This article mainly introduces the key characteristics, application scenarios, and price-related information of the 3x240mm² aluminum conductor cross-linked polyethylene (XLPE) low-voltage underground cable. This cable belongs to the category of low-voltage cables with a rated voltage of 0.6/1KV, and is widely used in underground power transmission in urban distribution networks, industrial parks, residential communities, etc., serving as an important equipment to ensure the stable operation of low-voltage power systems. In terms of structure, the cable is of multi-core design, containing 3 aluminum conductors with a cross-sectional area of 240mm², and the conductors are wrapped with an XLPE insulation layer. XLPE material has excellent electrical insulation performance, heat resistance, and mechanical strength, which can effectively resist moisture, corrosion, and mechanical damage in the underground environment, ensuring the long-term stable operation of the cable. At the same time, the outer layer of the cable usually adopts a polyvinyl chloride (PVC) sheath, which further enhances its weather resistance, wear resistance, and flame retardancy, improving the safety of the cable in complex environments. In applications, the 3x240mm² specification gives it a high current-carrying capacity, which can meet the low-voltage power transmission needs of medium and large electrical equipment, building complexes, or industrial areas. Whether used as a buried cable for branch laying in urban power grids or as a power cable in industrial parks to connect distribution systems with production equipment, it can perform reliably. Its multi-core design also simplifies the wiring process, reducing installation space and costs. Regarding the price, the price of this cable is affected by various factors. Firstly, the fluctuation in the price of aluminum conductors is an important factor. As the main raw material, changes in the market price of aluminum directly affect the production cost of the cable. Secondly, factors such as the prices of insulation and sheath materials like XLPE and PVC, the complexity of the production process, the brand and quality standards of the cable (such as whether it meets international or domestic relevant certifications), and the quantity purchased will all have an impact on the final price. Generally speaking, cables with reliable quality and compliance with high-standard certifications are relatively more expensive, but they can ensure a longer service life and more stable performance, which is more economical in terms of long-term use costs. Overall, the 3x240mm² aluminum conductor XLPE low-voltage underground cable, with its reasonable structural design, excellent material performance, and wide applicability, has become an important choice in the field of low-voltage power transmission. Its price needs to be comprehensively considered in combination with specific needs and market factors.