Industrial Control Cable (Grey Sheath / Numbered Cores)

BIS IS 694:2010 IS 8130:2013 Class 5 1100V AC IEC 60332-1 CE Marked ISO 9001:2015 RoHS Compliant

Engineered for high-density industrial logic and PLC harnessing, these control cables feature a Grey ST3 outer sheath and numbered black cores with high-resolution inkjet sequential marking for error-free termination. Type D (85°C HR) insulation supports demanding panel temperatures; 500m–1000m wooden drums suit OEM automated machine harnessing lines.

Conductor

Electrolytic Copper (99.97%)

Core Configurations

2C to 24C (Numbered)

Conductor Class

Class 5 — Fine Stranded

Identification

Inkjet sequential marking (white on black)

Conductor Range

0.5mm² – 2.5mm²

Thermal Rating

85°C Continuous (Type D HR)

Voltage Grade

1100V AC

Sheath Colour

Grey (ST3)

Standard Packing

Coils / 500m–1000m Drums

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Type D (85°C HR) insulation provides a higher thermal threshold than standard PVC — specified for dense control panels where ambient temperature rise from adjacent equipment is a design factor. For FR-LSH rated environments (OI >29%, HCl <15%), see our FR-LSH Single Core Wire.

Technical Specifications

Core configuration, ampacity & de-rating — IS 694:2010

Control cables are specified in the 0.5–2.5mm² control-duty range. Per-core current ratings are at 30°C ambient for thermal reference — each circuit is normally fused or MCB-protected well below these limits. For 85°C HR-PVC (Type D), apply the ambient de-rating factors after the ampacity table.

Core Configuration Matrix — IS 694:2010 (Control Duty Sizes)

↓ Download PDF Datasheet

Conductor (mm²)	2C	3C	4C	5C *	6C *	7C *	10C *	12C *	14C *	16C *	19C *	24C *
Control Duty Range — 0.5mm² to 2.5mm²
0.5	✓	✓	✓	✓	✓	✓	✓	✓	✓	✓	✓	✓
0.75	✓	✓	✓	✓	✓	✓	✓	✓	✓	✓	✓	✓
1.0	✓	✓	✓	✓	✓	✓	✓	✓	✓	✓	✓	✓
1.5	✓	✓	✓	✓	✓	✓	✓	✓	✓	✓	✓	✓
2.5	✓	✓	✓	✓	✓	✓	✓	✓	✓	✓	✓	✓
* Non-stock items — confirm availability with technical team. ✓ = Available. BIS Licence applies up to 4-Core 10.0mm²; 6–24 core variants are manufactured confirming to IS 694. Small runs: coils; project and OEM automated machine harnessing: 500m–1000m wooden drums.

Per-Core Current Ratings — IS 694:2010 (30°C ambient)

Conductor (mm²)	In Conduit — per core (A)	Clipped Direct — per core (A)	Open Air — per core (A)	Max R Class 5 (Ω/km)
0.5	7	8	10	39.0
0.75	10	11	13	26.0
1.0	11	13	15	19.5
1.5	14	17	20	13.3
2.5	19	24	27	7.98
Current ratings are per individual conductor. Control cable is always protected by control fuse or MCB rated well below conductor rating. Reference values per IS 694:2010 / IS 3961 (Part 2):2017 at 30°C ambient.

Ambient Temperature De-rating — 85°C HR-PVC (Type D)

Ambient Temp	Multiply by
30°C	1.00
35°C	0.95
40°C	0.90
45°C	0.85
50°C	0.80
55°C	0.74
60°C	0.67
65°C	0.58
Base: 30°C ambient. Indicative factors for 85°C HR-PVC Type D — verify with engineering for formal design calculations.

How to apply: Multiply the tabulated current rating by the factor for your installation's ambient temperature.

Example: 1.5mm² control cable clipped direct = 17A at 30°C. At 45°C ambient: 17 × 0.85 = 14A.

Particularly relevant for industrial buildings, rooftop cable runs, and locations in North and Central India where summer ambient temperatures regularly exceed 40°C.

Cable Construction

Fully vertically integrated manufacturing.

Industrial control cable combines Class 5 conductors, Type D heat-resistant core insulation with printed numbering, and a grey ST3 outer sheath — engineered for signal integrity and reliable identification in crowded PLC and DCS marshalling.

Class 5 Fine-Stranded Copper Conductors

Multiple fine copper strands per core, Class 5 per IS 8130:2013. Fine stranding allows routing through tight conduit and ensures the cable lies flat in cable trays without kinking at bends — important in crowded control panel environments.

