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What information is available for rerating breakers for ambient conditions?

Issue:
What information is available for rerating breakers for ambient conditions?

Product Line:
Molded Case and Miniature circuit breakers

Environment:
Products sold in the USA

Cause:
Application information

Resolution:
Molded case circuit breakers certified to UL 489 are designed and calibrated for use on 50/60 Hz ac systems in a 25 to 40 deg. C ambient. For application at temperatures outside this range, or for extreme altitude and other conditions refer to the technical catgalog for the breaker, and for older breakers refer to data bulletin 0100DB0101.
 
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