Automatic Transfer Switches

Product Description:
Eaton's Automatic Transfer Switch is designed to provide unmatched performance, reliability and versatility for critical standby power applications. The switches can be equipped with the ATC-300 or ATC-800 controllers to match your application needs. All the controllers offer rock-solid monitoring, status reporting and transfer control operation. Superior design and robust construction make Eaton's transfer switch the industry benchmark for critical and distributed power systems.

Available Logic Controllers

• ATC-300 Controller
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• ATC-800 IQ Controller
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Electrical Ratings

• Ratings 40, 100, 150, 200, 225, 260, 400, 600, 800, 1000 and 1200 amperes
• 2, 3 or 4-poles
• Up to 600 Vac, 50/60 Hz.
• NEMA® 1, 3R, Open
• UL® 1008 listed
• CSA® C22.2 No. 178 certified

Industrial Design Highlights

• Double-throw, mechanically interlocked transfer mechanism, preventing connection of both sources
• Field-selectable multi-tap transformer panel permits operation on a wide range of system voltages
• High withstand and closing ratings
• Compact design

Standard Features

• Switch position contacts:
• Source 1 Position 1NO and 1NC
• Source 2 Position 1NO and 1NC
• Source 1 and Source 2 sensing:
• Undervoltage/underfrequency
• Overvoltage/overfrequency
• 3-phase rotation protection
• 3-phase voltage unbalance/loss
• Pre-transfer signal contacts 1NO/1NC
• Go to Emergency (Source 2)
• Seven field-programmable time delays
• LCD-based display for programming, system diagnostics and Help message display
• Mimic diagram with source available and connected LED indication
• Time-stamped history log
• System test pushbutton
• Programmable plant exerciser - OFF, daily, 7, 14, 28-day interval selectable run time 0 - 600 minutes no load/load with fail-safe

Optional Features

• Available surge suppression device for power/controller, engine start circuit, phone and cable connections
• Space heater with thermostat
• Ammeter - load side
• Power quality metering
• 2 and 4 position switch
• Stainless steel cover for controller
• Open in-phase transition or time delay neutral transition

Optional Features (ATC 800 only)

• Closed transition
• Remote communications
• Load shed from emergency
• Selected automatic or non-automatic operation