ASCO 300 Series 400A Automatic Transfer Switch for Sale in Portland, Oregon

The ASCO 300 Series Automatic Transfer Switch delivers reliable power switching with 400A capacity, 115–600V output, and J-frame design. Current-limiting fuses handle up to 200kA at 480/600V, and it’s available in NEMA 1 (24″x56″x14″) or NEMA 3R, 4, 12 (24″x63″x18.2″) enclosures for versatile installations.

The ASCO Automatic Transfer Switch, manufactured by Schneider Electric, provides 24/7 protection for your critical loads. When utility power fails, the ATS automatically starts the generator and transfers the load within seconds once proper voltage and frequency are reached. When utility power returns, the ATS switches the load back and shuts down the generator after a short delay. Listed to UL 1008 and compliant with NFPA 110 and NEC Articles 700, 701, and 702, it ensures safe, reliable operation. Its true double-throw design prevents simultaneous connection to both power sources. The Series 300 Group G controller features an intuitive 128×64 LCD with keypad, LED indicators for switch position, source availability, alerts, and easy-to-use test/time delay functions. With a withstand and close-on rating of up to 22kA with circuit breakers, and its compact, front-accessible design, the ASCO 300 Series fits into tight spaces while allowing easy installation of all power cabling, with optional side-mounted pull boxes for additional cable routing.