If the transfer switch is mounted and enclosed in an outdoor rated enclosure, such as a NEMA 3R enclosure, the answer is YES.

How will one determine if the enclosure is outdoor rated?

The catalog number of the transfer switch should reflect the type of enclosure.

Using the catalog number provided below, if the last character/letter is included in the list below, the enclosure is outdoor rated.  Therefore, the transfer switch is rated for outdoor installation.

Published for:ASCO Power Technologies USA