This is a 0.6/1kV RZ1-K class fire-resistant power cable available in 1×120mm² to 1×240mm² sizes, featuring high-purity copper conductor and LSZH (Low Smoke Zero Halogen) materials. The cable delivers exceptional fire resistance (compliant with IEC 60331), maintaining circuit integrity for at least 90 minutes during fire. Its halogen-free design ensures low smoke and non-toxic emissions when burned, making it ideal for critical applications like subways, hospitals, and high-rise buildings with stringent fire safety requirements.

The flame retardant fire resistant power cable (copper core, fireproof insulation, XLPE/LSZH material, 4c×240mm² specification) is a power transmission product specially designed for high safety demand scenarios. With excellent flame retardancy, fire resistance and stable electrical performance, it plays an irreplaceable role in fire protection, high - rise buildings, industrial facilities and other fields.​ In terms of specification parameters, the cable has a 4 - core structure, with each core conductor having a cross - sectional area of 240mm². "4c×240mm²" clearly indicates that it contains 4 cores of the same specification, which is suitable for three - phase four - wire system or other multi - phase power systems and can meet the demand of large - capacity power transmission. In terms of current - carrying capacity, at an ambient temperature of 25℃, the long - term allowable current - carrying capacity of each core is about 400A, which can carry a power of about 88kW, enough to support the power supply of large equipment and intensive power consumption areas. The rated voltage of the cable is usually 0.6/1kV, and some models can reach a higher voltage level, which is suitable for power distribution systems of different voltage levels. Its outer diameter is about 65mm, the thickness of the XLPE insulation layer is about 2.2mm, and the thickness of the LSZH sheath is about 3.0mm. These parameters ensure that the cable has excellent mechanical strength and insulation performance while having strong current - carrying capacity.​ In terms of material selection, the cable reflects the combination of high safety and high performance. The conductor is made of high - purity electrolytic copper with a purity of ≥99.95%. It not only has excellent conductivity, which can reduce transmission loss, but also has good oxidation resistance and mechanical toughness, ensuring stable conduction in extreme environments such as high temperature. The insulation layer is made of cross - linked polyethylene (XLPE), which has excellent heat resistance and insulation after special treatment. It can work for a long time at 90℃, can withstand a high temperature of 130℃ in case of short circuit, and has high insulation resistance and corona resistance, effectively preventing electric leakage. The outer sheath is made of low smoke zero halogen (LSZH) material, which is one of its core advantages. LSZH material does not release toxic halogenated gases when burning, and has very low smoke emission, which can reduce casualties and equipment damage in fire. At the same time, it has good flame retardancy and corrosion resistance, adapting to various complex environments.​ In terms of characteristic uses, the cable is widely used in places with strict requirements for fire safety. In high - rise buildings, it is used as a power distribution trunk running through key parts such as stairwells, elevator shafts and pipe wells to supply power to important facilities such as fire protection systems, emergency lighting and elevators. Even in case of fire, it can still maintain power transmission for a certain period of time, striving for time for personnel evacuation and fire rescue. In crowded places such as large shopping malls, hospitals and subway stations, the power distribution system adopts a large number of such cables to reduce the risk of fire spread and ensure public safety. In the industrial field, factories with flammable hidden dangers such as chemical industry, metallurgy and textile use the cable to connect key production equipment and emergency power supplies to prevent production interruption or accident expansion due to cable damage in case of fire. In addition, places with high requirements for power continuity such as data centers and nuclear power plants also rely on its flame retardant and fire resistant characteristics to ensure the stable operation of core systems.​ Compared with ordinary cables, the core advantage of this cable lies in the dual protection of "flame retardant + fire resistant". The flame retardancy enables it to inhibit the spread of combustion when in contact with flame and delay the expansion of the fire. The fire resistance ensures that it can still maintain normal operation for a certain period of time (such as 90 minutes) when directly burned by flame (usually can withstand a high temperature of 750 - 950℃). At the same time, the environmental protection characteristic of the LSZH sheath meets the modern green building and safety standards, avoiding the secondary pollution caused by the combustion of traditional halogen - containing cables.​ To sum up, the flame retardant fire resistant power cable (4c×240mm²), with its reasonable specification design, high - end material selection, wide application scenarios and outstanding safety performance, has become the preferred product for power transmission in high - risk environments, providing a solid guarantee for the safe and stable operation of various facilities.

