Here's what my transfer switch looked like. It was a progressive dynamic pd52. The shore power side of the relay failed two days ago, taking the charger portion of the inverter with it when it went. Luckily that was all.
I could not find an exact replacement that was within driving distance, but I found a unit by Southwire that had the same spec's and the same input and output direction of wire feed.
Now I am just waiting for a replacement/upgrade inverter, and in the meantime, I am using an external battery charger to keep the house bank charged.
Bob K
06 Knight PLQ