Observe permissible installation types

Increased heat generation The bus coupler may overheat if the installation position is incorrect or the minimum distances are not adhered to. Ensure adequate ventilation. A horizontal installation position is ideal. Leave at least 30 mm clearance above and below the bus coupler.

Note the following specifications for the control cabinet:

• Keep to the prescribed ambient temperature. Measure the temperature below the bus coupler at a distance of 30 mm to the cooling fins, in order to determine the ambient temperature correctly.
• Adhere to the minimum distances of 30 mm above and below the bus coupler.
• Additional electrical equipment affects the heat generation in the control cabinet. Select a suitable control cabinet enclosure depending on the application, or ensure that excess heat is dissipated from the control cabinet.

Prescribed installation position for temperatures up to 60 °C

Install the bus coupler horizontally in the control cabinet on a mounting rail, in order to ensure optimum heat dissipation.

Ventilation openings are located at the top and bottom of the housing. This ensures an optimum airflow through the bus coupler in vertical direction. In addition, a minimum clearance of 30 mm above and below the bus coupler is required, in order to ensure adequate ventilation.

Installation positions with reduced temperature range up to 50 °C

You can also mount the bus coupler vertically or horizontally on the mounting rail. Note that you can then only operate the bus coupler up to an ambient temperature of 50 °C.

Ensure that bus terminals that are connected to the bus coupler are designed for operation in vertical or horizontal position.