Bus bar Rittal DK 7856.008 — aluminium, 1 pc

Rittal DK 7856.008 aluminium bus bar is a single-piece conductive profile designed for power distribution inside control cabinets, distribution panels and industrial switchgear. The aluminium construction offers a balance of conductivity and reduced weight compared to copper alternatives, while the single-piece format simplifies installation and alignment in standard enclosure systems. The product is intended to create a reliable conductive path for one or more phases and supports configurations with one or two infeeds; it can be arranged for single-phase or up to three-phase use depending on system design.

Advantages

The aluminium bus bar delivers a lightweight, corrosion-resistant conductor that reduces mechanical load on cabinet structures and is easier to handle during assembly. As a single-piece element it ensures consistent spacing and alignment for plug-in modules and terminals, and it supports reversible connection direction of plug-in modules to allow redundancy after changing the module orientation. Where available, integration with a measurement option enables monitoring when used in combination with the CMC III system.

Suitable for

• Power distribution in control cabinets and distribution panels
• Industrial electrical installations requiring aluminium conductors
• Systems needing one or two infeeds and flexible phase arrangements (single- to three-phase)
• Installations using plug-in modules where reversible connection orientation or module replacement is required

When it may not be suitable

This aluminium bus bar may not be appropriate where higher conductivity and lower resistive losses are mandatory, for example in very high-current circuits where copper bus bars are standard practice. It is also not suitable for installations that require integrated identification such as factory-applied barcodes or specific part-coded components.

Key specifications

• Material: aluminium conductor
• Supply format: single piece bus bar
• Phase configuration: supports single-phase up to three-phase arrangements depending on system wiring
• Infeed options: designed for one or two infeeds
• Compatibility: intended for use inside enclosures, control cabinets and distribution panels
• Monitoring capability: measurement option possible when combined with suitable monitoring system (CMC III)

How to use

Install the bus bar inside the enclosure according to the cabinet manufacturer’s mounting instructions and local electrical codes. Position and secure the aluminium profile to ensure correct alignment with terminal points or plug-in modules, observing the specified clearances and insulation requirements. Wire the infeeds and phases consistent with the intended configuration (single-, two- or three-phase) and ensure all connections are tightened to the recommended torque values. If measurement capability is required, integrate the bus bar with the monitoring hardware and configure the CMC III system following the manufacturer’s instructions.

What to consider before purchase

• Confirm required phase configuration and number of infeeds for your installation
• Verify physical dimensions and mounting compatibility with your enclosure or panel
• Check current-carrying capacity required for your application and whether aluminium material meets those needs
• Determine whether measurement/monitoring integration with a CMC III system is needed

Usage recommendations

Follow national electrical standards and Rittal enclosure installation guidelines when fitting and connecting the bus bar. For installations carrying high currents, verify conductor size and temperature rise calculations; consider copper alternatives if required. When using the measurement option, ensure correct sensor installation and system configuration with the CMC III for accurate monitoring.