Suitable cable: 0.6/1kV dual core low-voltage cable (phase line+neutral line), with a cross-section of 4-300mm ², in compliance with IEC 60502-2 and GB/T 12706 standards, designed specifically for industrial equipment, rail transit signal systems, and renewable energy scenarios. Pre expanded silicone rubber sleeve (tensile ratio ≥ 600%), tightly wrapped around the cable by elastic shrinkage, suitable for irregular cross-sections