When an older MagneTek 6300 or 7300 series converter needs attention, the part number printed on the installed unit is more useful than an RV's model year. The 6345, 7345 and 7355 have different replacement paths. The guide below shows the major converter sections and helps identify the correct upgrade without assuming all MagneTek-labelled parts will interchange.
Identify the old model before selecting its lower section
6300-series upgrade
7300-series 45A repair
7300-series 55A repair
What is different between 6345RU, 45RU and 55RU?
| Installed model | Relevant replacement | Charging output | Important difference |
|---|---|---|---|
| 6345 | 6345RU | 45A maximum | Factory upgrade kit contains a new 11-position DC distribution fuse panel |
| 7345 | 45RU | 45A maximum | Replacement converter lower section, not the same fuse-panel kit as 6345RU |
| 7355 | 55RU | 55A maximum | 55A converter section; do not select 45RU just because its casing looks similar |
All three Parallax RU products have published approximate dimensions of 3.65 inches high × 10 inches wide × 7.5 inches deep. They have distinct intended applications. The 6345RU's included fuse-board upgrade matters because the older 6300-series distribution arrangement is different from the 7300 series.
Replacement parts and used converter photos
Compare these pictured products using their own listings. The first three are exact-number replacement products; the two older MagneTek units are separate used listings for identifying or sourcing those individual models. Inventory is shown on each product page, and used items can be viewed by appointment in Kelowna.
Factory replacement information
Parallax publishes the original 6345RU upgrade-kit specifications, the 45RU replacement details, the 55RU instructions and archived 6300-series wiring documents. Those original documents, together with the installed unit's actual labels, are the reference for exact connections.