Automatic transfer switches (ATS) are critical components of any emergency or standby power system. Transfer switches are reliable, rugged, versatile and compact assemblies for transferring essential loads and electrical distribution systems from one power source to another.
A Withstand Closing Current Rating (WCR) represents a transfer switch's capability to ride out a fault condition until the overcurrent protection device clears the fault. View the video for more information.
Choosing a transfer switch
Learn more about contributing factors when choosing a transfer switch for a critical power application. View the video for more information.
NEC code change for an engine-generator remote start circuit
There has been a recent change to the 2017 edition of the National Electrical Code for an engine-generator remote start circuit in an emergency system.
Short-circuit WCRs
The Short-Circuit WCR is the UL 1008 test for a transfer switch’s ability to close into and withstand a fault current. These are the ratings which will actually appear on the UL label of the product.
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