Cold wire connected 12V self-regulating heating cable with PE insulation and low voltage PTC heater. New upgraded product with a maximum circuit length of up to 15 meters. The DWK12-J730 self-regulating heating cable operates at low voltage 12V, compatible with car or truck battery power sources, making it suitable for vehicle installations and various heating applications including freeze protection and heat tracing. Easy and convenient to install. The cable does not overheat; average operating temperature range is 30–50°C. Developed for reliable performance, this self-regulating heating cable is commonly used in industrial applications such as fire protection, petroleum, chemical, steel, and power industries for pipe and tank heating, frost protection, and roof or gutter snow melting. Features a uniform core strip of PTC material between two parallel metal busbars. When connected to a power source, current flows laterally through the PTC layer, which acts as a resistive heating element converting electrical energy into heat. The PTC material’s resistance increases with temperature, limiting current flow at approximately 65°C, preventing overheating and ensuring automatic temperature control. This self-limiting heating technology provides uniform temperature distribution, energy efficiency, rapid warm-up, and allows for cut-to-length installation within the maximum allowable length. The cable can be overlapped and crossed without damage. Cable structure: 1. Copper-core wire: 7 x 0.30mm 2. Conductive heating element 3. Polyolefin outer jacket Specifications: 1. Standard color: black (custom options available) 2. Temperature range: Maximum working temperature 60°C; Maximum exposure temperature 85°C; Maximum enduring temperature 105°C 3. Minimum installation temperature: -40°C 4. Start-up current (at 10°C): ≤1.6A/m 5. Cold lead wire length: 0.4 meter 6. Power output: 15W/m Advantages: 1. Uniform temperature distribution, safe and reliable operation 2. Energy efficient 3. Rapid temperature rise 4. Low installation and operational costs 5. Simple installation and maintenance 6. Suitable for automated temperature management systems 7. Environmentally friendly, no emissions 8. Easy to connect—simply attach the cold wire to a 12V power supply Quality guarantee: 2 years Package includes: 1 x 12V self-regulating heating cable (length customizable) with 0.4m cold wire This heating cable is ideal for pipe and tank freeze protection applications, including water pipes, solar water heater lines, oil pipelines, and downspouts. Also suitable for roof snow melting, tank heating, water line antifreeze, and road de-icing. Important notice: This 12V heating cable must only be connected to a 12V power supply to avoid damage. Installation guidelines: 1. Wrap the heating cable around the pipe or install it straight along the pipe surface. Secure the entire length every 30–60 cm using thermal tape or aluminum tape. 2. It is recommended to apply a layer of rubber insulation over the pipe to improve heating efficiency, reduce energy consumption, and protect the cable. Recommended accessories (sold separately): Heat shrink tube Insulation tape High-temperature glass fiber tape Thermally conductive aluminum adhesive tape Rubber and plastic insulation layer FAQ: Q: What are the benefits of self-regulating heating? Self-regulating heating cables automatically adjust heat output based on ambient temperature, preventing overheating and underheating. Compared to other heating methods, they offer consistent temperature control, explosion-proof safety, all-weather durability, high reliability, and long service life. They are especially effective for long-distance pipeline tracing and heating in confined spaces. While initial cost may be higher, self-regulating cables provide the most economical solution for continuous, long-term operation.