EIA485

Belden EIA-485 Cables Provide Superior Electrical Performance in Plenum Environments – Without the Use of Conduit


EIA-485 (formerly RS-485 or RS485) is an OSI model physical layer electrical specification of a two-wire, [1] half-duplex, multipoint serial connection. The standard specifies a differential form of signaling. The difference between the wires’ voltages is what conveys the data. One polarity of voltage indicates a logic 1 level, the reverse polarity indicates a logic 0 level. The difference of potential must be at least 0.2 volts for valid operation, but any applied voltages between +12V and -7V will allow correct operation of the receiver.

Using a EIA-485 physical interface, the maximum distance achieved would be 4,000 ft. at 100kbps. A maximum of 247 nodes is possible.

EIA-485 PLTC Cable -22 AWG Stranded (7×30) Tinned Copper Conductors, Overall Beldfoil (100% Coverage) + TC Braid Shield (90% Coverage), Drain Wire – Non-plenum
3105A
1-Pair, Datalene Insulation, Black UV-resistant PVC Jacket, 300V
3106A
1.5-Pair, Datalene Insulation, Black UV-resistant PVC Jacket, 300V
3107A
2-Pair, Datalene Insulation, Black UV-resistant PVC Jacket, 300V
3108A
3-Pair, Datalene Insulation, Black UV-resistant PVC Jacket, 300V
3109A
4-Pair, Datalene Insulation, Black UV-resistant PVC Jacket, 300V

EIA-485 Cable -24 AWG Stranded (7×32) Tinned Copper Conductors, Overall Beldfoil® (100% Coverage) + TC Braid Shield (90% Coverage) – Non-plenum
9841
1-Pair, Polyethylene Insulation, Chrome PVC Jacket, Drain Wire, UL AWM Style 2919, 30V 80°C, DMX 512
9842
2-Pair, Polyethylene Insulation, Chrome PVC Jacket, Drain Wire, UL AWM Style 2919, 30V 80°C, DMX 512
9843
3-Pair, Polyethylene Insulation, Chrome PVC Jacket, Drain Wire, UL AWM Style 2919, 30V 80°C, DMX 512
9844
4-Pair, Polyethylene Insulation, Chrome PVC Jacket, Drain Wire, UL AWM Style 2919, 30V 80°C, DMX 512

EIA-485 Cable -24 AWG Stranded (7×32) Tinned Copper Conductors, Overall Beldfoil (100% Coverage) + TC Braid Shield (90% Coverage) – Plenum
82841
1-Pair, Foam FEP Insulation, Natural Flammarest® Jacket, Drain Wire, 300V RMS
82842
2-Pair, Foam FEP Insulation, Natural Flammarest® Jacket, Drain Wire, 300V RMS
89841
1-Pair, Foam FEP Insulation, Red FEP Jacket, Drain Wire, 300V RMS
89842
2-Pair, Foam FEP Insulation, Red FEP Jacket, Drain Wire, 300V RMS

Belden Infinity Flexible Automation Cable -24 AWG Stranded (41×40) Bare Copper Conductors, Twisted Pairs, Overall Beldfoil (100% Coverage) + TC Braid Shield (85% Coverage)
7200A
1-Pair, Foam Polyethylene Insulation with Skin, Green Oil-resistant PVC Jacket, 300V 60°C
7201A
2-Pair, Foam Polyethylene Insulation with Skin, Green Oil-resistant PVC Jacket, 300V 60°C
7202A
3-Pair, Foam Polyethylene Insulation with Skin, Green Oil-resistant PVC Jacket, 300V 60°C
7203A
1-Pair, Foam Polyethylene Insulation with Skin, Green Oil-resistant PVC Jacket, 300V 60°C
7206A
1-Pair, Foam Polyethylene Insulation with Skin, Green Oil-resistant PVC Jacket, 300V 60°C

Custom cables are available upon request which can utilize any number of construction features such as:

  • Armoring: Aluminum Interlock, Steel Interlock, and Continuous Corrugated Aluminum
  • Armor Tapes: Corrugated Copper, Aluminum, and Steel
  • Jackets: PVC, CPE, LDPE, TPE, HDPE, Fluorocopolymer, Oil Res II, Low Smoke Zero Halogen (LSZH), Haloarrest®, and Polyurethane
  • Shielding: Overall Beldfoil®, Duofoil®, TC Braid, TC Double Braid, Individual Beldfoil Copper Tape Shields, and “French Braid”
  • Insulations: Datalene®, XLPE, FEP, Polypropylene, Foam FEP, HDPE, PVC, TPE, and PVC-Nylon
  • Conductors: Solid BC, Stranded BC, Solid Bare Copper-covered Steel, and Stranded TC