The NDQ3B Automatic Transfer Switch (ATS) is an intelligent dual-power switching device designed for reliable power transfer between main and backup sources.
Device Body: Two circuit breakers with electric operating mechanisms, mechanical interlock, auxiliary contacts, and terminal blocks, mounted on a metal plate.
Intelligent Controller: Microcontroller with I/O modules, connected via a plug connector and shielded cable (≤2m).
The two parts are connected by aerial plug port and special shielded cable whose length is not over 2m formed into intelligent control system whose control supply voltage is 220V, 50/60Hz.
Dual Interlock Protection: Mechanical and electrical interlocks ensure safe and reliable operation.
Suitable for reliable power transfer in single-phase 220V, three-phase three-wire, and three-phase four-wire systems.

