Product Hierarchy
Product Hierarchy

3105ENH - RS-485, 1PR #22 Str TC, PO ins, F/B, LSNH Jkt,


RS-485, 1 Pair AWG 22 Tinned Copper - Stranded, Polyolefin (PO, PE, PP) insulation, Foil + Braid(s) shielding, LSZH / FRNC jacket ,

Product Overview

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

Construction Details

Conductor
ElementNo. of ElementsSizeStrandingMaterial
Pair(s)122 AWG7x30TC - Tinned Copper
Insulation
ElementMaterialNom. ThicknessNom. Insulation DiameterColor 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 TypeMaterialCoverageDrainwire Type
TapeBi-Laminate (Alum+Poly)100%22 AWG (7x30) TC
BraidTinned Copper (TC)65%
Outer Jacket
MaterialNom. ThicknessNom. Diameter
LSZH - Low Smoke Zero Halogen (Flame Retardant)0.9 mm (0.035 in)7.2 mm (0.28 in)
Overall Cable Diameter (Nominal): 7.20 mm (0.283 in)

Electrical Characteristics

Electricals
ElementNom. Conductor DCRNom. Capacitance Cond-to-CondNom. Capacitance Cond-to-Other (Conds + Shield)Nom. Characteristic ImpedenceNom. 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/m120 Ohm78%2.7 Amps per Conductor
Nom. Outer Shield DCR: 9.2 Ohm/km (2.8 Ohm/1000ft)
High Frequency (Nominal/Typical)
ElementFrequency [MHz]Nom. Insertion Loss (Attenuation)
Pair(s)11.64 dB/100m (0.500 dB/100ft)
Voltage
Voltage Rating
300 V

Mechanical Characteristics

Temperature
OperatingInstallationStorage
-45°C To +80°C-15°C To +80°C-45°C To +80°C
Bend Radius
Stationary Min.Installation Min.
36 mm (1.4 in)72 mm (2.8 in)
Max. Pull Tension: 240 N (54 lbf)
Bulk Cable Weight: 58 kg/km (39 lbs/1000ft)

Standards and Compliance

Environmental Suitability: Indoor - Euroclass Eca, Indoor, Non-Halogenated, Sunlight Resistance, Oil Resistance
Flammability / Reaction to Fire: IEC 60332-1-2, IEC 60332-3-24
CPR Compliance: CPR Euroclass: Eca
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
UK Regulation Compliance: UKCA Mark
Other Standard Compliance(s): DMX-512

History

Update and Revision: Revision Number: 0.279 Revision Date: 04-08-2025

Part Numbers

Variants
Item #ColorPutup TypeLengthEAN
3105ENH.00305BlackReel305 m8719605005878
Date: 2014-07-09
Belden Cables, Wires and Accessories for Industrial Applications_Original_87238-1.pdf
Belden-NPI-RS-485-Product-Bulletin-2022-04.pdf
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