AFCI breaker are HOT!

[rmeier2 (Robert Meier)]

According to Eaton the normal operating temperature will be 80-120° F.

Per UL standard 489 for molded case
circuit breakers, the breaker is required
to pass an overload test (50 operations
at 600% rated current, not less than
150 amperes) followed by 100% rated
current in open air with a temperature
not to exceed 50°C rise over ambient
at both line and load terminals.
This temperature test may also be
performed in an enclosure at 80%
rated current and temperature not
to exceed 65°C rise over ambient.
(The handle shall not exceed 60°C.)
What this means is that in a loadcenter
with a 70°F ambient temperature, the
temperature rise can be as high as
187°F and still meet UL operating
parameters for the breaker. While
the breaker functions properly to this
temperature, it will normally be in the
80 – 120°F range due to the electronics
in the breaker.

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