110VAC 120VAC 127VAC 220VAC Thyristorized Static Transfer Switch 50/60HZ Settable

NASN STS is a kind of switch of fast load transfer, its transfer time is less than 4ms and it is applicable to the real load transfer in the same phase and used for home and public places, especially suitable for office buildings and public places which provide power redundancy to rack-mount IT devices that are not designed to take advantage of data centers' second power.

The NASN Static Power Transfer Switches are a range of microcontroller based thyristorized AC power switching units.

The Frequency 50HZ or 60HZ can be set on LCD screen.