Factory-Direct Supply of Certified Wires and Conductors for Diverse Industrial Applications
1.5mm 2.5mm 19 Core Steel Wire Armoured SWA Cable
Standard: MS 2103 / IEC 60502-1
Rated Voltage: 600/1000V (0.6/1kV)
Conductor: Plain annealed stranded copper, Class 2 (IEC 60228)
Insulation: PVC Type PVC/A (white with black sequential numbering)
Inner Bedding: PVC Type ST1
Armour: Galvanised steel wire (SWA)
Outer Sheath: PVC Type ST1, black
Conductor Sizes: 1.5 / 2.5 / 4 mm²
Core Counts: 5 / 7 / 9 / 12 / 19 / 27 / 37 / 48 cores
Max. Conductor Temperature: +70°C
Operating Temperature: −30°C to +70°C (fixed); −5°C to +70°C (flexing)
Product Overview
Steel Wire Armoured (SWA) Control Cable — 1.5mm² & 2.5mm², 19 Core is a PVC insulated, PVC bedded, steel wire armoured, PVC sheathed multi-core control cable rated at 600/1000V (0.6/1kV), manufactured to MS 2103 and IEC 60502-1. The 19-core configuration is widely specified for PLC I/O marshalling, multi-point control panels, and complex instrumentation circuits where a single cable run must carry 19 individually identified control signals — replacing 19 separate unarmoured wires with one mechanically protected, organised, and easily routed cable assembly.
With 19 white PVC insulated cores numbered 1 to 19, this cable eliminates core identification ambiguity across the full length of the cable route — from the panel terminal block to the field device, every core number remains legible, reducing installation errors and future maintenance tracing time to a minimum. The steel wire armour layer provides simultaneous mechanical protection (impact, crush, rodent) and earth continuity (the armour can be bonded as the Circuit Protective Conductor), making SWA cable the preferred solution for fixed installation in industrial environments, outdoor routes, cable trenches, and direct burial applications where unarmoured cable would be unacceptable.
Available in conductor sizes 1.5 mm² (for signal and low-current control circuits, 7A continuous at 70°C) and 2.5 mm² (for higher current control duty and longer cable runs where voltage drop must be minimised), with the complete size range from 5 to 48 cores available within the same cable family.
19 Numbered Cores — One Cable Run
A single 19-core SWA cable replaces 19 individual control wires in one mechanically protected, traceable assembly. Sequential numbering 1–19 provides unambiguous identification from end to end — critical for multi-point control systems where individual signal tracing must be fast and error-free.
Steel Wire Armour as CPC
The galvanised steel wire armour serves dual function: mechanical protection and earth continuity. Bonding the armour at both cable ends provides the Circuit Protective Conductor (CPC) for the circuit — eliminating a separate earth core in most control cable applications and reducing the required conductor count.
MS 2103 / IEC 60502-1 Compliance
Dual-standard certification accepted across Southeast Asia, South Asia, the Middle East, and sub-Saharan Africa — markets where either the Malaysian standard (MS 2103) or IEC 60502-1 governs control cable procurement for utility, industrial, and infrastructure projects.
Direct Burial Without Conduit
The SWA mechanical protection level allows direct burial in ground and installation in concrete without additional conduit — eliminating the conduit material and installation labour cost for underground control cable routes between field equipment and control buildings.
1.5 mm² or 2.5 mm² — Application Matched
1.5 mm² is standard for low-current digital I/O, relay coil, and signal control circuits up to 10 A. 2.5 mm² is selected for higher current loads (up to 16 A), longer cable runs where voltage drop is a concern, or circuits driving solenoid valves and actuators with higher current demand.
−30°C to +70°C Operating Range
PVC insulation and sheath performance across the full temperature range from −30°C (outdoor cold climate fixed installation) to +70°C (maximum conductor temperature in industrial environments) — covering the broadest practical range of control cable installation conditions.
