Hitachi CRCC Certified 3-Core 4 sq mm Low Smoke Halogen-Free (LSZH) Railway Power Cable – XLPE Insulated

The Hidden Danger in Your Railway Tunnels

Imagine a fire breaking out in a long railway tunnel or a crowded metro station. The lights flicker and die. The air fills with thick, black smoke. People cannot see the exit. They cough and struggle to breathe. This is not just because of the fire. It is because of the cables burning alongside it. Standard PVC cables release toxic gas and heavy smoke when they burn. This gas is more deadly than the fire itself. It kills escape routes and endangers passengers. You know that safety is not just a checkbox. It is the most important part of your railway project. You need a cable that stops burning when the fire is gone. You need a cable that does not produce toxic smoke. You need a cable that saves lives, not just carries electricity. This is why we built the Hitachi 3-core 4 sq mm Low Smoke Halogen-Free (LSZH) power cable. It is designed for the hardest environments. It is safe for humans. It is tough enough for the railway.

What Makes This Cable Different?

This is not a standard power cord. It is a specialized engineering solution. The “Low Smoke Halogen-Free” name tells you exactly what it does. When fire touches this cable, it does not burn easily. If it does burn, it produces very little smoke. Most importantly, it releases zero halogen gas. Halogen is the chemical in old cables that creates toxic acid when burned. Our cable uses a special sheath material. It is made from flame-retardant thermoplastic or LSZH compound. This material passes strict fire tests. It limits the spread of flames. It keeps the smoke density low. This means rescue teams can see. Passengers can breathe. Equipment does not get covered in corrosive acid gas.The “3-core 4 sq mm” part is about power. You have three conductors inside. One for phase, one for neutral, and one for ground. Each conductor has a cross-section of 4 square millimeters. This size is perfect for control circuits, lighting, and low-voltage power in railway cars. It is flexible enough to bend in tight spaces under the floor or in the driver’s cab. But it is thick enough to carry the current without getting too hot. We use high-quality copper for the conductor. Copper has low resistance. This means less energy is wasted as heat. It means your system runs cooler and more efficiently.

Technical Specifications That Matter

We build this cable to meet global standards. Here are the real numbers you need for your engineering file:

• Conductor: High-purity Copper (Cu). Solid or stranded depending on your need for flexibility.
• Insulation: Cross-linked Polyethylene (XLPE). This is better than standard plastic. It handles higher temperatures. It does not melt easily.
• Sheath (Jacket): LSZH (Low Smoke Zero Halogen) or LSF (Low Smoke Fume). Color is usually black or orange for high visibility.
• Voltage Rating: 0.6/1 kV (600/1000V). Some versions go up to 30kV for high voltage, but this 4 sq mm version is for low voltage control and power.
• Operating Temperature: -40°C to +90°C. It works in freezing winters and hot summers. It works inside the heated under-floor of a train.
• Minimum Bending Radius: About 63mm (fixed) or 12-15 times the cable diameter. It bends easily for installation.
• Fire Standards:
  • IEC 60332-1-2 (Flame retardant).
  • IEC 61034 (Low smoke emission).
  • IEC 60754 (Halogen content test).
  • Complies with EN 45545-2 for railway vehicle fire protection (R22, R23, R24 standards).
• Toxicity: Passes NFPA 130 and SMP 800C tests. Very low toxicity index.
• Weight: Approximately 90-100 kg per km (depending on exact construction).

Where Do You Use This Cable?

