Quick view APC APC AP4421A Automatic Transfer Switch (ATS) - AP4421A Now: £762.42 MSRP: Was: Rack-MountableOccupys only 1U of valuable rack space. Puts the power where it is needed most - in the rack near the equipment.Information DisplaysIndicates the status of the AC sources powering the units, as well as indicates whic… Add To Compare
