Interrupting Rating of Circuit Breaker

[andrew.tkelly]

Hi,

I'm looking at the label of a Square D circuit breaker, and it lists the interrupting rating as the following:

240V ~ 100kA

480V ~ 65kA

However, this is a 208Y/120VAC connection. I'm marking the interrupting rating of the circuit breaker on my plan set, but I'm not quite sure what to put for the kAIC value.

Regards,
Andy

 

[ron]

Closest but not below: 100kA

 

[andrew.tkelly]

Thank you!

 

[publicgood]

Note depending on intent, avoid marking max from ckt bkr on plans if design allows less. Mark required and allow contractor means and methods.

 

[Jraef]

Hi,

I'm looking at the label of a Square D circuit breaker, and it lists the interrupting rating as the following:

240V ~ 100kA

480V ~ 65kA

However, this is a 208Y/120VAC connection. I'm marking the interrupting rating of the circuit breaker on my plan set, but I'm not quite sure what to put for the kAIC value.

Regards,
Andy

In theory the value might have been slightly higher at 208V than at 240V, but nobody lists LV molded case breakers at more than 100kAIC.