Belden 9841 RS485 Modbus 1 Pair Communication Cable

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Belden 9841 RS485 Modbus 1 Pair Communication Cable

Price 78.0 INR/ Meter

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Belden 9841 RS485 Modbus 1 Pair Communication Cable Specification

Core Number
1 pair

Armored Material
Not armored

Number of Conductor
2 (1 pair)

Features
Low capacitance, Twisted pair, Foil shielded, Suitable for RS485/Modbus communication, High noise immunity

Dielectiric Strength
2000V AC for 1 minute

Tensile Strength
122 N (approx.)

Diameter
6.20 mm (outer)

Insulation
Polyethylene (PE)

Rated Temperature
-20C to +60C

Cable Type
Twisted pair, shielded communication cable

Operating Temperature
-20C to +60C

Usage & Applications
RS485/Modbus networks, industrial control, data transmission

Weight
31 kg/km (approx.)

Install Type
Fixed (not for continuous flexing)

Impedance
120 Ohms (nominal)

Conductor Shape
Round

Conductor Type
Solid

Core Material
Tinned Copper

Product Type
Communication Cable

Length
Available in various lengths (per reel or customized)

Voltage
300 V (Max)

Insulation Material
Polyethylene (PE)

Application
Data acquisition, RS485/Modbus communication, Industrial automation, Instrumentation

Conductor Material
Tinned Copper

Jacket Material
PVC (Polyvinyl Chloride)

Storage Temperature
-40C to +75C

Connector Color
Not applicable (bare cable)

Shield Material
Aluminum/polyester foil + drain wire

Jacket Color
Gray

Dimension (L*W*H)
Depends on cable length; outer diameter 6.20 mm approx.

Color
Gray

Material
Tinned Copper, PE Insulation, Aluminum/Polyester Shield, PVC Jacket

Size
20 AWG (7/0.32 mm)

Resistance
16.4 Ohms/km

Flame Test
Passed FT4/CMR

Rip Cord
Included for easy stripping

Maximum Pull Tension
25 lbs

Shield Coverage
100% aluminum/polyester with drain wire

Capacitance
12 pF/ft between conductors

Packing
Spool packing

Voltage Rating
300V RMS Max

Belden 9841 RS485 Modbus 1 Pair Communication Cable Trade Information

Minimum Order Quantity
100 Meter

Main Domestic Market
All India

About Belden 9841 RS485 Modbus 1 Pair Communication Cable

RS485, 1 Pr 24 Str TC, PE Ins, OS+TC Brd, PVC Jkt, CM RS-485, 1 Pair 24AWG (7x32) Tinned Copper, PE Insulation, Overall Beldfoil+Tinned Copper Braid(90%) Shield, PVC Outer Jacket, CM Technical Specifications Suitable Applications: RS-485, POS; Computer communications; Low Voltage Analog Signals (4-20ma, 0-10v,) Low Voltage Digital Control (24v,) Line Level Audio Panel Wiring serial communication (RS485 standard) comprising of PLCs, VFDs, HMIs, motors, RTU, SCADA, etc. within noisy environments over long distance, etc.

Superior Shielding and Signal Integrity

The Belden 9841 cable utilizes a twisted pair design with a complete aluminum/polyester foil shield plus a drain wire, effectively defending data signals from electromagnetic interference. Its low capacitance minimises signal loss over long distances, ensuring reliable RS485/Modbus communication even in challenging industrial environments characterized by high noise levels.

Durable Construction and Safe Operation

Designed with solid tinned copper conductors, polyethylene insulation, and a robust PVC jacket, this cable withstands harsh operating conditions. It passes stringent flame tests (FT4/CMR), supports temperatures from -20C to +60C, and endures high pull tension and tensile strength. Rip cord integration ensures easy stripping, simplifying on-site installation and maintenance.

Versatile Applications in Industrial Automation

Perfectly suited for industrial control, data acquisition, RS485/Modbus networks, and instrumentation, the Belden 9841 delivers consistent performance in fixed installations. Its 120-ohm impedance and 20 AWG conductors meet industry standards, making it a preferred choice for demanding automation and communication projects in manufacturing facilities across India.

FAQs of Belden 9841 RS485 Modbus 1 Pair Communication Cable:

Q: How is the Belden 9841 cable typically used in industrial environments?

A: The Belden 9841 is primarily used for RS485/Modbus communication, industrial automation, data transmission, and instrumentation. Its construction ensures reliable data transfer in fixed installations where high noise immunity and signal integrity are critical.

Q: What are the main benefits of its foil shield and drain wire design?

A: The 100% aluminum/polyester foil shield with an integrated drain wire provides excellent protection against electromagnetic interference, significantly enhancing noise immunity and maintaining data signal integrity throughout the cables length.

Q: When should I choose Belden 9841 over other communication cables?

A: Belden 9841 is ideal for applications requiring low capacitance, robust shielding, and resistance to industrial noise, such as RS485/Modbus networks. If you need a cable for fixed installations, high data integrity, and flame resistance, this cable is an excellent choice.

Q: Where can Belden 9841 cables be installed?

A: This cable is designed for indoor fixed installations in industrial environments, control rooms, or automation panels. Its FT4/CMR flame rating allows it to be safely deployed in various commercial and utility settings requiring stringent fire safety compliance.

Q: What is the process of stripping and terminating the Belden 9841 cable?

A: The cable includes a rip cord beneath the jacket, allowing for easy and clean stripping. After removing the outer jacket, you can prepare the conductors and shield for proper termination with RS485/Modbus connectors or screw terminals, following standard wiring procedures.

Q: How does the cable ensure long-term reliability in harsh environments?

A: With solid tinned copper conductors, polyethylene insulation, PVC jacket, and tested dielectric strength up to 2000V AC, the Belden 9841 resists moisture, abrasion, and physical stress. Its temperature rating and high tensile strength enable reliable operation across varied industrial conditions.

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