BELDEN 3105A 1 PAIR MODBUS
3105A is a heavy-duty, high-performance shielded twisted pair cable designed specifically for RS-485 and Modbus applications in harsh industrial environments. Featuring larger 22 AWG conductors and Datalene® insulation, it offers superior signal integrity over long distances and enhanced resistance to sunlight, oil, and physical stress (PLTC rated).
Product Description
3105A is a "premium" alternative to standard 24 AWG cables. It is engineered for demanding installations where environmental factors—such as exposure to oils, sunlight, or mechanical vibration—would degrade lesser cables.
Key Technical Specifications
Conductor Construction: 22 AWG (7x30) stranded tinned copper conductors. The larger gauge reduces DC resistance, allowing for improved signal transmission over longer cable runs compared to 24 AWG alternatives.
Dielectric/Insulation: Features Datalene® (foamed PE) insulation. This material provides a lower dielectric constant, which significantly reduces signal attenuation and propagation delay, making it ideal for high-speed data protocols.
Shielding Architecture:
Beldfoil® Shield: 100% coverage foil for high-frequency RFI protection.
Tinned Copper Braid: 65% coverage braid, which provides a balance of flexibility and effective low-frequency EMI shielding.
Environmental & Safety Ratings:
PLTC (Power Limited Tray Cable): Suitable for installation in cable trays.
SUN RES: Resistant to degradation from ultraviolet light.
Oil Resistant: Designed to withstand exposure to industrial oils and chemicals.
Impedance: Nominal characteristic impedance of 120 Ohms, ensuring proper termination and reflection control for RS-485 networks.
Primary Applications
Harsh Environment Automation: The preferred choice for factory floors where cables are exposed to oils, heat, or outdoor sunlight.
Long-Distance RS-485/Modbus: The 22 AWG conductors make this cable more reliable for long-run communication loops where signal voltage drop must be minimized.
Tray Installations: Fully rated for use in cable trays, simplifying routing and compliance in industrial facility upgrades.
Key Technical Specifications
Conductor Construction: 22 AWG (7x30) stranded tinned copper conductors. The larger gauge reduces DC resistance, allowing for improved signal transmission over longer cable runs compared to 24 AWG alternatives.
Dielectric/Insulation: Features Datalene® (foamed PE) insulation. This material provides a lower dielectric constant, which significantly reduces signal attenuation and propagation delay, making it ideal for high-speed data protocols.
Shielding Architecture:
Beldfoil® Shield: 100% coverage foil for high-frequency RFI protection.
Tinned Copper Braid: 65% coverage braid, which provides a balance of flexibility and effective low-frequency EMI shielding.
Environmental & Safety Ratings:
PLTC (Power Limited Tray Cable): Suitable for installation in cable trays.
SUN RES: Resistant to degradation from ultraviolet light.
Oil Resistant: Designed to withstand exposure to industrial oils and chemicals.
Impedance: Nominal characteristic impedance of 120 Ohms, ensuring proper termination and reflection control for RS-485 networks.
Primary Applications
Harsh Environment Automation: The preferred choice for factory floors where cables are exposed to oils, heat, or outdoor sunlight.
Long-Distance RS-485/Modbus: The 22 AWG conductors make this cable more reliable for long-run communication loops where signal voltage drop must be minimized.
Tray Installations: Fully rated for use in cable trays, simplifying routing and compliance in industrial facility upgrades.
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