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When a compact automatic transfer switch is installed in a distribution panel, one of the most important questions is not simply which ATS current rating to choose. The panel designer…

Dual-Source ATS Selection for B2B Projects A dual power automatic transfer switch transfers a load between two alternative power sources. But “dual power” alone is not enough to specify the…

ATS Cabinet Design for Panel Builders Designing an ATS cabinet around a compact integrated automatic transfer switch is mainly an integration task: the panel builder must provide correct source and…

An automatic transfer switch in a main distribution board should be selected as part of the complete power-distribution design, not as an isolated switch. For panel builders, electrical contractors, generator…

Compact ATS Integration Guide For compact low-voltage distribution panels, an automatic transfer switch is usually selected to transfer a defined load between two sources such as the utility supply and…

When an automatic transfer switch supplier sends an IEC, CE, CB or UL document, the important procurement question is not simply whether the file looks official. The buyer needs to…

Engineering Selection Guide A CB Class automatic transfer switch is defined by more than automatic source transfer. Its key engineering distinction is the ability to make and break short-circuit current…

Critical Power Application Guide A closed transition ATS, also called a closed transition transfer switch or CTTS, uses a controlled make-before-break sequence. When two power sources are available and suitably…

Commercial & Compact Backup Power Guide An open transition ATS, also called an open transition automatic transfer switch, disconnects the load from one source before connecting it to the alternate…

Choosing an automatic transfer switch instead of a manual transfer switch is not simply a question of buying the more advanced device. For a generator panel, commercial building, factory, control…