The Cr1 C1 Fire Resistant Cable 2X0.9mm² / 2X1.5mm² is a special-purpose cable designed for scenarios with high safety requirements, whose core advantages lie in its excellent fire resistance and stable electrical transmission capacity. It is widely applicable to fields with strict requirements for emergency power supply in case of fire, such as building fire protection, emergency lighting, and industrial control. The "Cr1 C1" in its model indicates that the cable has passed specific fire resistance certification, enabling it to maintain normal power supply for a certain period when a fire breaks out. This buys crucial time for personnel evacuation and emergency equipment operation, making it an important electrical supporting product for safeguarding lives and property safety.​ In terms of structural design, this cable adopts a 2-conductor configuration, with conductor cross-sectional areas of 0.9mm² and 1.5mm² respectively. These two specifications can be flexibly selected according to different power load requirements. The conductors are made of high-purity oxygen-free copper with a copper content of ≥99.97%, which not only has excellent electrical conductivity (DC resistance ≤20.0Ω/km at 20℃ for the 0.9mm² specification and ≤13.3Ω/km for the 1.5mm² specification) but also possesses good flexibility and fatigue resistance. This facilitates wiring in complex environments such as building walls, suspended ceilings, and pipeline interlayers, reducing construction difficulty. The surface of the conductor is tinned to effectively prevent oxidation and corrosion, extending the service life of the cable, especially suitable for scenarios that are in humid or semi-humid environments for a long time (such as underground garages and basement fire protection systems).​ Fire resistance is the core highlight of this cable. It has passed the Cr1 C1 fire resistance grade test, meaning that within the specified flame temperature (usually not lower than 750℃) and burning time (generally 90 minutes), the cable can maintain circuit integrity without short circuit or open circuit, and the insulation layer will not fall off or burn. To achieve this performance, the cable adopts a multi-layer fire-resistant structure design: the conductor is wrapped with a layer of mica tape fire-resistant layer. Mica tape has extremely high high-temperature resistance and insulation properties, and can form a hard inorganic insulation layer at high temperatures to block the invasion of flames; outside the fire-resistant layer, a flame-retardant polyvinyl chloride (PVC) or low-smoke halogen-free polyolefin insulation layer is extruded. This not only further enhances the fire resistance effect but also reduces the release of toxic and harmful gases and smoke during a fire, meeting the dual requirements of modern buildings for environmental protection and safety. Among them, the insulation layer of the low-smoke halogen-free version has a smoke density rating (SDR) of ≤60 and a halogen gas release amount of ≤5mg/g when burned, which can effectively reduce the impact of visibility in the fire site and the risk of personnel poisoning.​ In terms of electrical performance, the rated voltage of this cable is 450/750V, which meets the voltage requirements of most low-voltage emergency power supply systems. It can stably transmit electrical energy, avoiding the situation where emergency equipment (such as fire pumps, emergency indicator lights, and smoke exhaust fans) cannot work normally due to voltage fluctuations. At the same time, the cable has good aging resistance and mechanical strength, and can operate normally within a temperature range of -40℃ to 70℃. After 1000 hours of thermal aging testing, the insulation layer has a tensile strength retention rate of ≥80% and an elongation at break retention rate of ≥70%, which can adapt to different climate environments and usage conditions. In addition, the cable also has outstanding anti-interference performance. The 2-conductor structure adopts a twisted pair process, which can effectively reduce the impact of electromagnetic interference on signal transmission and ensure the stable transmission of emergency control signals, especially suitable for emergency circuits in industrial automation control.​ In terms of application scenarios, the Cr1 C1 Fire Resistant Cable 2X0.9mm² / 2X1.5mm² covers a wide range of fields. In civil buildings, it is often used in fire emergency lighting circuits, fire elevator power supply circuits, and fire alarm system lines of high-rise buildings to ensure that these key systems do not stop operating when a fire occurs; in industrial scenarios, it can be used in emergency control circuits of industries such as petrochemical, metallurgy, and electric power, such as the emergency shut-off valve control lines in chemical plants and the emergency cooling system power supply lines in power plants, to cope with potential high-temperature and fire risks; in public facilities, it is also suitable for emergency broadcasting systems and evacuation indication system lines in crowded places such as subways, tunnels, and airports, providing guarantees for large-scale personnel evacuation.​ Overall, the Cr1 C1 Fire Resistant Cable 2X0.9mm² / 2X1.5mm² has become an indispensable cable product in scenarios with high safety standards due to its reliable fire resistance, stable electrical transmission, flexible specification selection, and wide applicability. Its material selection, structural design, and performance testing all strictly comply with relevant national standards (such as GB/T 19666-2019 "General Rules for Flame Retardant and Fire Resistant Wires, Cables or Optical Cables"). It can not only meet the emergency power supply needs but also ensure the safe and stable operation of the electrical system in daily use, building a solid line of defense for the safe operation of various scenarios.