Product Number: 3105ELZ

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

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 Eca

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    Capability
3105ELZ
  • 3105ELZ
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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) 0.6 mm (0.024 in) 6.6 mm (0.26 in)

Overall Cable Diameter (Nominal)

6.60 mm (0.260 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
-20°C To +70°C -10°C To +70°C -20°C To +70°C

Bend Radius

Stationary Min. Installation Min.
33 mm (1.3 in) 66 mm (2.6 in)

Max. Pull Tension

240 N (54 lbf)

Bulk Cable Weight

54 kg/km (36 lbs/1000ft)

Environmental Suitability

Indoor - Euroclass Eca, Indoor, Non-Halogenated

Flammability / Reaction to Fire

IEC 60332-1-2

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, 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). The minimum business quantity to offer is 6km for the first order. This product will have Gray as standard color and 305mt 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. Please liaise with your Belden representative for confirmation.

Update and Revision

Revision Number: 0.8 Revision Date: 07-24-2025

Update and Revision

Revision Number: 0.8 Revision Date: 07-24-2025


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Resources

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Compliance Documentation