Dual Power Automatic Transfer Switching Ndq3-125/250/400/630/800/1600 Automatic Transfer Switch

The NDQ3 series (125A~1600A) PC-grade automatic transfer switchgear is suitable for places with AC220/230/240V, AC380/400/415V, rated frequency of 50Hz. The new D-type controller features LED LCD display. It has functions such as wide frequency detection, fault recording, 485 communication, programmable terminals, covering over-frequency, under-frequency, phase sequence, phase protection, etc. This product is mainly used for the first-level load as stipulated by the country, widely applicable in fire protection, telecommunications, hospitals, hotels, urban rail transit, high-rise buildings, industrial assembly lines, TV stations, and other important places requiring continuous power supply. The main and backup power sources can be grid power, self-starting generator sets, battery packs, etc.