ASCO 900 series Automatic Transfer Switches

ASCO 900 series Automatic Transfer Switches are suitable for emergency and standby power system applications. They meet emergency system rating requirements as defined in National Electrical Code (NEC) Article 700 and UL 1008. Also, they are suitable for the requirements of NEC Article 517 - Health Care Facilities, NEC Article 701 - Legally Required Standby Systems, NEC Article 702 - Optional Standby Systems, NFPA 99 Health Care Facilities, and NFPA 110 Emergency and Standby Power Systems. ASCO 940 Automatic Transfer Switches provide the most reliable means for transferring critical loads between two sources of electrical power (typically a utility and an on-site engine driven generator). Their quality design, rugged construction and proven performance assure maximum reliability and value for the specifying engineer, installer and user. The ASCO 940 consists of a power transfer switch and a microprocessor control panel, which is available in either open or enclosed configurations. The high withstand and close-on ratings achieved by the ASCO single-solenoid operator and unique contact design make ASCO 940s the best choice for all automatic transfer switch applications.