Numbered Black Core Insulation

Each core is individually extruded with Black Type D (85°C) PVC insulation and marked with high-resolution inkjet sequential marking (white on black) for traceability on assembly lines. Numbering eliminates the limitations of color-coding in high core-count panels.

Grey ST3 Outer Sheath

All cores are bundled and protected by a robust Grey ST3 outer sheath per IS 5831. This industrial-grade jacket provides superior resistance to mechanical wear and environmental factors, distinguishing control duty circuits from standard power cables. 500m–1000m wooden drums support OEM automated machine harnessing and long continuous pay-off.

Engineering Advantages

Why control cable is the correct specification for command and signal circuits.

Control cables are specified for their electrical isolation, mechanical robustness, and unambiguous core identification — not continuous current capacity.

High Conductor-to-Conductor Isolation

Individual core insulation provides high resistance between adjacent conductors — critical for preventing crosstalk on 4–20mA signal loops and digital I/O circuits where adjacent conductor leakage can cause false triggering.

IS 694:2010 insulation resistance

Type D (85°C) Thermal Safety

Heat Resistant (HR) Type D PVC insulation within our BIS licence scope. Provides a higher thermal threshold for high-density control panels where temperature rise from adjacent equipment is a factor.

85°C Rated Insulation

High Core Count Availability

Available up to 24 cores — enabling a single cable to carry all I/O signals from a field junction box back to a DCS or PLC marshalling cabinet. Pair with 500m–1000m wooden drum put-ups for high-volume OEM automated machine harnessing programs.

Up to 24 cores · Drum logistics

100% Lot-Level Testing

Every production lot tested for spark resistance, high voltage withstand, and exact resistance measurement before dispatch. No batch-average shipping.

HV Test: IS 694:2010 Clause 12.1

Lead-Free & RoHS Compliant

FR PVC compound formulated entirely without lead stabilisers. CE marked and RoHS compliant — suitable for institutional tenders and international export requirements.

CE Marked · RoHS

Zero Work-Hardening

In-line automated thermal annealing ensures electrolytic copper remains highly flexible, preventing micro-fractures during installation in tight conduits and sharp bends.

Class 5 Flexibility

Applications

Where this cable is specified.

Control cables are specified for all command, signal, and instrumentation circuits in industrial facilities — wherever a circuit carries a 4–20mA signal, a digital I/O, or a low-voltage control command rather than a power load.

Institutional

Hospitals & Healthcare

Specified for healthcare installations where High Oxygen Index FR properties are strictly required under NBC fire safety provisions.

Hospitality

Hotels & Commercial Towers

Specified for major hotel and high-rise developments requiring fire safety compliance. Historical supply to Delhi landmark five-star hotel projects.

Building Automation

BMS & SCADA Systems

Building management systems and SCADA installations use control cables for hardwired I/O connections — status signals, alarms, and control outputs.

Energy

Power Plant Auxiliary Wiring

Power plants use control cables for relay protection circuits, metering connections, and interlock wiring between switchgear panels — where IS 694:2010 compliance and full test documentation are mandatory.

Industrial

Control Panels & Distribution

Internal wiring of LT panels, distribution boards, and motor control centres. Sizes 1.0mm² to 16mm² most common for panel internal wiring.

EPC

Large EPC Projects

EPC contractors specify control cables with full IS 694:2010 test documentation, CE declaration, and material traceability for government and institutional project compliance requirements.

Certifications & Compliance

Standards this product is manufactured to.

National Cables industrial control cable is manufactured to IS 694:2010 with grey ST3 sheathing, numbered black cores, and Type D (85°C) insulation within our BIS licence scope. Full documentation available for institutional procurement, government tenders, and export requirements.

IS 694:2010 & IS 8130:2013

Primary BIS Manufacturing Standards

Manufactured to Bureau of Indian Standards IS 694:2010 for PVC insulated multicore control cables up to 1100V. Conductor class verified per IS 8130:2013 Class 5. Type D (85°C) insulation and ST3 sheathing within certified scope.

BIS Licence No: 8800140116

Vertical flame retardance — IS 694:2010 Clause 12.6

High voltage withstand — IS 694:2010 Clause 12.1

Insulation resistance verified

Conductor resistance — IS 8130:2013 Table 2

IEC 60332-1

International Flame Retardance Standard

Tested to IEC 60332-1 — the current international standard for single cable vertical flame propagation. Required by modern EPC contractors, European buyers, and Gulf project specifications.