Technical Specifications
Construction & Electrical Parameters
| Standard | MS 2103 / IEC 60502-1 |
|---|---|
| Rated Voltage | 600/1000V (U₀/U = 0.6/1kV) |
| Conductor | Plain annealed stranded copper, Class 2 (IEC 60228) |
| Insulation | PVC Type PVC/A |
| Core Identification | White insulation with sequential black numbering (1 to n) |
| Inner Bedding | PVC Type ST1 |
| Armour | Galvanised steel wire (SWA) |
| Outer Sheath | PVC Type ST1, black |
| Conductor Sizes | 1.5 mm² / 2.5 mm² / 4 mm² |
| Core Counts Available | 5 / 7 / 9 / 12 / 19 / 27 / 37 / 48 cores |
| Max. Conductor Temperature | +70 °C (continuous) |
| Operating Temperature | −30 °C to +70 °C (fixed installation); −5 °C to +70 °C (flexing) |
| Min. Bending Radius | 4 × OD (fixed); 15 × OD (flexing) |
| Insulation Resistance | Min. 20 GΩ·cm |
| Test Voltage | 4,000 V AC |
| Breakdown Voltage | Min. 8,000 V |
| SWA as CPC | Yes — steel wire armour usable as Circuit Protective Conductor (earth) |
| Packaging | Export wooden drum; standard lengths 500 m / 1000 m; custom lengths available |
Full Parameter Table — SWA Armoured Control Cable (1.5 / 2.5 / 4 mm²)
| Cores | Cross-Section (mm²) | Conductor (No./mm) | Insulation Thickness (mm) | Bedding Thickness (mm) | Steel Wire Ø (mm) | Sheath Thickness (mm) | Overall Ø (mm) | Net Weight (kg/km) |
|---|---|---|---|---|---|---|---|---|
| 5 | 1.5 | 7/0.53 | 0.6 | 0.8 | 0.9 | 1.4 | 14.0 | 456 |
| 7 | 1.5 | 7/0.53 | 0.6 | 0.8 | 0.9 | 1.4 | 14.9 | 467 |
| 9 | 1.5 | 7/0.53 | 0.6 | 0.8 | 1.25 | 1.5 | 18.1 | 693 |
| 12 | 1.5 | 7/0.53 | 0.6 | 0.8 | 1.25 | 1.5 | 19.1 | 784 |
| 19 | 1.5 | 7/0.53 | 0.6 | 0.8 | 1.25 | 1.6 | 21.8 | 1027 |
| 27 | 1.5 | 7/0.53 | 0.6 | 1.0 | 1.6 | 1.7 | 26.4 | 1512 |
| 37 | 1.5 | 7/0.53 | 0.6 | 1.0 | 1.6 | 1.8 | 30.1 | 1848 |
| 48 | 1.5 | 7/0.53 | 0.6 | 1.0 | 1.6 | 1.9 | 34.6 | 2246 |
| 5 | 2.5 | 7/0.67 | 0.7 | 0.8 | 0.9 | 1.5 | 15.9 | 516 |
| 7 | 2.5 | 7/0.67 | 0.7 | 0.8 | 1.25 | 1.5 | 17.6 | 707 |
| 9 | 2.5 | 7/0.67 | 0.7 | 0.8 | 1.25 | 1.6 | 20.6 | 887 |
| 12 | 2.5 | 7/0.67 | 0.7 | 0.8 | 1.25 | 1.6 | 21.9 | 1019 |
| 19 | 2.5 | 7/0.67 | 0.7 | 1.0 | 1.6 | 1.7 | 26.2 | 1550 |
| 27 | 2.5 | 7/0.67 | 0.7 | 1.0 | 1.6 | 1.8 | 30.4 | 1994 |
| 37 | 2.5 | 7/0.67 | 0.7 | 1.2 | 1.6 | 1.9 | 35.0 | 2508 |
| 48 | 2.5 | 7/0.67 | 0.7 | 1.2 | 2.0 | 2.1 | 41.2 | 3365 |
| 5 | 4 | 7/0.85 | 0.8 | 0.8 | 1.25 | 1.5 | 18.5 | 766 |
| 7 | 4 | 7/0.85 | 0.8 | 0.8 | 1.25 | 1.6 | 20.0 | 915 |
| 9 | 4 | 7/0.85 | 0.8 | 1.0 | 1.6 | 1.7 | 24.6 | 1329 |
| 12 | 4 | 7/0.85 | 0.8 | 1.0 | 1.6 | 1.7 | 26.2 | 1535 |
| 19 | 4 | 7/0.85 | 0.8 | 1.0 | 1.6 | 1.8 | 30.0 | 2052 |
Key Features & Technical Advantages
19 Cores — PLC I/O & Marshalling Standard
19-core SWA cable is a standard specification for PLC I/O marshalling panels and DCS field junction boxes — a 19-core cable carries a full module's worth of digital I/O in a single mechanically protected run. Using one 19-core SWA cable instead of 19 individual wires reduces cable route fill, tray congestion, and installation time proportionally.
