RS485 Data Cable (Shielded Twisted Pair, 120 Ω)

Shielded twisted-pair cable with 120 Ω impedance for RS-485, Modbus RTU, Profibus-type and BMS communication. Foamed PE insulation, tight pair twisting and foil-plus-braid shielding keep data clean over long distances in factories, energy meters, HVAC and building automation.

120 Ω impedance matched to RS-485 transceivers
Low capacitance for long bus lengths and higher baud rates
Foil + braid screen with drain wire against EMI
Equivalent to common 3105A / 9842-type constructions

TIA/EIA-485EN 50288-7RoHS / REACH

WhatsApp Us

Factory direct priceSamples availableOEM / custom brandReply within 12 hours

MOQ: 500 m per size

Overview

Key Features

120 Ω impedance matched to RS-485 transceivers

Low capacitance for long bus lengths and higher baud rates

Foil + braid screen with drain wire against EMI

Equivalent to common 3105A / 9842-type constructions

Cable Structure

#	Layer	Material / Description
1	Conductor	Tinned copper, 7-strand or fine-stranded
2	Insulation	Physically foamed PE
3	Twisted pairs	Colour-coded twisted pairs
4	Screen / shield	Al-foil + tinned copper braid
5	Drain wire	Tinned copper drain wire
6	Outer sheath	PVC or LSZH (low smoke zero halogen)

Technical Specifications

Parameter	Value
Types / models	1×2×22 AWG, 2×2×22 AWG, 1×2×24 AWG (3105A / 9842 eq.)
Characteristic impedance	120 Ω
Capacitance	≈ 40 pF/m
Conductor	Tinned copper, 7-strand or fine-stranded
Shielding	Al-foil + tinned copper braid
Rated voltage	300 V
Operating temperature	-20 °C … +70 °C
Jacket	PVC or LSZH (low smoke zero halogen)
Colours	Grey or black
Standard length	305 m (1000 ft) pull box or wooden reel

Specifications above are typical values. Other sizes, cores, colours and standards are available on request.

Standards & Certifications

TIA/EIA-485RS-485 balanced data transmission

EN 50288-7Instrumentation and control cables

RoHS / REACHEnvironmental compliance

Application Scenarios

Building automation (BMS)

RS-485 / Modbus links for HVAC, energy meters, lighting control and access systems.

Industrial automation & control

PLC, sensors, instruments, drives and control panels where signal integrity matters.

Industrial plants

Power supply to motors, machines and production lines in factories, workshops and mines.

Packaging & Shipping

Bulk cable is packed in 305 m (1000 ft) easy-pull boxes or on wooden reels; patch cords are individually bagged with labels and packed in cartons. Custom printed boxes, labels and barcodes with your brand are available for OEM orders. Cartons are palletised and loaded into 20GP/40HQ containers at Ningbo or Shanghai port. Samples and small orders can be shipped by express (DHL, FedEx, UPS) or air freight.

OEM packing FOB · CFR · CIF · DDP Test report MOQ: 500 m per size

FAQ

What standards does RS485 Data Cable (Shielded Twisted Pair, 120 Ω) comply with?

TKG CHINA manufactures RS485 Data Cable (Shielded Twisted Pair, 120 Ω) in accordance with TIA/EIA-485, EN 50288-7 and RoHS / REACH. A factory test report is supplied with every shipment, and third-party inspection can be arranged on request.

Can I order RS485 Data Cable (Shielded Twisted Pair, 120 Ω) with custom specifications or my own brand?

Yes. Conductor size, number of cores, colours, sheath printing, length and packaging can all be customised. OEM printing with your brand, labels and cartons is available.

What is the MOQ and lead time for RS485 Data Cable (Shielded Twisted Pair, 120 Ω)?

The MOQ is usually 500 m per size. Standard specifications ship within 7–20 days after deposit, and samples can be prepared within a few days.

How do I get a price for RS485 Data Cable (Shielded Twisted Pair, 120 Ω)?

Send us the specification, quantity and destination port through the inquiry form or WhatsApp. Our sales engineer will reply with a quotation and datasheet within 12 hours.

Get a Quote for This Product

Send us your cable list or drawings. Our engineers will reply with the best solution and price within 12 hours.