Home / Products / ATS / NDQ3H Series Automatic Transfer Switching Equipment (ATSE)
NDQ3H Series Automatic Transfer Switching Equipment (ATSE)
Updated:August 12,2022 16:05PM

Nader NDQ3H series (63A-5000A) ATS (PC level) is applicable to AC rated working voltage of 400V and below, rated frequency of 50 / 60Hz,automatic switching between two power supplies in the emergency power supply system with rated current of 16A to 5000A to ensure continuous, safe and reliable operation of important loads (such as fire load). It is widely used in hospitals, shopping malls, banks, chemical industry, high-rise buildings, military facilities, fire fighting and other important places where power failure is not allowed.
2021 Quick Selection Guide »



Features of NDQ3H Series

  • PC grade conventional products are available with the two-segment and three-segment. With the adoption of the integrated design, it features simple and reliable structure as well as fast switching speed.
  • Using the PIC single chip as the control core, the intelligent controller is powerful and easy to expand with the strong anti-interference ability.
  • Reliable mechanical interlocking device and electric interlocking protection are provided between mechanisms so as to prevent the occurrence of simultaneous closing.
  • The product has a complete range and provides the two-segment and three-segment, simple, intelligent and other types so as to meet a variety of design applications.



Questions & Answers for NDQ3H Series

  • What are the two types of automatic transfer switches?
    There are two basic types of automatic transfer switches, circuit breaker and contactor. The circuit breaker type has two interlocked circuit breakers, so only one breaker can be closed at any anytime. The contactor type is a simpler design that is electrically operated and mechanically held.
  • How do automatic transfer switches work?
    How Does an Automatic Transfer Switch Work? An automatic transfer switch, or ATS switch, connects your standby generator to your home. ... When the transfer switch detects a power outage, it switches your home to generator power. Afterward, it detects when the power is restored and switches your home back to utility power.
  • What is Auto Transfer Switch?
    A transfer switch is an electrical switch that switches a load between two sources. ... An Automatic Transfer Switch (ATS) is often installed where a backup generator is located, so that the generator may provide temporary electrical power if the utility source fails.
  • Do I need a permit to install a generator transfer switch?
    Technically yes, you need a permit from the local authorities whenever you install any permanent additions to your house. Generator transfer switches are no exception. However, if you hire a certified electrician for the installation, they will usually be able to sort out the permits on your behalf.
  • Which is better transfer switch or interlock?
    Interlock switches are usually less sophisticated and therefore less expensive than automatic transfer switches. They require training and an understanding of the building's electrical system for safe use.
  • Can you run a generator without a transfer switch?
    It's not only less safe to run a generator without a transfer switch, but you'll limit the devices that your generator can power,” says Dave Trezza, who oversees generator testing for Consumer Reports.