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Breaker help

jmenende

Well-known member
Steel Soldiers Supporter
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Location
Puerto Rico
Hello Gents. Im having an issue with this breaker in a mep 009b. I have already taken off the contactor close mechanism thats sits on top amd openned the units. The issue is that it will not stay in the closed position even after manually operating it. Any suggestions.
20220414_130826.jpg reaker
 

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Scoobyshep

Well-known member
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Location
Florida
I havnt worked on this specific breaker, but other large breakers (especially ones that are shunt trip capable) have a mechanical trip catch, sometimes these can get stuck ant it prevents the breaker from closing.

Does it trip immediately after moving the handle to close?
 

jmenende

Well-known member
Steel Soldiers Supporter
446
361
63
Location
Puerto Rico
I havnt worked on this specific breaker, but other large breakers (especially ones that are shunt trip capable) have a mechanical trip catch, sometimes these can get stuck ant it prevents the breaker from closing.

Does it trip immediately after moving the handle to close?
Yes, i figured the issue was mecanical and started playing with the mechanism till i found a detent that was not falling in place due to a spring that was not well adjusted. I lubed everything up as well and got back working. Thanks for the help. Here is a pic of the culprit for future reference.
 

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