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Old 06-04-2015, 09:58 AM   #1
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Electrical Part Question

I am replacing the two circuit breakers and plastic covers on the front of the TT and wanted to make sure I bought the correct replacement breakers. I already have the new covers.

The first breaker from the right is labeled SHORTSTOP 12V V47 50A and the next one is labeled SHORTSTOP 12V W13 30A

I see them for sell on Amazon (Bussman) but none of them list the V47 or the W13 part of the name, just 12V 50A and 12V 30A. What does the V47 and W13 refer to and do I have to find the exact replacement?

Also is that the correct size for both, one 50A and the next 30A?

Thanks

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Old 06-04-2015, 10:17 AM   #2
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Originally Posted by dmullen View Post
I am replacing the two circuit breakers and plastic covers on the front of the TT and wanted to make sure I bought the correct replacement breakers. I already have the new covers.

The first breaker from the right is labeled SHORTSTOP 12V V47 50A and the next one is labeled SHORTSTOP 12V W13 30A

I see them for sell on Amazon (Bussman) but none of them list the V47 or the W13 part of the name, just 12V 50A and 12V 30A. What does the V47 and W13 refer to and do I have to find the exact replacement?

Also is that the correct size for both, one 50A and the next 30A?

Thanks

dmullen
If "12V 50A" and "12V 30A" are printed on the cases of your circuit breakers any similar breaker of the same amp rating will work.

BTW, those "plastic covers" are not necessary, (none of the breakers on my coach have plastic covers).

Mel
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Old 06-04-2015, 10:23 AM   #3
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So ignore the V47 and W13 part? Also is it normal practice to have a 50A breaker and then a 30A?


I like using the covers to help keep dirt out. I also plan to add some dielectric grease to each connection.
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Old 06-04-2015, 10:30 AM   #4
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Looks like the 30 amp is a feed off of the 50, so whatever is connected to the 30 will pop the breaker. Otherwise if it were connected to the 50 it would most likely melt or cause a fire if overloaded. It is like in your house, you have a 100 or 200 main breaker and multiple smaller breakers running off of that.
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Old 06-04-2015, 01:33 PM   #5
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Mel, breakers in your photo are wired in parallel, not series; If one pops, the other will still work. The left breaker is 30A, does that go to your trailer brakes? I can see two wires on the 30A, one should go to your electric trailer jack. My guess is that the 50A on the right goes to your 'house' service, but that is just a guess. I like the rubber caps, protects from shorts as well as moisture/dust. You might consider enclosing both breakers in a 'four square' junction box w/ blank cover to protect even better. Any 30A or 50A breaker will work.
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Old 06-04-2015, 02:52 PM   #6
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Mel, breakers in your photo are wired in parallel, not series; If one pops, the other will still work. The left breaker is 30A, does that go to your trailer brakes? I can see two wires on the 30A, one should go to your electric trailer jack. My guess is that the 50A on the right goes to your 'house' service, but that is just a guess. I like the rubber caps, protects from shorts as well as moisture/dust. You might consider enclosing both breakers in a 'four square' junction box w/ blank cover to protect even better. Any 30A or 50A breaker will work.
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Not my photo, not my trailer, (or my trailer brakes).
Sorry
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Old 06-05-2015, 08:48 AM   #7
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Thanks for the information guys, much appreciated!
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