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Belden 9842 TWO Pair RS485 Modbus Cable

Price 115 INR/ Meter

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Belden 9842 TWO Pair RS485 Modbus Cable Specification

Conductor Shape
Round

Features
Low capacitance, High Flexibility, Excellent noise immunity, Sunlight & Oil Resistant, Flexible for easy installation, Suitable for RS485 and Modbus applications

Dielectiric Strength
2000 V RMS min.

Cable Type
Twisted Pair, Shielded (S/STP)

Number of Conductor
2 Pairs (4 conductors)

Conductor Type
Stranded

Tensile Strength
150 N minimum

Armored Material
Unarmored

Rated Temperature
-20C to +60C

Impedance
120 Ohms 10 Ohms

Usage & Applications
Industrial data communication, Automation control, Modbus and RS485 protocol link

Insulation
PVC

Diameter
7.8 mm (nominal)

Core Material
Tinned Copper

Core Number
2 pairs (4 cores)

Operating Temperature
-20C to +60C

Locking Type
None (cable only)

Install Type
Fixed or Flexible installation

Weight
Avg 43.5 kg/km

Product Type
Data Communication Cable / RS485 Modbus Cable

Length
305 meters (1000 feet) default; customizable lengths available

Voltage
300V (UL AWM); 600V (CSA) max

Insulation Material
Polyvinyl Chloride (PVC)

Application
RS485 Data Transmission, Modbus Networks, Industrial Automation, Communication Systems, Instrumentation

Conductor Material
Tinned Copper

Jacket Material
PVC (Polyvinyl Chloride)

Storage Temperature
-40C to +75C

Connector Color
N/A (cable supplied without connectors)

Shield Material
Aluminum Polyester Foil with Tinned Copper Braid

Jacket Color
Slate Gray

Dimension (L*W*H)
Diameter: 7.8 mm (nominal); Length as per supply

Material
PVC, Tinned Copper, Aluminum Polyester Foil

Color
Slate Gray Jacket; Cores: Black/White-striped

Size
24 AWG (7/32 stranded)

Shield Coverage
Aluminum Polyester foil (100%) + Tinned copper braid (65%)

Capacitance
34 pF/ft conductor-to-conductor

Pair Identification
Color-coded conductors with alphabetic print

Max Pulling Force
N/A (refer to technical documentation for values based on install method)

CSA Approval
CSA AWM I/II A/B FT1

AWG Size
24 AWG stranded for low signal attenuation

Flame Rating
UL1685, VW-1, CSA FT1 flame tests

Mutual Capacitance
60 pF/m

Voltage Test
2000V RMS (1 min)

UL Approval
UL AWM 2919, 2912, CM

Belden 9842 TWO Pair RS485 Modbus Cable Trade Information

Minimum Order Quantity
100 Meter

Main Domestic Market
All India

About Belden 9842 TWO Pair RS485 Modbus Cable

24 AWG pairs stranded (7x32) tinned copper conductors, polyethylene insulation, twisted pairs, overall Beldfoil (100% coverage) + tinned copper braid shield (90% coverage), 24 AWG stranded tinned copper drain wire, PVC jacket.

Superior Noise Immunity and Signal Integrity

Double shielding with aluminum polyester foil and tinned copper braid provides the Belden 9842 cable with excellent protection against electromagnetic interference. This results in reliable signal transmission, even in noisy industrial environments. The low capacitance and precision twisted pair construction further optimize data integrity across RS485 and Modbus networks.

Flexible for Easy Installation

Crafted with stranded tinned copper conductors and a robust yet pliable PVC jacket, this cable is engineered for ease of installation. Its high flexibility accommodates both fixed and dynamic routing needs, making it suitable for industrial automation systems with tight bends and movement requirements.

Compliance and Safety

The Belden 9842 cable surpasses stringent flame, voltage, and mechanical standards, carrying approvals from UL and CSA. With flame ratings such as UL1685 and VW-1, and rated up to 600V (CSA), it ensures operational safety and meets international codes for industrial cable applications.

FAQ's of Belden 9842 TWO Pair RS485 Modbus Cable:

Q: How is the Belden 9842 cable suitable for RS485 and Modbus applications?

A: The cable's 120 Ohm nominal impedance, low capacitance, and superior shielding are engineered to meet the specific demands of RS485 and Modbus protocols, facilitating reliable and high-quality data transmission in industrial networks.

Q: What are the benefits of the dual shielding used in this cable?

A: The combination of aluminum polyester foil (100% coverage) and tinned copper braid (65% coverage) provides robust protection against external noise and interference, ensuring clear signals and sustained performance in electrically noisy environments.

Q: Where is the Belden 9842 cable commonly installed?

A: This cable is widely used in industrial automation control systems, communication networks, Modbus data links, and instrumentation setups-typically within factories, manufacturing plants, and process control environments.

Q: Can the cable be used in both fixed and flexible installations?

A: Yes, the Belden 9842's stranded conductors and robust PVC jacket allow it to be installed in both fixed settings and dynamic, flexible arrangements where routing may involve movement or bends.

Q: What safety standards does the Belden 9842 cable comply with?

A: It complies with UL (AWM 2919, 2912, CM) and CSA (AWM I/II A/B FT1) approvals, meets UL1685 and VW-1 flame ratings, and passes rigorous voltage and mechanical strength tests for reliable performance and safety.

Q: How can the cable's length be specified during purchase?

A: The cable is supplied in default lengths of 305 meters (1000 feet), but can be ordered in custom lengths according to application requirements by consulting the supplier or manufacturer.

Q: What is the recommended storage temperature range for this cable?

A: The Belden 9842 cable should be stored at temperatures between -40C to +75C to maintain optimal material properties and ensure longevity prior to installation.

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