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Automatic Transfer Switch: What It Is and How It Works

An automatic transfer switch (ATS) is an essential component of emergency power systems. This device transfers power automatically from a primary power source to a secondary power source during power outages or other electrical problems. Automatic transfer switches are frequently utilized in mission-critical facilities, such as hospitals, data centers, and manufacturing plants.

Automatic transfer switches continuously monitor a building's incoming power supply. Once it detects an issue with the primary power source, such as power outages, an ATS switches immediately to the backup power source, like a generator set. The transition usually occurs within seconds to guarantee that all essential systems and equipment are fully operational. An ATS keeps critical systems and equipment continue to function during a power and at the same time minimizes the risk of downtime and potential revenue loss.

An automatic transfer switch, as opposed to manual transfer switches, do not require manual intervention to switch between power sources. In addition, we can classify an ATS based on its intended application, such as commercial or industrial use.

When selecting an ATS, several factors must be considered including the facility's power requirements, the existing backup power source, and any applicable industry standards and regulations. For instance, UL 1008 is a widely recognized standard for ATSs used in emergency power systems, and opting for an ATS that complies with this standard can help ensure the highest level of dependability and safety.

In conclusion, an automatic transfer switch is crucial to any emergency power system to ensure that your critical systems and equipment run smoothly during power outages and other electrical problems. With the perfect ATS, you can have peace of mind knowing that your sensitive equipment and facilities are safe from potential losses and damages triggered by power-related issues.

For your automatic transfer switch needs, FMIDC, your ATS specialist, is here to assist you. From identifying the ideal ATS for your requirements through the installation and maintenance processes, our team of experts is here to help. Contact us today!

1.       ASCO-ATS Overview Catalog, Rev D. Schneider Electric. Available at: https://download.schneider-electric.com/files?p_enDocType=Brochure&p_File_Name=ASCO-ATS+Overview-Catalog-pub2062-RevD.pdf&p_Doc_Ref=ASC-ATS-BR-ATSOVERVIEW
2.       The Benefits of Custom ATSs for Critical Power Applications. Schneider Electric. Available at: https://download.schneider-electric.com/files?p_enDocType=White+Paper&p_File_Name=asc-ts-wp-custom-eng.pdf&p_Doc_Ref=TS-WP-BENEFITS-CUSTOMTS
3.       Three Reasons to Choose UL 1008. ASCO Power Technologies. Available at: https://www.ascopower.com/us/en/resources/technical-briefs/three-reasons-to-choose-ul-1008.jsp
4.       Differences between MTS, Non-Automatic, and ATS. ASCO Power Technologies. Available at: https://www.ascopower.com/us/en/resources/technical-briefs/differences-between-mts-nonautomatic-and-ats.jsp
5.       Basic Automatic Transfer Switch Functions. ASCO Power Technologies. Available at: https://www.ascopower.com/us/en/resources/technical-briefs/basic-automatic-transfer-switch-functions.jsp
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