What happens to breakers when they are tripped too often? - Page 2 - Electrician Talk - Professional Electrical Contractors Forum
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Old 01-09-2017, 11:10 AM   #21
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Originally Posted by chadnodine View Post
Eventually the breaker will need to be replaced. I can't stand it when customers use there breaker box for everyday switching. Typically its restaurant owners switching their signs or exterior lighting off and on at the breaker which is not designed for multiple switching on a daily basis. Oh well, they always pay!

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Although turning a breaker on and off a few times on a regular basis prevents them from getting stiff.
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Old 01-09-2017, 08:29 PM   #22
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It varies by frame size and often the larger the frame the more severe the test conditions are the breaker must endure, but in general a UL489 breaker needs to be able to:
- Close and open a 600% overload a couple dozen times.
- Operate under bolted fault 3 times.
- Withstand thousands of mechanical operations both under normal current and de-energized.

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Old 01-09-2017, 09:06 PM   #23
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ITE Blueline its easy they get really hot then trip, if tripped to many times
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