ASCO Series 300 D-frame automatic transfer switch delivers 70 A at 208 V (60 Hz) in an open-transition, three-pole configuration housed in a Type 1 indoor enclosure. It automatically transfers the load between normal and emergency power sources to maintain power for connected equipment when a source condition changes. Model details include Cat # D03ATSA30070CGXC with controller option 11BE, reflecting the 300-series open-transition design for indoor applications.
