Specification: 0.6/1kV, 1~5 cores, cross-section 2.5mm² ~ 400mm² Application: Critical fire circuits for fire pumps, exhaust fans and emergency lighting. Widely applied in hospitals, subways, tunnels, commercial complexes and high-rise buildings. It can maintain power supply for a certain period under fire to keep emergency fire equipment running. Suitable for fixed laying in cable trays and conduits. Choose armored WDZN-YJY22 for direct burial.