What is the derating factor to be applied to a TeSys Deca contactor when used under continuous thermal current conditions in a high ambient temperature?
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:
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 UK
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