Stop Losing Data and Dealing with Electrical Noise
Do you have machines that keep stopping because of bad cables? Do you see errors on your screens when motors start running? It is very frustrating when your control systems fail. Electrical noise is everywhere. Motors, lights, and other machines create waves that mess up your data signals. If your cable is not shielded well, these waves get inside the wire. They corrupt your data. They cause downtime. They cost you money.You need a cable that fights back. You need a cable built for tough places. The Belden 9813 cable is not just a wire. It is a shield for your data. It keeps your signals clean. It works when other cables fail. This is the imported from the USA solution for serious signal extension and data transmission.
What Is This 26-Core 28 AWG Belden 9813 Cable?
This is a high-quality multi-pair cable made by Belden in the USA. It has 26 cores inside. That means it has 13 pairs of wires. Each pair is twisted together. This twisting is very important. It helps cancel out noise from the outside.The wire size is 28 AWG. This is about 0.1 square mm. It is stranded wire. This means it is made of many tiny wires twisted together. It is not one solid piece of metal. This makes the cable very flexible. You can move it around. You can put it in robot arms or moving parts. It will not break easily.The conductors are made of tinned copper. Copper is the best metal for carrying electricity. The tin coating stops the copper from getting rusty. It stops corrosion. This makes the cable last a long time, even in wet or dirty places.
Technical Specs That Matter to You
Here are the real numbers for this cable. We do not use confusing words. We tell you exactly what it does.Cable Type: 9813 Multi-Conductor, Low Capacitance Computer Cable.Application: EIA RS-232, RS-422, Data Transmission, Instrumentation.Number of Conductors: 26 (13 Pairs).Wire Gauge: 28 AWG (Stranded, 7×36 stranding).Conductor Material: Tinned Copper (Bare copper coated in tin).Insulation Material: Polypropylene (PP).Shielding: 100% Aluminum/Polyester Foil + Tinned Copper Braid (90% coverage).Jacket Material: PVC (Polyvinyl Chloride).Jacket Color: Chrome (Silver) or Black (depending on put-up).Outer Diameter: 0.336 inches (8.53 mm).Weight: About 62 lbs per 1000 feet.Voltage Rating: 30 Volts RMS (UL AWM Style 2960).Temperature Range: Install above 0°C. Operate from -15°C to 65°C.Electrical Performance:
- Impedance: 100 Ohms (Nominal) at 1 MHz to 6 MHz. This is perfect for data lines.
- Capacitance: 16.5 pF/ft (Conductor to Conductor). This is very low. Low capacitance means the signal stays strong over long distances.
- Resistance: 64.9 Ohms per 1000 feet at 20°C.
- Velocity of Propagation: 66%. This is how fast the signal travels down the wire.
- Shield Resistance: 2.2 Ohms per 1000 feet. Very low resistance means the shield works great.
Why The “Twisted Pair” Design Is So Important
You might ask, why are the wires twisted? Imagine two wires running parallel. Electrical noise hits both wires at the same time. It adds garbage data to both. If the receiver only looks at the difference between the two wires, the noise cancels out. This is called “Common Mode Rejection.”But for this to work, the wires must be twisted. The twisting ensures that both wires are equally exposed to the noise source over the length of the cable. The Belden 9813 does this perfectly. Each pair has a specific twist rate (lay length). This is engineered to fight specific frequencies of noise.This is why this cable is great for RS-422. RS-422 uses differential signaling. It needs a balanced pair. The 9813 provides that balance better than cheap flat cables or unshielded round cables.
The Double Shield: Foil and Braid
Noise is the enemy of data. The 9813 uses a two-layer defense system.Layer 1: The Foil (Beldfoil®)Inside the jacket, there is a layer of aluminum foil. It covers 100% of the pairs. It wraps around them completely. This foil stops high-frequency noise. It stops radio waves (RFI). It stops electromagnetic waves (EMI).Layer 2: The BraidOver the foil, there is a woven mesh of tinned copper wires. This is the braid. It covers 90% of the cable. The braid is tough. It stops low-frequency noise. It also provides a path to ground. If a big surge of electricity hits the shield, the braid sends it safely to the ground wire instead of letting it burn the delicate data wires inside.The Drain WireThere is also a 28 AWG stranded tinned copper drain wire. This wire touches the shield. It makes it very easy for you to connect the shield to the ground screw on your machine. You do not have to strip the jacket and find the braid. Just use the drain wire. It saves you time during installation.
Where Can You Use This Cable?
