bolt-in circuit breakers

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Re: bolt-in circuit breakers

Another No and Yes answer. :D

No you will not find a code article that says breakers must be bolt in.

Hoverer you will find a code article
"110.9 Interrupting Rating" that basically says the breakers have to be able to handle the fault current available.

In many commercial locations the available fault current will be above the ratings of "plug in breakers" so in a round about way bolt on breakers may be required to meet 110.9.
 
Re: bolt-in circuit breakers

Whether a breaker is plug-in or bolt-in has no bearing on the AIC rating. You can get a Square D breaker rated for 65,000 in both plug-in and bolt-in. The AIC rating is whatever the name tag on the breaker says.
 
Re: bolt-in circuit breakers

Jerry I imagine you are talking about a Square D I line panel?

A one of a kind panel in many respects.

I do not recall seeing plug in branch circuit breakers with that high of a rating.

But maybe we just do not use them.
 
Re: bolt-in circuit breakers

Cutler has some 42K BR series breakers. They're prefixed by BRHH in the model numbers. Pretty limited selection though. BRH's are 22K, lots more variety there.
 
Re: bolt-in circuit breakers

Bob,

Square D makes QH (QO style) plug in breakers 1P to 3P and 15A to 30A rated 65KAIR.
 
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