Tired of Cables Breaking and Causing Downtime?
You run heavy machines. You use expensive equipment. The last thing you need is a power cable that gives up when the pressure is on. We know the pain. You pull the cable to move a robot arm. It snaps. You drag it across a factory floor. The jacket rips. You see voltage drops because the copper inside is not pure enough. This stops your work. It costs money. It frustrates your team.You need a cable that is tough. It must handle pulling, twisting, and dragging. It must carry power safely without heating up. Most cheap cables use recycled copper or weak plastic. They fail in six months. You need the Japanese Sun 4-core 3.31 sq mm cable. It is built for real work. It has high tensile strength. It connects your equipment reliably every single day.
What Makes This Cable Special?
This is not just a standard wire. It is a specialized power cable made for high-stress environments. The “Japanese Sun” brand is famous for quality. We focus on three main things: strength, conductivity, and safety.
Pure Copper Conductor for Max Power
The inside of the cable is the most important part. We use high-purity oxygen-free copper (OFC). It is 99.99% pure. Why does this matter? Impurities in cheap copper create resistance. Resistance creates heat. Heat melts the insulation. Our copper stays cool even under heavy loads. It ensures your equipment gets the exact voltage it needs. No power loss. No wasted energy.
High Tensile Strength Armor
You asked for “high tensile strength.” We deliver. This cable uses a special reinforcement layer. It can handle heavy pulling force. If you install it in a drag chain or hang it overhead, it will not stretch or break. The outer sheath resists cuts and abrasion. It is tough against oil, chemicals, and sunlight. This is the cable for equipment connection that moves. It stays strong where others fail.
Flexible Yet Durable Design
Stiff cables are hard to install. They kink and twist. This cable is different. It uses fine-stranded copper wires. This makes it very flexible. You can route it around tight corners in your control cabinet. But it keeps its shape. It does not collapse under pressure. It is easy for your electricians to work with.
Technical Specifications You Can Trust
We believe in transparency. Here are the exact numbers for this 4-core 3.31 sq mm cable. These specs meet Japanese Industrial Standards (JIS) and international safety rules.
| Parameter | Value |
|---|---|
| Brand | Japanese Sun (Imported Quality) |
| Model | 4-Core Power Cable (Equipment Type) |
| Wire Gauge (AWG) | 12 AWG |
| Cross-Sectional Area | 3.31 mm² (Approx 3.5 mm²) |
| Number of Cores | 4 Cores (3 Phase + Ground or 2 Power + 2 Signal) |
| Conductor Material | Tinned or Bare Oxygen-Free Copper (OFC) |
| Insulation Material | PVC or XLPE (Cross-linked Polyethylene) |
| Outer Sheath | PVC / Rubber / SWA (Steel Wire Armoured) option |
| Rated Voltage | 300V / 500V / 600V (Low Voltage) |
| Temperature Range | -40°C to +90°C (Operating) |
| Certifications | PSE (Japan), UL, RoHS, CE |
| Flame Retardant | Yes (Self-extinguishing) |
| Tensile Strength | High (Reinforced construction) |
Note: The 3.31 sq mm size is very specific. It fits Japanese standard terminals and connectors perfectly. It is slightly larger than standard 12 AWG (3.31 vs 3.30) to ensure a tight fit and better current flow.
Where Should You Use This Cable?
This cable is not for your lamp or toaster. It is for serious industrial use. You will find it in places where failure is not an option.
Industrial Robotics and Automation
Robot arms move constantly. They twist and turn. Standard cables crack at the base of the robot. This high tensile cable handles the constant motion. It is perfect for servo motors and encoder connections. It keeps the signal clean and the power flowing.
Heavy Machinery and CNC Machines
Computer Numerical Control (CNC) machines need stable power. A voltage dip can ruin a precision part. This 12 AWG cable handles the high current draw of spindle motors and pumps. The thick insulation protects against coolant oil and metal shavings.
Outdoor and Construction Sites
If you work outside, UV rays destroy cheap plastic. Our cable has carbon black and UV stabilizers in the jacket. Rain, snow, and sun won’t crack it. You can use it for temporary power distribution or permanent outdoor lighting. It is also rated for direct burial if you need to run power underground.
Control Cabinets and Switchgear
Inside a control panel, space is tight. You need a cable that bends easily but looks professional. The 4-core design is great for 3-phase motor control or powering multiple devices from one source. The color-coded cores (Black, Red, White, Green/Yellow) make wiring simple and error-free.
Why Choose “Japanese Sun” Quality?
You might find cheaper cables from other markets. But “cheap” often costs more in the long run. Japanese manufacturing standards are strict.
Consistency is Key
Every meter of this cable is tested. The copper diameter is exact. The insulation thickness is consistent. You won’t get a batch that is too thin one month and thick the next. This consistency prevents short circuits and grounding issues.
Safety First
Electrical fires are a real risk. This cable is flame retardant. If there is a short circuit, it will not spread the fire. It is also RoHS compliant. It does not contain lead, mercury, or cadmium. It is safe for your workers and the environment.
Long Lifespan
Because of the high tensile strength and UV resistance, this cable lasts 3 to 5 times longer than generic PVC cables. You buy it once, and you forget about it. You do not need to replace it every year. This saves you labor costs and machine downtime.
How to Order and Customize
We know every project is different. Maybe you need a longer length. Maybe you need a special connector on the end. We can help.We offer customization services. We can add ferrules, ring terminals, or industrial connectors like M12 or M8 circular connectors. We can print your company name on the cable jacket. We can put it in wooden drums for safe shipping across the ocean.Our minimum order quantity (MOQ) is flexible. We support both small sample orders for testing and large bulk orders for production runs. We ship from major Chinese ports like Shanghai, Shenzhen, and Qingdao. We handle the paperwork. We ensure you get the PSE certificates and Bill of Lading on time.
Ready to Stop Worrying About Cable Failures?
You have a business to run. You need reliable parts. This Imported Japanese Sun 4-core 3.31 sq mm power cable is the solution. It is strong. It is safe. It is built for heavy equipment.Do not settle for weak wires that break. Choose a cable that pulls its weight. Choose high tensile strength. Choose Japanese quality.Send us your inquiry today. Tell us the length you need. Tell us where you will use it. We will send you a competitive quote within 24 hours. Let us build a power connection that lasts for years. Click the “Contact Now” button or email us directly. Let’s get your equipment powered up safely.