The TeSys Deca catalogue details the specifications for normal ambient temperature under AC-1 duty.

In instances where the ambient temperature (surrounding the product, i.e. inside the enclosure) exceeds the limit quoted in the catalogue, then a derating of the continuous thermal current is applied.

Please consult the table below:



Additional good practice measures when using contactors in high ambient temperature:

• Avoid side by side (without air gap) mounting.
• Ensure good air circulation to avoid hot spots.
• Ensure cable sizes are conservative to ensure good heat sink properties.

Note: This FAQ only applies to contactors used under continuous thermal current conditions (AC-1 duty) and is complementary to the information provided in the catalogue.

Released for: Schneider Electric Ireland