ABB i-bus AT/S 4.20.1 Instrucciones De Instalación Y Funcionamiento página 15

Important notes
Safety instructions
- Protect the unit against moisture, dirt and
damage during transport, storage and
operation.
- Do not operate the unit outside the
specified technical data.
- Operate only in a closed housing
(distribution cabinet).
- Earth the unit at the terminals provided
- if existing - for this purpose.
- Do not obstruct cooling of the units.