Product Number: 3105ELW

RS-485, 1 Pr #22 Str TC, FoamPE ins, F/B, LSZH Jkt, Cca

RS-485, 1 Pair, 22 AWG stranded (7x32) Tinned Copper conductors, Foamed Polyethylene insulation, twisted pairs, overall Beldfoil® (100% coverage) + Tinned Copper braid shield (65% coverage), 22 AWG stranded Tinned Copper drain wire, LSZH jacket, CPR Cca

  • Availability:
    Global
  • Status:
    Capability
3105ELW
  • 3105ELW
1 of 1

Specifications

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Suitable Applications

Instrumentation and computer cable. For EIA RS-485 transmissions applications

Conductor

Element No. of Elements Size Stranding Material
Pair(s) 1 22 AWG 7x30 TC - Tinned Copper

Insulation

Element Material Nom. Thickness Nom. Insulation Diameter Color Code
Pair(s) PE - Polyethylene (Foam) 0.72 mm (0.028 in) 2.2 mm (0.087 in) White & Blue, Blue & White

Outer Shield

Shield Type Material Coverage Drainwire Type
Tape Bi-Laminate (Alum+Poly) 100% 22 AWG (7x30) TC
Braid Tinned Copper (TC) 65%

Outer Jacket

Material Nom. Thickness Nom. Diameter
LSZH - Low Smoke Zero Halogen (Flame Retardant) 0.9 mm (0.035 in) 7.4 mm (0.29 in)

Overall Cable Diameter (Nominal)

7.40 mm (0.291 in)

Electricals

Element Nom. Conductor DCR Nom. Capacitance Cond-to-Cond Nom. Capacitance Cond-to-Other (Conds + Shield) Nom. Characteristic Impedence Nom. Velocity of Prop. Max. Current
Pair(s) 48.2 Ohm/km (14.7 Ohm/1000ft) 36.1 pF/m (11.0 pF/ft) 68.6 pF/m 120 Ohm 78% 2.7 Amps per Conductor

Nom. Outer Shield DCR

9.2 Ohm/km (2.8 Ohm/1000ft)

High Frequency (Nominal/Typical)

Element Frequency [MHz] Nom. Insertion Loss (Attenuation)
Pair(s) 1 1.64 dB/100m (0.500 dB/100ft)

Voltage

Voltage Rating
300 V

Temperature

Operating Installation Storage
-45°C To +80°C -15°C To +80°C -45°C To +80°C

Bend Radius

Stationary Min. Installation Min.
37 mm (1.5 in) 74 mm (2.9 in)

Max. Pull Tension

240 N (54 lbf)

Bulk Cable Weight

65 kg/km (44 lbs/1000ft)

Environmental Suitability

Indoor - Euroclass Cca, Indoor, Non-Halogenated, Sunlight Resistance, Oil Resistance

Flammability / Reaction to Fire

IEC 60332-1-2

CPR Compliance

CPR Euroclass: Cca-s1,d1,a1

ISO/IEC Compliance

IEC 61034-2 - Smoke Density Min Transmittance = 60%

CENELEC Compliance

EN 50290-2-20

European Halogen Free Standards

IEC 62821-1 Halogen Free Compliance = Yes, IEC 60754-1 - Halogen Amount = Zero, IEC 60754-2 - Halogen Acid Gas Amount - Max. Conductivity = 2.5 µS/mm, IEC 60754-2 - Halogen Acid Gas Amount - Min. pH = 4.3

European Directive Compliance

EU CE Mark, EU Directive 2015/863/EU (RoHS 2 amendment), EU Directive 2011/65/EU (RoHS 2)

UK Regulation Compliance

UKCA Mark

Other Standard Compliance(s)

DMX-512

Notes

This is a preliminary Technical Design Specification (TDS) which is subject to modification throughout the prototyping phase. The minimum business quantity to offer is 3km for the first order. This product will have Black as standard color and 305mt or 500mt as standard put-ups. Additional options for colors and put-ups are available on special request. The estimated production lead time for the first order will be similar to the production lead time of 3105ENH plus extra 6-7 weeks. Please liaise with your Belden representative for confirmation.

Update and Revision

Revision Number: 0.39 Revision Date: 07-21-2025

Update and Revision

Revision Number: 0.39 Revision Date: 07-21-2025


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Resources

Product Bulletins
Catalogs
Brochures
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Resources

Product Bulletins
Catalogs
Brochures
Compliance Documentation