Found it!States "Interiors will accept plug-in breakers.(Murray,GE,Westinghouse,ITE,Bryant or American Switch.)"

Source MYERS ELECTRIC PRODUCTS, INC. Montebello,Calif. Catalog No. M-581.

Edit: From what I have seen the interiors were made by Bryant, 200A meter socket guts were GE.I am unable to email pics otherwise pic of a 200A "trailer panel" would be in order.

Last edited by NORCAL; 12/22/07 06:32 PM. Reason: More info.