I can't answer that question, but I have a similar question. My volt and amp needs are the same as yours... and I saw this on ebay for $105:
It is a Schneider 865-1065, 160v, 250A. It looks the same as the Airpax that electroauto or KTA sell, but costs less. It appears to have the DELAY...52 rating but I can't quite read it. I called the people but he said he'd have to go out to the warehouse to read it.
Think it would do the trick?