This cable is not for your home TV. It is for industry. It is for places where reliability is not optional.1. Industrial Automation and RoboticsFactory floors are noisy. Welding machines, VFDs (Variable Frequency Drives), and servo motors create massive electrical fields. This cable is rated for industrial use. It connects PLCs (Programmable Logic Controllers) to I/O modules. It connects drives to motors. It works in robot arms that move all day. The “high flex” design (stranded conductors) means it can handle torsion and bending without the copper breaking.2. Serial Communications (RS-232 and RS-422)Old standards do not die; they just get more reliable. Many CNC machines, barcode scanners, and industrial printers still use Serial ports. The 9813 is the gold standard for extending these signals. You can run this cable up to 4000 feet (1200 meters) for RS-422 and still get a clean signal. For RS-232, it handles the distance well too, preventing data loss.3. Instrumentation and Control PanelsIf you are building a control panel, you need clean wires. This cable is great for 4-20mA current loops. It is great for 0-10V analog signals. Because the capacitance is low, the signal does not distort. Your sensors will read accurately. Your valves will open to the right position.4. Audio and Intercom SystemsBelieve it or not, this cable works for audio too. It is a “low capacitance” cable. In audio, high capacitance makes the sound muddy. It kills the high notes (treble). Because the 9813 has low capacitance, it keeps audio crisp. It is great for long-run intercoms, paging systems, or line-level audio in large buildings.5. Security and CCTVYou can use this for PTZ (Pan-Tilt-Zoom) camera control. These cameras need data to move and power to run. The pairs can carry the data signals while other pairs carry low voltage power.
Jacket Material: PVC vs. Other Options
The standard jacket is PVC. PVC is tough. It resists oil. It resists sunlight (UV). It resists abrasion. If you drag this cable through a metal conduit, the PVC jacket protects the insulation inside.However, if you need something special, we can discuss other jackets.
- LSZH (Low Smoke Zero Halogen): If you need to run cable in air handling spaces (plenum) or public buildings where fire safety is strict. LSZH does not release toxic smoke when burned.
- PE (Polyethylene): If you are burying the cable directly in the ground (Direct Burial). PE is waterproof and resists chemicals in the soil.
For most indoor and outdoor industrial use, the standard PVC jacket is perfect. It is flexible enough to pull through pipes but tough enough to sit on a tray.
Why Buy “Imported from the USA” Belden?
You can buy cheap cable from anywhere. But cheap cable uses cheap materials.
- Copper Clad Aluminum (CCA): Some sellers use aluminum wires coated in a tiny bit of copper. This breaks easily. It has high resistance. It corrodes fast. Our Belden cable uses real tinned copper.
- Bad Shielding: Cheap cables might have a “foil” that is just painted plastic. It does not stop noise. The Belden 9813 uses real metal foil and real copper braid.
- Fake Specs: They say “28 AWG” but the wire is actually 30 AWG (thinner). This causes voltage drop. Our cable meets the exact AWG standards.
Belden is an American company with a huge reputation. They test every batch. When you buy Belden 9813, you are buying peace of mind. You know it will work. You know it meets UL standards. You know it meets RoHS standards for environmental safety.
Installation Tips for Best Performance
To get the best out of this 26-core cable, follow these simple rules.
- Ground the Shield: You must connect the drain wire to a good earth ground. If you do not ground the shield, it acts like an antenna and makes noise worse. Connect it at one end only (usually the source end) to avoid ground loops, unless you are doing very low frequency signals.
- Don’t Kink It: Even though it is flexible, do not bend it sharper than 10 times its diameter. That is about 3.3 inches. If you kink it, the impedance changes, and you get signal reflections.
- Separate from Power: Do not run this data cable in the same pipe as 110V or 220V power cables. If you must cross them, cross at a 90-degree angle. This minimizes interference.
- Use the Right Connectors: For 28 AWG stranded wire, use ferrules or crimp pins that are designed for stranded wire. Do not just twist the strands and screw them down; they will fray and cause shorts.
Packaging and Shipping
We sell this cable by the foot or by the reel.
- Sample Put-ups: You can buy 100ft or 500ft coils to test.
- Full Reels: Standard reels are 1000ft (305 meters) or 500ft.
- Wooden Drums: For bulk orders (like 5000 meters+), we can ship on wooden drums to protect the cable during long ocean freight.
We ship from China production bases or USA warehouses depending on your location. If you are in the USA, we can ship domestic to save you time and freight costs. We use strong cartons or pallets. The cable is not pulled tight; it is coiled loosely so it does not stretch.
Compliance and Safety
This cable is safe. It meets strict rules.
- UL Listed: It meets UL 1685 FT4 and UL AWM Style 2960. This is for vertical tray cables in buildings.
- RoHS: It does not have lead or mercury. It is safe for the environment.
- CE: It meets European safety standards.
- CPR: It is rated for construction products regulation in the EU.
If you have a project that needs inspection, we can provide the test reports. We can show you the UL file number. We can prove this is the real deal.
Get Your Quote Today
You need a reliable partner for your cable supply. You need a cable that stops the headaches. The Belden 9813 26-core shielded cable is the answer. It handles the noise. It handles the movement. It handles the distance.We have stock ready. We can cut it to your exact length. We can put your company labels on the boxes. We can ship it to your door in 7 days or less.Do not wait for your machines to break. Do not lose money on rework. Buy the best cable the first time.Send us an inquiry right now. Tell us how many feet you need. Tell us where you are shipping. We will send you a price that beats the big distributors. Let’s talk about your project. Click the button below or email us. We are ready to help.