What are the maximum altitude ratings for general duty, heavy duty, and double throw safety switches?

Issue:
Product Design Features

Product Line:
General Duty, Heavy Duty and Double Throw Safety Switches

Resolution:
The maximum altitude of the site of installation should not exceed 6,600 ft. (2,000 m) per NEMA Standards Publication KS-1, "Enclosed and Miscellaneous Distribution Equipment Switches".

Released for:Schneider Electric USA