Bus Bars
for safe grounding in control cabinets
Ground bars are used to collect and distribute protective earth in control cabinets and electrical installations.
The right grounding bar ensures correct potential equalization, service-friendly installation and stable operation in industrial environments.
Explore our range of earthing bars
133 assaults
10 x 3 x 1000 (no fast.)
153 assaults
Choose the right grounding bar for your installation
When choosing a grounding bar, it is important to consider how the installation is structured and what requirements there are for grounding and service.
Look in particular at:
- Number of connections – should be sufficient for both current and future needs
- Conductor cross-section – adapt to currents and standard requirements
- Mounting – DIN rail or directly on mounting plate
- Material – copper or brass depending on application
A correctly dimensioned grounding bar provides a clear structure in the control cabinet and reduces the risk of incorrect connections.
Copper or brass grounding bars?
Copper grounding bars
Copper is the most common material for grounding bars in electrical cabinets.
Advantages:
- Very low resistance
- High current resistance
- Suitable for main grounding and potential equalization
Copper bars are often used where several protective earths are collected at a common point.
Brass grounding bars
Brass is primarily used where mechanical stability and corrosion resistance are prioritized.
Advantages:
- Robust construction
- Good strength in many connections
- Suitable for environments with variations in temperature and humidity
Brass rails are often used as supplementary grounding points in electrical cabinets.
Potential equalization in control cabinets
The grounding bar is a central part of the electrical cabinet's potential equalization. By collecting all protective earths at a common point, the risk of voltage differences and unwanted currents is reduced.
Correct potential equalization contributes to:
- Increased personal safety
- More stable operation
- Reduced risk of disruption
When might other solutions be more appropriate?
Ground bars are not always the best solution in all installations.
In the following cases, other options may be more suitable:
- For single ground points, direct connection to chassis may be sufficient.
- When connecting shielded cables, shield clamps are often a better choice.
- For high EMC requirements, the grounding bar needs to be supplemented with grounding braids.
➡ Earthing braids – icotek page
Related product areas
FAQ – Frequently asked questions about grounding bars
What is the difference between ground busbar and PE busbar?
A PE busbar is a type of ground busbar intended for protective earth. In practice, the terms are often used synonymously.
How many connections should a grounding bar have?
Always choose a grounding bar with more connections than the current need to allow for future expansion.
Do earthing bars need to be marked?
Yes, marking ground points facilitates service and reduces the risk of errors during installation and maintenance.
Do you need help choosing the right grounding bar?
Our experts will be happy to help you find the optimal solution for your installation.
