI) perfectly.
• Armouring: No. This cable is not armored. It is for indoor or protected outdoor use. If you need armor for direct burial, look at our SWA cables. But for flexibility, no armor is better.

Sheath and Dimensions

• Outer Sheath Material: PVC (Polyvinyl Chloride).
• Sheath Color: Silver Grey (RAL 7001). It looks professional and hides dirt well.
• Outer Diameter: About 9.9 mm. It is slim enough to fit in tight cable chains.
• Weight: Approximately 188 kg per kilometer. Heavy copper content means high quality.
• Insulation Thickness: 0.8 mm on the conductor. 1.1 mm on the outer sheath.

Temperature and Bending

• Temperature Range (Fixed): -30°C to +70°C. It works in freezers and hot factories.
• Temperature Range (Moved): -5°C to +70°C.
• Bending Radius: This is important for installation.
  • When moving (flexing): 20 times the outer diameter (about 200 mm).
  • When fixed (static): 6 times the outer diameter (about 60 mm).
  • It bends easily. You do not need a big pull-box.

Where to use this cable: Real-world scenarios

You might ask, “Where exactly does this 4G2.5 wire fit?” Here are the top places we see it used.

Industrial Automation and Robotics

This is the home of the 115 CY. In a car factory or a bottling plant, robots move constantly. The cables in the robot arm twist and turn. A solid wire would snap in a week. This flexible Class 5 copper wire handles the torsion. The shield protects the sensitive encoder signals from the big servo motors nearby.

Machine Internal Wiring

Inside a CNC machine or a printing press, space is tight. You have 4 wires to manage. You need power for the controller (2.5 mm² is enough) and signals for the sensors. This cable does both. You run one cable instead of two. It saves space and money.

Damp and Wet Environments

The “CY” in the name hints at its chemical resistance. The PVC sheath resists acids and alkalis. It is also resistant to oils. If your factory floor gets washed down every night, or if there is coolant spray, this cable survives. It is rated for dry, damp, and wet rooms. It is not waterproof for deep submersion, but it handles humidity and splashes easily.

Construction and Building Services

You can use it for fixed wiring in partition walls or decorative linings. Because it is flame-retardant (IEC 60332-1-2), it is safe for use in public buildings. If there is a fire, it does not spread the flame. It self-extinguishes.

Wind Turbines

The product design mentions torsion applications in wind turbines. The nacelle moves. The cables inside need to flex without breaking. This German cable is tough enough for green energy applications.

Why choose German Quality? The “Invisible King”

You can buy cheaper cable from other places. But why take the risk? German cable manufacturing has strict standards.

Consistency

When you buy a 100-meter roll, the first meter is perfect. The last meter is perfect. The copper purity is consistent. The insulation thickness is exact. There are no weak spots.

Longevity

Cheap PVC gets brittle after a year. It cracks when you touch it. The ÖLFLEX PVC compound is mixed with the right plasticizers. It stays soft and flexible for 10 or 20 years. You install it once and forget about it.

Signal Integrity

The shield is not just a gimmick. It is a precise braid. It stops “crosstalk.” If you have data cables running next to power cables, the shield stops the power noise from corrupting the data. This means fewer glitches in your control system.

Safety

The flame-retardant properties are real. It does not just burn; it chars. This stops the fire from traveling along the cable tray. It buys time for your fire suppression system to kick in.

Comparison: 115 CY vs. Standard PVC Cable

Let’s be honest. How is this different from the generic cable you find on the market?

You pay more upfront for the German cable. But over 5 years, the German cable is cheaper because you do not have to replace it.

Installation Tips: Make it easy for your team

Installing this wire is simple if you follow basic rules.

1. Strip Length: Do not strip too much jacket. 10-15 mm is enough for the core insulation. Too much exposed braid can cause grounding issues.
2. Grounding: Connect the shield correctly. Usually, you ground it at one end only to avoid ground loops. Check your control system manual. But make sure the braid makes good contact with the gland or the backplane.
3. Bending: Do not kink it. Use a bending radius of at least 6 times the diameter (60 mm) when fixed. If it moves, give it 200 mm of space to curve.
4. Glands: Use PG20 or M20 cable glands. Make sure the gland has a strain relief clamp. This cable is flexible, but pulling on the wires directly will damage them.
5. Routing: You can route it in cable chains (energy chains). It is designed for this. Make sure it is not twisted inside the chain.

Packaging and Availability

We know you need it fast. We keep stock of the popular sizes.

• Packaging: It comes in rings, drums, or cut-to-length.
• Length: We can supply 100m, 500m, or 1000m drums.
• Custom Cuts: Need exactly 47 meters? We can cut it. You do not pay for waste.
• Shipping: We ship worldwide. The packaging is strong to prevent damage during transport.

Frequently Asked Questions (FAQ)

Q: Is this cable suitable for outdoor use in direct sunlight?A: It is UV resistant for a while, but for permanent direct sunlight, we recommend a UV-stable black sheath or conduit. The grey PVC can become brittle after long UV exposure.Q: Can I use this for audio speakers?A: Technically yes, but it is overkill and not designed for audio impedance. Use speaker wire for audio. Use this for control and power.Q: What is the difference between 115 CY and 110?A: The ÖLFLEX® CLASSIC 110 is the unshielded version. If you have no electromagnetic noise, use 110 to save money. If you have VFDs (Variable Frequency Drives) or motors nearby, you MUST use 115 CY (Shielded).Q: Can I bury this directly in the ground?A: No. It is not armored. You need to put it in a pipe or use an armored cable like SWA.Q: Does it come with a ground wire?A: Yes. The 4th core is often used as the protective earth (PE). It has a Green/Yellow stripe.

Conclusion: Stop gambling with your wiring

Your machines are expensive. Your production time is valuable. Do not ruin them with a cheap, stiff, unshielded wire that will crack in six months.You need a cable that bends without breaking. You need a shield that blocks noise. You need insulation that resists oil and chemicals. You need the reliability of German engineering.The ÖLFLEX® CLASSIC 115 CY 4G2.5 mm² is the industry standard for a reason. It is the “invisible king” of the factory floor. It works hard so you don’t have to worry.We are a factory and trader. We have the stock ready. We can offer you a price that beats the big distributors.Do not wait for the next breakdown.Send us an inquiry today. Tell us the length you need. Ask for a sample if you want to test the quality with your own hands. Let us send you a quotation within 24 hours. Upgrade your wiring to the best.Request a Quote Now for your 4-Core 2.5 sq mm Shielded Control Cable Project!