Numbered Core Tracing — Lifetime Benefit
Black sequential numbering on white insulation remains readable throughout the full cable service life — 20, 30, or 40 years after installation. When a fault develops or a control circuit modification is needed, numbered cores eliminate the need to trace conductors physically from end to end, reducing maintenance intervention time from hours to minutes.
Armour Bonding — Simplified Earth Design
The steel wire armour, when bonded to earth at both termination points per BS 7671 / IEC 60364 requirements, provides a continuous low-impedance earth path throughout the cable length — eliminating the need for a separate earthing conductor in the majority of control circuit installations and simplifying the overall earth design of the installation.
High Insulation Resistance for Signal Integrity
The minimum 20 GΩ·cm insulation resistance (per MS 2103/IEC 60502-1) ensures negligible cross-talk between adjacent cores within the 19-core assembly — critical for low-level control signals where inter-core leakage current would cause erroneous relay operation, measurement drift, or spurious PLC input triggering in safety-critical control circuits.
4 kV Test / 8 kV Breakdown
The 4,000 V AC test voltage and minimum 8,000 V breakdown voltage provide substantial safety margins above the 1,000 V working voltage — ensuring insulation integrity is maintained under transient overvoltages from switching operations, motor starts, and lightning-induced surges on control circuits in industrial environments.
Full SWA Family — 5 to 48 Cores
The 19-core specification is part of the complete SWA armoured control cable family covering 5/7/9/12/19/27/37/48 cores in 1.5 mm², 2.5 mm², and 4 mm². Multiple different core count cables can be specified from a single supplier using the same construction standard — simplifying procurement, testing, and documentation for complex multi-cable control system installations.
Certifications & Standards
Typical Applications
PLC I/O Marshalling
Single 19-core SWA run per PLC I/O module — replaces 19 individual control wires with one organised, armoured, easily traced cable between field junction boxes and control panels.
Motor Control Centres (MCC)
Multi-core control wiring between MCC cubicles and field motor starters, VFDs, and soft-starters — 19-core carries start/stop, feedback, speed reference, and fault signals in a single armoured run.
Substation Secondary Wiring
Protection relay, metering, and control circuits between outdoor switchgear and substation control buildings — SWA direct burial capability eliminates the need for cable conduit in underground secondary wiring routes.
Process Plant Control
Instrumentation and control wiring in chemical, petrochemical, water treatment, and food processing plants — armour provides protection in pipe rack environments where mechanical damage risk is significant.
Field Junction Boxes
Connection from multi-point field junction boxes to central control rooms — 19-core SWA carries all field device signals in one cable, simplifying cable scheduling and route planning on large process sites.
Building Management Systems
BMS, HVAC control, and fire alarm multi-point control wiring in commercial buildings — 19-core SWA for main control runs from building services plant rooms to central BMS panels.
Railway & Transport Infrastructure
Signalling and control cable for railway trackside equipment, level crossings, tunnel control systems, and airport airfield lighting control — direct burial and armour protection required.
Utility Distribution Projects
SCADA and telecontrol cable for distribution substation remote terminal units (RTU) — 19-core SWA for multi-point I/O connection between outdoor equipment and communication panels across Southeast Asian and Commonwealth utility networks.
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Frequently Asked Questions
As a factory, we offer flexible MOQ depending on the cable type. For standard stock items, MOQ is low; for customized specifications, please contact our sales team for a detailed quote.
Yes, Qiangli cables are manufactured in compliance with international standards such as UL, CE, TUV, and VDE. We provide full test reports and certificates upon request.
Absolutely. We have a dedicated R&D team that can customize cable structure, material, color, and printing to meet your specific project needs.
For standard products, lead time is usually 7-15 days. For large-scale project orders or customized products, it typically ranges from 20 to 30 days.
Yes, we provide free samples for most standard cables. You only need to cover the international courier costs. Contact us to arrange your sample shipment.