Stop Wasting Money on Cables That Crack and Fail
You know the headache. You have a high-end CNC machine or a robotic arm in your factory. The motor power cable needs to move. It bends, twists, and rubs against the machine frame every day. You buy a cheap local cable. At first, it works fine. But three months later, the insulation cracks. Copper wires show through. Sparks fly. The machine stops. You lose production time. You pay for a technician to fix it. And you have to do it all over again next year.This is not just annoying. It is expensive.You need a cable that does not get hard. You need a cable that resists oil and grease. You need a cable that meets strict safety standards so your insurance is valid. You need the real deal from Japan. You need MITSUBOSHI VCT.
What Is This 4-Core 2.5mm² VCT Cable?
This is not just any wire. This is a VCT cable made by MITSUBOSHI. It is the gold standard for portable power in Japan. “VCT” stands for Vinyl Cabtyre Cable. It is designed for moving parts.The “4-core” part means it has four separate wires inside. Why do you need four? Most simple motors use three wires (three-phase power). The fourth wire is the ground (earth). This ground wire keeps your operators safe. If a motor shorts out, the electricity goes to the ground, not the person touching the machine.The “2.5mm²” is the size of the copper wire. It is thick enough to handle big motors but not so thick that it is hard to bend. It is the perfect middle ground for industrial machines.The “Extra Soft” part is key. We use a special PVC mix. It stays soft even when it is cold. It does not get stiff like older rubber cables. You can pull it through tight pipes easily. It does not fight you during installation.
Technical Specs You Can Trust
We do not guess. We follow the JIS standards. JIS is the Japanese Industrial Standard. It is strict. If the cable does not pass these tests, we cannot sell it.Here are the real numbers for the 4-core 2.5mm² version:
| Feature | Specification | What It Means for You |
|---|---|---|
| Brand | MITSUBOSHI | Top tier Japanese quality. Not a copy. |
| Standard | JIS C 3312 / JIS C 3005 | Meets legal requirements for electrical safety in Japan and many other countries. |
| Voltage | 600V (Rated) / 300V (Fixed) | Can handle high voltage industrial power. Safe for 100V-600V systems. |
| Conductor | Annealed Copper (Stranded) | Very flexible. Tinned copper available for extra corrosion resistance. |
| Insulation | PVC (Polyvinyl Chloride) | Resists heat up to 60°C. Standard industry material. |
| Sheath | PVC (Gray) | Tough outer skin. Resists oil, acid, and alkali. |
| Core Count | 4 Cores | 3 Phase wires + 1 Ground wire. |
| Size | 2.5mm² (approx 12 AWG) | Good current capacity (see ampacity table below). |
| Outer Diameter | Approx 11.7mm | Fits most cable chains and drag chains. |
| Weight | Approx 215 kg/km | Heavy duty construction. Not flimsy. |
| Certification | PSE Mark | Mandatory for Japan. Proves it is safe. |
| RoHS | RoHS 2 Compliant | No harmful heavy metals. Safe for the environment. |
Ampacity Table (Current Capacity):Note: These are rough estimates for air. If you put the cable in a conduit or a bundle, you must lower the current.
- 2 Cores: Can carry about 21 Amps
- 3 Cores: Can carry about 19 Amps
- 4 Cores: Can carry about 17 Amps
Warning: If the ambient temperature is over 30°C, you must reduce the current. At 40°C, you can only use about 80% of the power. At 50°C, it drops to about 60%.
Where Should You Use This Cable?
