Signal Failure Is a Cost You Can Avoid on the Factory Floor

A single intermittent connection. A voltage drop you can’t pinpoint. The control system flags a sensor fault, and the line stops. Diagnostics take 30 minutes. Production loses thousands. In automated environments where every pulse, position, and temperature reading matters, the conductor that carries those signals becomes a structural risk. Most downtime traced to sensor errors isn’t a device problem. It’s a cabling problem.

This 2.5mm 3-core 0.1mm² sensor cable is built for that exact failure mode. Three tinned-copper conductors, each with a 0.1mm² cross-section, housed in a compact 2.5mm outer jacket. The design prioritizes signal integrity over short distances, physical flexibility in tight cable trays, and a factory price that keeps BOM costs under control without compromising on the copper specification you actually need.

Three conductors let you wire standard PNP or NPN sensor configurations. One cable covers power, ground, and signal. The 0.1mm² gauge is deliberate. For milliamp-level sensor circuits, heavier copper adds cost and bulk with zero electrical benefit. This diameter balances current capacity for typical 4-20mA loops and discrete 24V sensor signals against the mechanical demands of control cabinet wiring and drag-chain-adjacent routing.

What This Cable Solves on Your System

Tinned Copper Conductors — Not Bare Copper
Bare copper oxidizes. The oxide layer increases contact resistance at terminal blocks over months of operation, especially in humid or mildly corrosive atmospheres. Tinning creates a barrier. The result is a stable low-resistance termination that doesn’t degrade between maintenance intervals. For a panel builder, this means fewer callbacks for “ghost” sensor faults traced to oxidized screw terminals.

Compact 2.5mm Outer Diameter
Multi-core sensor cables often carry unnecessary jacket bulk. A 2.5mm OD lets you pack more conductors into 20mm conduit, through cable glands, or along cable chains where space is tight. The immediate advantage is simpler routing in retrofit jobs and denser control panels. Less jacket material also means a smaller bend radius. Installers work faster in confined cabinets.

3-Core Flat or Round Configuration — No Extra Cores, No Waste
Three cores give you exactly what a typical 3-wire DC sensor requires. You’re not paying for an unused spare conductor. You’re not managing a thicker cable with cores that get folded back and taped off. The bill of materials matches the electrical design one-to-one. Procurement stays lean.

100m or 500m Factory-Reel Cutting
Standard put-ups match real project volumes. Short reels for maintenance teams. Bulk reels for OEM panel builders. Every meter is factory-spooled with consistent lay length and tension control, which prevents internal conductor damage that you’d only discover during commissioning. Ask for custom lengths. We cut to order.

Straightforward Copper Grade — No Ambiguity
The conductor spec is explicit: fine-stranded tinned copper, 0.1mm² per core. No recycled-content surprises that show up as brittleness on stripping. No hidden aluminum variants. The material cert is available with each batch. If your incoming QA requires traceability, we provide it.

Technical Specifications

Note: Values listed are representative. Full data sheet with batch-specific test reports is available from the factory on request.

Where This Cable Is Installed

• PLC and RTU I/O Wiring. Carrying 24V discrete signals and 4-20mA analog loops from field sensors to controller terminals inside marshalling cabinets.
• Proximity and Photoelectric Sensor Connections. The M8 or M12 connector on the sensor head often terminates to this cable gauge. Three cores, no unused wires, simple pinout mapping.
• HVAC Building Management Systems. Temperature sensors, duct pressure transmitters, and humidity probes in commercial facilities where conduit fill ratios and plenum routing favor a small-diameter multi-core.
• Packaging and Conveyor Control. High-vibration environments. The fine stranding and tinned copper resist work-hardening and breakage better than solid conductors in cable tracks subjected to constant micro-motion.
• Test and Measurement Rigs. Laboratories and production test stands that rewire frequently. A reel of this cable on the bench lets technicians build custom sensor harnesses with the right number of cores at minimal cost per meter.

Compliance and Quality Framework

• ✅ CE Marking — Conforms to Low Voltage Directive 2014/35/EU. The cable meets electrical safety requirements for products placed on the European market.
• ✅ RoHS Compliant — All materials, including PVC compounds and tinned copper, meet Directive 2011/65/EU restriction of hazardous substances.
• ✅ IEC 60228 Conductor Reference — Conductor construction aligns with Class 5 flexible copper requirements where applicable to this cross-section, ensuring consistency in resistance values.
• ✅ Flame Retardant Grade — Standard PVC jacket meets VW-1 vertical flame propagation test. LSZH jacket option available for projects requiring low smoke and zero halogen performance in enclosed public spaces.
• ✅ Factory ISO 9001 Production — Manufacturing, spooling, and quality checks occur under a certified quality management system. Inline spark testing at 3 kV AC detects insulation faults before the cable leaves the extrusion line.

Questions Engineers Ask Before Ordering

Can this cable carry a 4-20mA loop over 200 meters?
The conductor resistance is approximately 195 Ω/km at 20°C. For a 200-meter run, the loop adds roughly 39 Ω of series resistance (one-way) plus the return path, so about 78 Ω total. At 20 mA, the voltage drop across the cable is roughly 1.56 V. This is well within the typical 24V supply margin for most transmitters. However, check the minimum operating voltage of your specific sensor. If the transmitter specifies 12V minimum and your supply is a regulated 24V, you have ample headroom. For distances beyond 300 meters, consider stepping up the conductor cross-section.

We need sensor cable for an outdoor installation with UV exposure. Is the standard PVC jacket suitable?
Standard PVC will degrade under prolonged direct sunlight. The plasticizer loss leads to cracking. For outdoor or exposed runs, specify the UV-resistant PVC compound or the LSZH option with carbon-black pigmentation. Both resist embrittlement from UV radiation. We can quote either version against your project’s solar exposure and expected service life.

What are the actual lead times on 500m reels for a repeat OEM order?
For standard black PVC 3-core sensor cable in 0.1mm², we hold buffer stock of finished reels. A standard 500m reel typically ships within 5 working days of order confirmation. Custom jacket colors or non-standard put-ups add 10 to 15 working days depending on the extrusion schedule. We confirm the exact ex-works date before you issue the purchase order. No surprises.

Get a Quote and a Sample Reel

Specify the cable, confirm the reel length, and check the price. We respond to RFQs within the same working day. If you need to physically evaluate the stripping behavior, solderability, or jacket marking durability, ask for a free 3-meter sample section. You’ll receive it by courier with a full material cert inside.

Use the contact form or email your enquiry directly. Mention the 2.5mm 3-core 0.1mm² sensor cable and your expected annual usage. We’ll return a volume-tiered quotation that reflects your ordering pattern, not a one-time spot price.