What is the replacement for a QMB3220, Series 4, QMB switch?
What is the replacement for a QMB3220 Series 4 QMB switch?
QMB panelboards sold and supported in the USA.
Cross reference, replacement.
Replacement for obsolete QMB3220.
If the QMB panel board was built before 1961, there is no viable replacement.
If the QMB panel board after 1961, but before 1984, a QMB324, Series D2, QMB switch may be a suitable replacement. The QMB324 requires 9" of panel mounting space and may require a QMB320EX Plug-On Extension Assembly if the existing panel is a 38" wide QW panel board or a free standing switchboard.