Arc Fault Breaker Temp

[Michael Bronner]

Gentlemen and Ladies,

Question. At what temperature would you consider an arc fault breaker to be 'too hot' indicating a potential concern? Measured several today that were all around 115*. Other, non arc faults, were all room temperature, 76-77*. I typically find them to them several degrees above non arc faults but not this much warmer.

Thanks

[Raymond Wand]

The temperature rating should be on the breaker, to my knowledge that should be about 40 celcius/104 fahrenheit.

[Dave Hahn]

Per the attached from Eaton (a manufacturer of over-current devises, including arc faults), between 80 - 120 F is normal, with higher temps (187 F given as example) still meeting UL listing for the devise.