Support
Search FAQs
FA124348
How can we help you today?

What is the difference between QMB and QMJ fusible branch units?

Issue:
Product Design Features

Product Line:
QMB QMJ panelboards and switchboards

Resolution:
The QMJ switches are suitable for use with Class J fuses only.

The QMB switches as standard accept a Class H or K fuses for use on systems up to 10 kAIC and Class R fuses with a Class R fuse kit for use on systems up to 200 kAIC. Then many of the QMB switches can be modified to accommodate Class J fuses by moving the load base assembly to a location marked on the enclosure. Also, some of the QMJ switches will be in a smaller footprint enclosure.

Released for: Schneider Electric Canada
Explore more
Range:
QMB Fusible Power Distribution Panelboards
Users group

Discuss this topic with experts

Visit our community and get advice from experts and peers on this topic and more
Explore more
Range:
QMB Fusible Power Distribution Panelboards
  • Help and Contact Center
  • Contact Sales
  • Find our Offices
  • Where to Buy
  • Careers
  • Company Profile
  • Investors
  • Newsroom
  • Report a Misconduct
  • Product Documentation
  • Product Selectors
  • Software and Firmware
  • Product Substitution and Replacement
  • Blog
  • Events
  • Schneider Electric Community
  • Sustainability
  • Legal Information
  • Privacy Policy
  • Cookie Notice
  • Terms of use
  • Change your cookie settings