Emergency Command Circuits Fire Rated Wire NH-KVV Multi Core Control Cable

NH-KVV is a fire-resistant multi-core control cable used to ensure the continued operation of critical control, monitoring, and command circuits during a fire, according to specified standards and required durations. It is widely used in emergency system interlocking and control cabling in buildings, transportation facilities, and industrial sites where circuit continuity is a critical component of life-safety design. NH-KVV is often chosen by engineers when a dedicated control cable fabric (rather than a power feeder) is required, as it supports stable terminations, clear conductor identification, and scalable conductor counts to meet control cabinet needs.

Typical project rated voltage: 450/750 V or 300/500 V (depending on standards and tender requirements)

Please confirm the exact rated voltage and fire resistance requirements specified in your Bill of Quantities (BOQ) to avoid substitution risks.

• Emergency system control circuits for smoke extraction equipment
• Auxiliary and control circuits for fire protection equipment
• Emergency lighting control and feedback loops
• Building automation emergency control and linkage circuits
• Critical status signals, alarms, and interlocking circuits in evacuation routes
• Lines from control cabinets to field equipment requiring continuity of wiring during a fire

• Fixed installation in conduits, cable trays, shafts, risers, technical corridors, equipment rooms, and protected pallet aisles.

• 2, 3, 4 cores: For basic start/stop and interlocking devices
• 5, 7, 8, 10 cores: For multi-signal devices
• 12, 16, 20, 24 cores: For cabinet and subsystem cabling
• 30, 37, 48, 61 cores: For centralized I/O and large control panels

• 0.5, 0.75, 1.0, 1.5, 2.5, 4, 6
• Common Contractor Specifications: 0.75, 1.0, 1.5, 2.5

• 4 cores x 1.5: For equipment interlocking devices
• 7 cores x 1.0 and 10 cores x 1.0: For multi-signal devices
• 12 cores x 0.75 and 16 cores x 0.75: For cabinet cabling
• 24 cores x 0.5, for dense signal cabling

Availability is subject to availability based on core identification methods and fire-resistant construction requirements of reference standards.

• Ensuring Continuity of Life-Safety Control Circuitry
• Fire-resistant construction helps maintain control functions for a specific period during a fire, supporting coordinated evacuation and emergency response systems.
• High-Efficiency Multi-Core Cables for Cleaner Panels and Faster Commissioning
• Higher core counts reduce cable congestion, improve labeling and cabling, and simplify cabinet-to-field cabling management.
• Easy Termination and Maintenance for Contractors
• Control cable construction supports simple stripping, grouping, and termination of control cabinets, relays, and terminals.
• Cost-Effective Control Cabling Compliance Solution
• Achieve fire-resistant performance targets for control circuitry without overusing heavy-duty feeder solutions.
• Stable Supply for Projects and Distributors
• Universal cross-sections and repeatable constructions support phased delivery and continuous replacement stock.

Copper conductors are manufactured to the flexibility levels required for cabinet installation and field cabling, and resistance is controlled to ensure stable signal performance.

A dedicated fire-resistant coating is applied according to standard requirements to form a critical barrier, ensuring circuit integrity in fire environments.

The insulation layer is coated with a controlled thickness to meet the dielectric performance and dimensional stability requirements of multi-core assemblies.

Cores are numbered or color-coded and then assembled according to controlled lamination lengths to maintain harness stability and improve sheath quality.

An outer sheath is coated to provide mechanical protection and improve installation durability, and marked for easy traceability and project control.

Typical factory inspections include conductor resistance, insulation thickness, spark testing, voltage testing, dimensional inspection, continuity verification, and fire resistance verification according to the required rating.

• When fire-resistant control cables are required to ensure normal operation of emergency control functions in fire environments, please select NH-KVV type cables.
• Select the number of cores based on the signal quantity and reserve the number of channels required for expansion.
• Select the cross-sectional area based on the control load current, line length, voltage drop limits, and termination requirements.
• If the line has strong electromagnetic interference, please specify whether shielding is required. If the line has high mechanical risks, please specify whether armoring or other protective measures are required.

JinHong has a wide range of cable and conductor products for you to choose from. We will provide caring services and professional project solutions for everyone who needs them.

JinHong cable products are manufactured according to GB, IEC, BS, NFC, ASTM, DIN, and other international standards. Our technical team can customize cable products that meet your requirements according to your needs.

JinHong provides free professional consulting services to provide you with one-stop project solution services and rapid product delivery solutions.

While we at JinHong provide high-quality cables, we also provide good delivery solutions. While ensuring the safe delivery of products, we provide the best packaging and transportation solutions, greatly reducing customers’ transportation costs.

JinHong cable packaging is provided in the form of wooden reels, corrugated boxes, and coils. The cable ends are sealed with BOPP self-adhesive tape and a non-hygroscopic sealing cap to protect the cable ends from moisture. We can print the required marks on the outside of the barrel with waterproof material according to customer requirements.