You can use this cable anywhere safety is critical. But it is specifically made for the railway industry. Here are the top places you will find it:Under the Floor of Railway CarsThis is the harshest place for a cable. It gets dirty. It gets wet. It vibrates constantly. The 4 sq mm size is perfect for the jumper cables between coaches. It connects the power and signal lines. The LSZH sheath protects the train interior if a short circuit happens under the floor.Driver’s Cab and Control PanelsThe driver needs to focus. If a wire shorts in the dashboard, they cannot be breathing poison gas. This cable is safe for the cab. It is also used for the signal circuits that tell the train how fast to go.Metro and Subway TunnelsTunnels have no windows. Ventilation is limited. If a cable catches fire here, smoke fills the whole system. Our cable keeps the smoke clear. It helps the ventilation system work longer. It is mandatory for modern subway lines in Europe, Asia, and North America.Railway Stations and AirportsThese are public places with thousands of people. Building codes require LSZH cables in ceilings and walls. This cable meets those codes. It is also used for the lighting circuits and escalator power feeds.Industrial and Hazardous AreasOil rigs, mines, and factories use this cable too. Anywhere there is gas or dust, a spark from a cable can cause an explosion. The flame-retardant jacket helps prevent this.

Why Hitachi? The CRCC Advantage

You are buying from a legacy brand. Hitachi Cable (now part of Proterial or Hitachi Energy group) started in 1956. We have over 60 years of experience. We do not just make cables. We make systems. We have a “One Stop” solution. We can give you the power cable, the signal cable, and the LAN cable all from one factory. This makes your logistics easier.The most important mark on this product is CRCC Certified. CRCC stands for China Railway Product Certification Center. This is the “Golden Passport” for railway supplies in China and many export markets. To get this stamp, the cable must pass brutal tests.

1. Type Tests: We test the design in a lab. We burn it. We freeze it. We run high voltage through it.
2. Factory Tests: Every batch is tested. We check the insulation resistance. We check the sheath thickness. We make sure the diameter is exact.
3. Field Tests: We test it on real tracks. We check for vibration resistance and electromagnetic interference (EMC).

When you buy this, you are not guessing. You are buying a proven product. We also offer harness solutions. We can pre-cut the cable. We can add connectors. We can print numbers on the jacket. This saves your workers hours of time on the assembly line. You get less scrap. You get less waste.

Installation and Handling Tips

Installing railway cable is hard work. We try to make it easier. The 4 sq mm cable is flexible. You do not need heavy machines to pull it. But you still need to follow rules to keep it safe.

• Storage: Keep the reels in a dry place. Do not stack them too high. The temperature should be between -40°C and +60°C.
• Pulling: Use a lubricant if pulling long distances. Do not pull too hard. The maximum tension is usually around 10-15 MPa. If you pull too hard, you stretch the copper and change the electrical properties.
• Bending: Do not kink the cable. The minimum bending radius is 12 to 15 times the outer diameter. If you bend it too sharp, you crack the XLPE insulation.
• Termination: Use proper cold-shrink or heat-shrink terminations. Make sure the seal is tight. Water is the enemy of underground cables. We use water-blocking gel in some versions for direct burial.
• Separation: Keep power cables away from signal cables. If you must cross them, cross at 90 degrees. This stops the magnetic field from the power cable messing up the signal.

Environmental and Future Proofing

The world is changing. Regulations are getting stricter. The EU has RoHS and REACH. They ban hazardous substances. Our cable is fully compliant. It is lead-free. It is cadmium-free. It is safe for the environment.We also think about energy efficiency. The copper conductor is optimized. Low resistance means less power loss. Over 10 years, this saves a lot of electricity in a metro system.We use recyclable materials where possible. The packaging uses post-consumer materials. We are trying to reduce the carbon footprint of our factory. When you choose this cable, you are choosing a sustainable future for your infrastructure project.

Get Your Quote Today

You have a project to finish. You need a cable that works. You need a cable that is safe. You need a cable that has the CRCC stamp. Do not risk your reputation with cheap, untested wire.We have the stock. We have the certification. We have the technical team to support you. Whether you need 100 meters for a prototype or 500 kilometers for a new line, we can deliver.Send us your inquiry now. Tell us the length. Tell us the jacket color. Tell us if you need connectors attached. We will send you a competitive price within 24 hours. Let’s build a safer railway together.Request a Quote for Hitachi 3-Core 4 sq mm LSZH Railway Cable Today!