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What is the terminal temperature rating on type MA, MH, MX, or ME circuit breakers?

Inquiry:
What is the terminal temperature rating on type MA, MH, MX, or ME circuit breakers?

Product Line:
MA, MH, MX, and ME  circuit breakers

Environment:
Electrical distribution systems

Cause:
Temperature rating is widely misunderstood and is necessary for selecting proper conductor size and rating.

Resolution:
The termination rating for MA, MH, MX, and ME circuit breakers is 75 deg. C. 
This means that if terminated with cable, the insulation rating must be 75 deg. C or greater, and the conductor size must be based on the  75 deg. C ampacity. 
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