Do QO and QOB breakers meet Nema AB3?
Issue:
Do QO and QOB breakers meet Nema AB3?
Product Line:
Miniature Circuit Breakers
Resolution:
NEMA AB3 is an application guide, not a design standard. In other words, NEMA AB3 is a standard for breakers on how they are applied or used, not on how they were manufactured.
All of Square-D’s UL 489 breakers comply to NEMA AB1 standard. The NEMA AB1 is the design standard.
Released for: Schneider Electric USA
Need help?
Product Selector
Quickly and easily find the right products and accessories for your applications.
Get a Quote
Start your sales inquiry online and an expert will connect with you.
Where to buy?
Easily find the nearest Schneider Electric distributor in your location.
Help Center
Find support resources for all your needs, in one place.