Overview
The Belden 8778 is a professional-grade multi-conductor instrumentation cable designed for audio, control, and signal transmission in industrial and commercial environments. Built with 6 pairs of individually foil-shielded conductors and an overall Beldfoil shield, the Belden 8778 cable delivers clean signal integrity and EMI rejection necessary for sensitive instrumentation and control systems.
Key Features
- 6-Pair Configuration: Individually foil-shielded pairs with overall Beldfoil (Z-fold) shield providing 100% coverage and superior EMI protection.
- 22 AWG Tinned Copper Conductors: 7-strand construction with tinned copper for corrosion resistance and enhanced conductivity.
- Polypropylene Insulation: Twisted-pair design with PP insulation ensures signal stability and minimal crosstalk between pairs.
- Dual-Layer Protection: Individually shielded pairs plus overall PVC jacket with tinned copper drain wire for comprehensive environmental and electrical protection.
- NEC Type CM Rated: Approved for general-purpose communication and control applications in compliance with electrical codes.
- Wide Operating Range: Rated 300V, 80°C maximum operating temperature, suitable for both indoor and industrial installations.
Technical Specifications
- Conductor: 22 AWG, 7-strand tinned copper
- Configuration: 6 pairs, individually foil-shielded with overall Beldfoil shield
- Insulation Material: Polypropylene (PP)
- Jacket Material: Polyvinylchloride (PVC)
- Drain Wire: 22 AWG stranded tinned copper
- Voltage Rating: 300V
- Operating Temperature: –20°C to +80°C
- Code Compliance: NEC Type CM
- Weight: Approximately 83 lbs/1000 ft
- Color Coding: Chart 3
Typical Applications
The Belden 8778 multi-conductor cable is ideal for:
- Industrial instrumentation and sensor signal transmission
- Control system interconnect between PLCs, relays, and I/O modules
- Audio/video installations requiring shielded multi-pair runs
- Building automation and HVAC control networks
- Equipment racks and patch panels with multiple signal feeds
- Commercial and industrial environments requiring EMI suppression
Compatibility & Replacements
Compatible With
- Allen-Bradley PLCs and control modules requiring shielded signal cable
- Siemens S7-1200 and S7-1500 I/O wiring
- Omron and Mitsubishi industrial controllers
- Standard NEC Type CM rated conduit and cable trays
- Building automation systems (BMS) and HVAC networks
- Audio/AV installations requiring twisted-pair shielded transmission
Replaces / Drop-In Replacement For
- Belden 8777 (3-pair variant for smaller applications)
- Similar 6-pair 22 AWG CM-rated multi-conductor cables from competitors
- Legacy audio control cables in retrofit applications
Works With
- Connector termination standards: DB-25, Amphenol, Phoenix Contact headers
- Field-installable connectors and barrier strips
- Conduit and raceways (standard electrical enclosure routing)
- Cable management systems and patch panels
- Industrial shielded cable termination kits
