Technical FAQs

Ask a Question

Is there a breaker rated for DC application that has an adjustable time-delay setting?

Issue:  
Does Square D offer a DC breaker that has a time-delay adjustment setting?

Product line:  
Molded case circuit breakers

Environment:  
All Square D circuit breakers

Resolution:  
No.  In order to have an adjustable time-delay setting, the breaker must have an electronic trip unit and none of Square D's electronic trip breakers are rated for DC application.  

Note:  There are Masterpact NW DC breakers available that come with a DC1.0 trip unit, HOWEVER they only have an adjustable instantaneous dial.  
Was this helpful?
What can we do to improve the information ?