In electrical systems subject to the installation requirements stipulated in DIN VDE 0100 or IEC 60204-1 / EN 60204-1/ VDE 0113-1, neutral, protective earth or phase conductors are often connected to central busbars. This requires clear babeling of the conductor or the terminal block to the corresponding circuit.
The connection terminal blocks fulfill these conditions in two ways:
- By marking each terminal block individually
- By their blue, green-yellow or black colored housings.