Single cable vertical flame propagation

Oxygen Index: > 29%

Temperature Index: > 250°C

Self-extinguishing properties confirmed

NBC 2016 & CEIG

National Building Code & Government Electrical Safety

NBC 2016 Part 8 (Fire Protection) specifies IS 694:2010-compliant FR cables for building wiring in high-rises, hospitals, hotels, and public buildings. CEIG electrical safety norms met through IS 694:2010 and IS 8130:2013 certification. No separate NBC or CEIG certificate exists — compliance is established by holding the BIS licence.

NBC 2016 compliance via IS 694:2010 BIS certification

CPWD & state PWD tender compliant

CEIG norms met via IS 694:2010 & IS 8130:2013

PSU & government institutional supply ready

CE & ISO 9001

European Conformity & Quality Management

CE marked for European market access — Declaration of Conformity available for all export orders. Manufacturing operations certified to ISO 9001:2015, ensuring documented process controls and consistent specification output across every production run.

CE Declaration & ISO 9001 Certificate — available on request

CE Declaration of Conformity available

EU Low Voltage Directive compliant

RoHS Directive compliant

ISO 9001:2015 — third-party audit verified

Frequently Asked Questions

Industrial control cable — technical questions answered.

Common questions from panel builders, DCS/PLC system integrators, EPC procurement teams, and industrial automation specifiers selecting multicore control cable for industrial installations.

What is the voltage rating for industrial control cable?

National Cables' industrial control cable to IS 694:2010 is rated up to and including 1100V AC. The cable is factory-tested at 3kV for 5 minutes per IS 694 requirements.

This voltage classification is more conservative than typical European 300/500V control cables (YY / IEC 60227-7), providing significant headroom for mixed power and signal circuits in industrial panels.

For specific voltage class confirmation for export projects, refer to the designation printed on the sheath or request the product datasheet.

Does the cable have numbered cores for termination?

Yes. Our multicore industrial control cable uses numbered core identification, with white printing on black PVC insulated cores for easy sequential termination. Cables with three or more cores include a green/yellow protective earth conductor in the outer layer.

This numbering system simplifies panel wiring and reduces termination errors in high-density control installations. Specific core identification schemes can be confirmed from the product datasheet for your ordered core count (2 to 24 cores stock, up to 61 cores made-to-order).

Do you offer an LSZH version for high-density control racks?

Yes. For high-density control racks, server rooms, or enclosed environments where halogen-free performance is specified, we manufacture HFFR/LSZH multicore control cable to IS 17048:2018 under BIS licence CM/L-8800227819.

These cables use halogen-free polyolefin insulation with HCl emission below 0.5%, suitable for data centres, metro control rooms, and public infrastructure where corrosive fire by-products must be avoided.

Contact our technical team for stock availability and made-to-order lead times for specific core counts.

Can this cable be used on drag chains or energy chains?

No. Standard industrial control cable to IS 694:2010 is designed for fixed installation or occasional flexing, not continuous repeated flexing.

Drag-chain and energy-chain applications require cables specifically designed for dynamic movement, typically using Class 6 conductors and specialised sheath compounds engineered for repeated flex cycles. Using a fixed-installation cable in drag-chain service will cause premature conductor fatigue and sheath failure.

For drag-chain requirements, specify a purpose-designed high-flex cable.

Technical Procurement

Request institutional pricing and technical documentation.

Our engineering team responds within 24 hours with accurate bulk pricing, complete compliance documentation, and specifications. BOQ uploads accepted.

Request Project Pricing → Download Datasheet

Pricing within 24 hoursAccurate lot pricing based on cross-section, quantity, and delivery timeline.

Full test documentationIS 694:2010 test reports, BIS certificates, CE declaration, and material traceability for all institutional and export orders.

BOQ supportUpload your bill of quantities and our team will respond with a full line-item quotation.

Packing & automated harnessingSmall orders on coils; project and OEM automated machine harnessing programs use 500m–1000m wooden drums for continuous pay-off. Confirm lead time with technical team.

Export & International Standards

Supplying to an international project?

This cable is manufactured to IS 694:2010 on a BIS-certified production line. The same facility produces cable conforming to equivalent international control and power cable standards — if your project specifies YY / VDE 0250 or NYY / IEC 60502-1, we can supply from the same certified manufacturing facility.

VDE 0250 / IEC 60227-7

YY Control Cable

Europe · GCC · Industrial automation

IEC 60502-1 · 0.6/1kV

NYY-J / NYY-O

Europe · GCC · Africa · Power & control

View all export standards & markets →