Can PowerMax PM77VR Power Center With Converter Replace Older WFCO 8900 Series Power Center?

Published 01/07/2026

Question:

Can the PowerMax PM77VR replace an older WFCO 8900 series power center in a 50-amp RV?

asked by: Daniel

Expert Reply:

Yes, Daniel - the PowerMax power center with converter # PM77VR is designed to replace older WFCO 8900-series power centers WF-8900 PEC in 50-amp RVs. It’s a full 50-amp AC/DC power center with a built-in 60-amp DC converter, so it handles shore power distribution, 12V loads, and battery charging in one unit.

What sets the # PM77VR apart is that it also adds wireless control for certain RV circuits (awnings, slide outs, lights etc. using smartphone app), which most older 8900-series panels didn’t offer. If your RV is already wired for 50-amp service and you’re replacing an aging power center, this is a true drop-in upgrade that you'll really like!

If you want, we can double-check dimensions against your existing panel, but if you do have the WFCO 8900 then it won't need any modifications! . This one measures 11-3/4" wide x 14-1/2" tall x 9-3/4" deep and needs cutout dimensions of 10" wide x 13" tall x 8-3/4" deep.

expert reply by: Andrew N