Do not use this cable for your house wiring. It is not for that. This cable is for movement and industry.Here are the best places to use it:1. CNC Machine ToolsThis is the #1 use case. The spindle motor and the servo motor need to move. The cable goes inside the drag chain (energy chain). It bends back and forth thousands of times. MITSUBOSHI VCT is built for this “flexing life.” It resists the “memory” effect where the cable tries to stay curled up.2. Robot ArmsIndustrial robots have arms that rotate and extend. The power cable inside the arm needs to be light and flexible. This 4-core cable is perfect for the power supply to the servo motors in the joints.3. Conveyor SystemsIn a factory, conveyor belts move. The power cord for the belt motor is often exposed. It might get dragged or stepped on. The PVC sheath is tough. It resists abrasion. It resists the oil from the gearboxes.4. Portable EquipmentIf you have welding machines, stage lighting, or pumps that you move around a lot, this cable is great. It is durable. If you drag it across a concrete floor, it won’t tear easily.5. Wet or Oily EnvironmentsThe insulation is waterproof. The sheath resists oil. If you have a machine that leaks a little oil, this cable won’t rot. It is easy to clean. Just wipe it with a rag.
Why MITSUBOSHI Beats Cheap Alternatives
You might see cheaper cables from other brands. Or “VCT” cables that are not really MITSUBOSHI. Here is why you should pay a little more for the real thing:Consistent Copper QualityCheap cables use recycled copper. It has impurities. Impurities mean higher resistance. Higher resistance means heat. Heat means fire risk. MITSUBOSHI uses high-purity annealed copper. It runs cooler. It is safer.Real Sheath MaterialSome fakes use a hard plastic that cracks in winter. MITSUBOSHI uses a specific compound. It stays flexible down to -15°C or lower. It also has markers printed on it. You can see the brand name, the size, and the voltage printed on the side every few centimeters. This makes it easy to identify later.The PSE Mark is RealJapan has a law called the Electrical Appliance and Material Safety Law (DENAN). You cannot sell electrical products without the PSE diamond mark. Our cable has it. If you buy a cable without PSE for use in Japan, customs will seize it. You will lose your money. Our cable clears customs smoothly.Length and PackagingWe sell it in 100-meter drums. This is enough for most machine builds. It is easy to store on a spool. It does not get tangled like loose wires.
Installation Tips for Long Life
Even the best cable will fail if you install it wrong. Here are simple tips:
- Don’t pull too hard: When you pull the cable through a pipe, do not yank it. Use a pull string. If you pull too hard, you stretch the copper inside.
- Bend radius: Do not bend the cable sharply. The minimum bend radius is usually 4 times the outer diameter. For this cable (11.7mm), do not bend it tighter than about 45-50mm radius.
- Secure it: In a moving part, use cable ties (saddle clamps) to hold the cable to the frame. Let the cable move freely inside the chain, but do not let it flop around and hit other parts.
- Keep it clean: Wipe off the oil and dust once a month. It helps you spot cracks early.
Frequently Asked Questions
Q: Is this cable suitable for outdoor use?A: Yes, but not for direct sunlight for years. The PVC sheath is weather-resistant, but UV rays will make it hard over time. If you use it outside, put it in a conduit or paint it with UV-resistant spray.Q: Can I use this for 100V equipment?A: Yes. It is rated for 600V, so it is perfectly safe for 100V, 200V, or 400V systems. Just make sure the current (amps) does not exceed the limit for the wire size.Q: What is the difference between VCT and VCTF?A: VCT is the heavy-duty version with a thicker sheath. VCTF is a little more flexible (Fine stranded). For machine tools, VCT is usually better because it is tougher against physical damage.Q: Do you have a datasheet PDF?A: Yes. We have the full JIS specification sheet. It shows the exact dimensions, resistance values, and dielectric withstand voltage (3000V for 1 minute). Email us if you need the PDF.
Get Your Quote Today
Do not risk your production line with a cheap cable that might fail next month. Invest in quality that lasts for years. MITSUBOSHI VCT is the choice of engineers who know what they are doing.We have stock ready to ship. Whether you need one drum for a prototype or ten drums for a new production line, we can handle it. We ship worldwide. DDP (Delivered Duty Paid) is available for many countries.Click the “Inquiry” button now. Tell us how many meters you need. Tell us your destination port. We will send you a price within 24 hours. Let’s keep your machines running smooth.