ASCO 300 Series 400A 3Ø-277/480V 4 Wire Automatic Transfer Switch
The ASCO Series 300 was designed for one purpose - to automatically transfer critical loads in the event of a power outage. Each and every standard component was designed by ASCO engineers for this purpose. The rugged construction and proven performance of the ASCO Series 300 assure the user of many years of reliability. The Series 300 is even designed to handle the extraordinary demands placed on the switch when starting or restarting stalled motors and switching high inrush loads. ASCO's Series 300 modular, compact design makes it easy to install, inspect and maintain. All parts are accessible from the front so switch contacts can be easily inspected. PRODUCT FEATURES: • The Series 300 is listed to UL 1008 standard for Transfer Switch Equipment and CSA standard C22.2 for automatic transfer switches. • Meets NFPA 110 for Emergency and Standby Power Systems and the National Electrical Code (NEC) Articles 700, 701 and 702. • 30 through 3000 amps in a compact design. • Available to 600 VAC, single or three phase. • True double-throw operation: The single solenoid design is inherently inter locked and prevents contacts from stopping between sources or from being in contact with both sources at the same time. • There's no danger of the Series 300 ATS transferring loads to a dead source because the unique ASCO single-solenoid operator derives power to operate from the source to which the load is being transferred. • Easy-to-read flush-mounted control and display panel provides LED indicators for switch position and source availability. It also includes test and time-delay bypass switches as standard features. • Standard engine exerciser for weekly automatic testing of engine generator set with or without load. • Adjustable time-delay feature prevents switch from being activated due to momentary utility power outages and generator dips.