A control cable with a 2.5mm² conductor size and 12 cores is a multi-core cable designed for transmitting control signals, typically in industrial and building automation systems. The 2.5mm² refers to the cross-sectional area of each individual conductor, and the 12 cores indicate the presence of twelve insulated copper or aluminum conductors within the cable. These cables are constructed with various materials for insulation and sheathing, depending on the application and environmental conditions. Here's a more detailed breakdown: Conductor: The core of the cable is made of stranded copper (or sometimes aluminum) with a cross-sectional area of 2.5mm². Insulation: Each core is individually insulated with a material like PVC or XLPE (Cross-linked polyethylene), providing electrical isolation between the conductors. Sheath: The entire assembly of 12 cores is then enclosed in an outer sheath, often made of PVC, which provides mechanical protection and environmental resistance. Armour (Optional): Some control cables may include an armour layer, typically steel wire (SWA), for added mechanical protection, especially for underground or harsh environments. Applications: These cables are widely used in control systems, automation, and instrumentation applications where multiple signals or power circuits need to be managed simultaneously. Features: The multi-core design allows for efficient transmission of various signals, and the 2.5mm² conductor size provides adequate current-carrying capacity for many control applications.