Trystar line of transfer switches

Apr. 11, 2021

The line of compact, portable automatic transfer switches (ATS) from Trystar, Faribault, Minn., are rated at 200, 400, 600, 800 and 1,200 amps and create a smaller footprint than competitive ATS units, the company says. Designed for applications requiring an automatic transfer of power between mains and backup generators in case of mains power failure, the company’s ATS features an advanced design that eliminates nearly all wiring inside the enclosure to improve reliability and reduce maintenance requirements.

In a typical application, the ATS is connected to a pair of portable generators feeding a single output. Switching between generator A and generator B is fully automatic. If generator A has a failure, or runs out of fuel, generator B is started by the ATS to pick up the load. The presence of a technician on site 24/7 is not required for most situations, the company says.

All models in the ATS line feature dual 480/208V capabilities that can be selected via a touch screen. The ATS touch screen displays event logs including on/off, voltage change, transfers and more. The ATS also can be programmed with pre-set transfer times to switch inputs between multiple generators. Standard features include cam lock input and output connections, dual inputs with a common output and two-wire auto start for portable generators.

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