Mixed-Gauge 3-Core Cable (0.1 + 1×0.3mm²) for Signal and Power

Non-standard conductor sizing creates procurement bottlenecks. Most distributors stock only standard combinations. That pushes lead times out by 8 to 12 weeks when a PLC upgrade or sensor retrofit requires something specific. Worse, compromises in conductor matching introduce signal drift and noise — problems only caught during final commissioning, when rework costs multiply.

This factory-wound 3-core mixed-gauge cable solves that mismatch. It pairs two 0.1mm² signal conductors with one 0.3mm² power or return leg in a single jacket. The result is one pull instead of two, reduced cabinet clutter, and cleaner signal paths in tight DIN rail channels. Runs are continuous up to 500m per spool, with tolerances held to ±0.005mm² on cross-section. That consistency matters when you are validating against loop resistance calculations.

Core Advantages

Mixed Conductor Geometry: 2× Signal + 1× Power

Two 0.1mm² conductors run balanced low-current signals. One 0.3mm² conductor carries the higher current return or DC supply for a remote sensor. This topology means one cable replaces a dual-cable bundle.
The immediate effect is 40% less tray fill. Fewer cable glands and cable ties. Less pulling time per run. On a multi-drop Modbus installation with 50 field devices, that reduction in material and labour hits the project budget directly. It also simplifies spares inventory to a single SKU per length — a detail your warehouse team will appreciate.

Tight Cross-Section Tolerance: ±0.005mm²

Resistance deviation between conductors is held below 2% across any production batch. That is not an estimate. It comes from in-line eddy current testing on every draw.
Why does 0.005mm² matter? In a 4–20mA loop, a 1Ω resistance offset shifts the sensed value by 20μA. Across 10 sensors, that cascade of offset masks a real process drift. Our match reduces that offset to near-zero before installation. Commissioning checks pass faster. Loop tuning holds longer.

High-Strand-Count Annealed Copper

Each conductor uses 7-strand bundled construction (Class 2 per IEC 60228) from ETP-grade copper, oxygen-content-controlled during drawing.
Fine stranding resists work-hardening cracks where cables flex into moving machine guards or robot dress packs. Stranded copper also loads faster into screw-clamp terminals — no wicking, no stray filaments. Panels build faster. Field re-terminations are forgiving, which reduces callbacks.

Composite Jacket: PVC + Nylon Over-Sheath

The inner PVC provides dielectric stability. The extruded nylon outer layer supplies the mechanical resistance necessary for conduit pulls and machine-tool troughs.
Pull-through abrasion is the silent failure mode. A nicked jacket wicks moisture by capillary action into the conductor bundle. Corrosion starts months before the fault appears. The nylon layer shifts that risk threshold upward — a margin that converts directly into extended warranty confidence and fewer service dispatches.

Technical Data

Custom lengths, colour-coded jackets, and shielded variants are available on request. Contact engineering with your GA drawing for a matched quote.

Heavy-Duty Applications

• Industrial automation cabinets. Feeds remote I/O blocks and sensor hubs where low-current signal pairs and a heavier DC common must run in the same multicore. Fewer cable routes mean smaller tray widths and neater panduit fill.
• HVAC damper actuators and VAV controllers. These building-management retrofits demand compact cable that routes easily through existing 20mm conduit alongside legacy wiring. Mixed-gauge construction provides 24V AC power and 0–10V command on three cores, no extra pull required.
• OEM machine-tool umbilical looms. High-flex routing in cable carriers benefits from fine-strand copper and the abrasion-resistant nylon sheath. The two signal cores carry limit-switch logic while the 0.3mm² line returns solenoid common.
• Weighbridge and load-cell terminations. Precision analog signals require stable, matched-resistance paths. The ±0.005mm² tolerance preserves bridge excitation and sense-line symmetry over cable runs up to 50m.
• Security and access-control gate arms. Buried sensor loops and vehicle detector cards often require a local power line and two signal returns. This single-jacket cable withstands the alkaline environment of concrete-embedded conduit without jacket degradation.

Quality & Compliance

• ✅ IEC 60228 — Class 2 stranded conductor construction verified per lot
• ✅ IEC 60332-1-2 — Flame retardant single-core and multicore cable test
• ✅ EN 50575 — Construction Products Regulation for cables (CPR) with Euroclass documentation available on request
• ✅ RoHS 3 (EU 2015/863) — All materials including PVC compound and nylon over-sheath confirmed free of restricted phthalates and heavy metals
• ✅ CE marking — Applied under Low Voltage Directive 2014/35/EU
• ✅ ISO 9001:2015 — Manufacturing traceability from copper ingot heat number to final spool serial

Lot-specific test certificates (3.1 per EN 10204) ship with every order. Plots of resistance imbalance across the spool length are included for orders over 1000m.

Common Engineering Queries

Can you supply a shielded version for VFD-heavy environments?
Yes. An overall aluminium/polyester tape shield with a 7-strand tinned-copper drain wire can be added. Nominal outer diameter increases to 4.1mm. Specify “ST” suffix when requesting a quote. Recommended where the cable shares a tray with VFD motor leads or runs within 300mm of a variable-frequency drive chassis.

What is the actual deliverable length tolerance per spool?
Standard commercial tolerance is -0% / +3% on ordered metre marks. So a 500m spool carries a minimum of 500m of live conductor, and may include up to 515m. We mark the true length on the reel flange. We never short-ship — field cuts are expensive and a 10-metre shortfall on a final pull can stall a handover.

Does the nylon sheath embrittle in outdoor UV exposure?
Untreated nylon exposed to direct, sustained sunlight will lose tensile elongation over multiple seasons. For outdoor cable tray or exposed solar-farm routing, we add a carbon-black UV stabilisation package to the nylon compound. Add suffix “-UV” to the part code. Test data per ISO 4892-2 (Xenon arc) is available for your materials engineer.

Get a Project Quote

Send your routing diagram, length break-up, and any added test requirements to [Email] or call [Phone]. We respond with a dimensional drawing, resistance batch data, and a delivery schedule within one working day.

Most standard spool sizes ship from stock. Custom combinations — shielded or UV-stabilised — typically dispatch within 10–14 days. For planned shutdowns or new machine builds, we reserve dedicated production slots to lock your delivery date.