Browse FAQs

What is the difference between the old KDL main circuit breaker and the current QDL main circuit breaker used in the QO 3-Phase load centers?

Published date: 13 September 2019

Product Design Features

Product Line:
QO Load Centers

Main Breakers



The KDL main circuit breaker is obsolete and no longer used in the Square D QO 3-phase load centers. The current design QO 3-phase Load Centers uses the QDL main circuit breakers. The QDL breaker is NOT a replacement for the KDL breaker.

Was this helpful?

What can we do to improve the information ?

Can't find what you are looking for?

Reach out to our customer care team to receive information on technical support, assistance for complaints and more.