ATSs are used to protect critical electrical loads against loss of power. The load’s utility power source is backed up by a generator power source. An ATS is connected to both the utility and generator power sources and supplies the load with power from one of these two sources. In the event that power is lost from the utility power source, the ATS transfers the load to the generator power source. Once the utility power is restored, the load is automatically transferred back to the utility power source.

An intelligence system initiates the transfer when the utility power source fails or falls below a preset voltage. An engine start is then initiated by the generator and the ATS transfers to the generator power source when sufficient generator voltage is available. When the utility power source is restored, the ATS automatically transfers back and the generator will shut down after a time delay. In the event the utility power source fails and the generator power source does not appear, the ATS remains connected to the utility power source until the generator power source does appear. Conversely, if connected to the generator power source and the generator power source fails while the utility power source is still unavailable, the ATS remains connected to the generator power source.

ATSs automatically perform the transfer function, and include three basic elements: main contacts to connect and disconnect the load to and from the source of power; solenoids to make the transfer of the main contacts from source to source and intelligence/supervisory circuits to constantly monitor the condition of the power sources and thus provide the intelligence necessary for the switch and related circuit operation.

MSRP	$1,105.00
Our Price	$451.18
Availability as of 4:48pm 11/21/2009	Shipped from Manufacturer. Allow approximately 2-3 weeks for delivery. Click to Verify Price and Stock
Condition	New and Factory Sealed
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