Is Your Equipment Failing Because of a Bad Cable?
You have a high-tech machine. It works fast. It needs to move a lot. But the power cable keeps breaking. Or maybe the wire is too stiff to fit inside the arm. You spend hours fixing downtime. You lose money every minute the line stops. This is a common problem. Cheap cables crack after a few bends. They get hot. They cause signal noise that messes up your sensors. You need a wire that moves like the machine itself. You need the Fuji 3-core 0.3 square millimeter cable. It is built for movement. It is built to last. It solves the headache of constant replacement.
What Makes This 0.3mm² Cable Special?
This is not a standard wire you find at a local shop. This is a Japanese industrial standard product. The “0.3 square millimeter” size is very specific. It is small, but it carries power well for small devices. The key word here is “flexible.” We use pure copper strands that are very thin. They twist together easily. This means the cable can bend in small circles without breaking inside.The “3-core” design means you have three paths for electricity. Usually, one is for power, one for control signals, and one for grounding or another circuit. Having them in one jacket saves space. You do not need to pull three separate wires. This makes installation fast and clean. The outer skin is PVC or a special VCTF rubber. It resists oil and heat. It does not dry out like cheap plastic.
Technical Specs You Need to Know
We believe in being clear. Here are the real numbers for the Fuji VCTF 3×0.3SQ cable. These numbers come from the factory data sheets. They tell you exactly what you are buying.
Physical Dimensions
- Conductor Size: 0.3 mm² (approx 20 AWG)
- Number of Cores: 3 Cores
- Outer Diameter: About 6.0 mm (plus or minus 0.2 mm)
- Insulation Thickness: 0.6 mm
- Sheath Thickness: 0.8 mm
- Weight: About 5.7 kg per 100 meters (for reference on similar 0.75mm, scaled down for 0.3mm)
Electrical Performance
- Rated Voltage: 300 Volts (300/300V or 300/500V depending on use)
- Conductor Material: Bare Copper, fine-wired, Class 5 flexibility
- Max Conductor Resistance: Around 63.9 Ohms per km (at 20°C)
- Insulation Resistance: Minimum 5 Mega-Ohms per km
- Dielectric Strength: Can handle 2000 Volts AC for 5 minutes without breaking down
Safety & Environment
- Certification: Japan PSE (Electrical Appliance and Material Safety Act)
- Temperature Range: Flexing: -5°C to +70°C. Fixed: -40°C to +70°C
- Flame Test: Passes JIS C3305-4.26.2(b) flame test (self-extinguishing)
- RoHS: Compliant with environmental standards
- Oil Resistance: Special VCTF types have high oil resistance (see VCTF 332X series)
Where Should You Use This Cable?
You might ask, “Is 0.3mm² strong enough?” For heavy motors, no. But for control and signal, it is perfect. This wire shines in tight spots. Here are the best places to use it.
Robotics and Automation
This is the #1 use case. Industrial robots have arms that spin and twist. A stiff cable will snap the copper inside after 100,000 moves. This Fuji cable is rated for millions of bends. It is used in the “drag chain” or “towline” of a CNC machine. It connects the servo motor to the controller. It moves with the arm, not against it.
Small Appliance Manufacturing
If you build household electronics, this is your wire. Washing machines, electric fans, and rice cookers need internal wiring that fits in cramped spaces. The 0.3mm² size is great for the control board connecting to the display or the button panel. It is heat resistant up to 70°C or 105°C for special types, so it won’t melt inside a hot device.
Instrumentation and Sensors
Sensors need clean power. If the cable is noisy, the sensor reading is wrong. This cable has good shielding properties (depending on the specific shield type). Even the unshielded version has a tight twist that reduces interference. It is perfect for connecting temperature sensors or pressure gauges in a factory line.
Audio and Communication (Low Voltage)
While it is a power cable, the fine copper strands are great for low-voltage signals. Some installers use it for custom audio setups or security camera power where space is very tight. The PVC jacket is smooth, so it pulls easily through walls or conduit pipes.
Why Buy the Fuji Brand?
Fuji Electric Wire Industries is a giant in Japan. They set the standards for VCT and VCTF cables. When you buy Fuji, you are not buying a generic copy. You are buying a cable that meets the JIS C 3306 standard. This is a strict Japanese Industrial Standard.Cheap cables from unknown factories often lie about the copper content. They use “copper-clad aluminum” (CCA). This breaks easily and heats up. Our Fuji cable uses real pure copper. You can see the difference in the weight and the flexibility.The “VCTF” marking on the jacket is important.
- V = Vinyl (PVC)
- C = Cabtire (flexible cord)
- T = Thermoplastic
- F = Flat or Fine? Actually, in JIS, VCTF means a flexible cord with PVC sheath.
Fuji makes different grades. The standard VCTF is for general use. The VCTF 332X is for oily places. The VCTF 43Z is for robots. If you need the 0.3mm version, it is usually a special order for high-precision equipment. We have stock in our Shanghai warehouse for fast shipping.
How to Order and Customize
We know every project is different. Maybe you need a black jacket instead of gray. Maybe you need 500 meters, not 100. Maybe you need the ends stripped and tinned. We can do it.We are a trading and manufacturing combo. We have our own factory for some lines, and we partner with Fuji for the imports. This means we can offer a price that beats the big distributors but keeps the quality high.The minimum order quantity (MOQ) for the imported Fuji brand is usually strict because of shipping from Japan. But for our cooperative factories making similar specs, we can go as low as 100 meters.
Packaging Details
- Coils: 100 meters per coil (standard)
- Drums: 500 meters per drum (for bulk)
- Packing: Carton box, roughly 45x31x29 cm for a box of 100m.
- Weight: About 6 kg per 100m coil.
Don’t Let a Cheap Wire Ruin Your Machine
You built a great product. Don’t let a 0.10wirecausea1,000 repair. The cost of downtime is too high. You need a cable that bends, twists, and lasts. The Fuji 3-core 0.3mm² cable is the insurance policy for your equipment.We have the stock ready. We can ship today if you are in Asia, or air-freight if you are in the US or Europe. The price depends on the current copper market (LME), but we lock in prices for large orders.Ready to fix your cable problem?Send us an email right now. Tell us your voltage needs and how many meters you need. We will send you a quote within 24 hours. Let’s get your machines running smoothly with the best wire from Japan.Inquire Now for Best Price & Samples!