Your search for "AP7752" revealed the following:
APC AP7752 1x NEM A L5-20P 10x NEM A 5-20R 1U 120V 20A Auto Transfer Switch
SKU: NSB-6042
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
NEW APC AP7752 1x NEM A L5-20P 10x NEM A 5-20R 1U 120V 20A Auto Transfer Switch
SKU: NSN-7275
Condition: New
Shipping: Overnight Options
Warranty: 365 days