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. A Bypass Isolation Transfer Switch may be used to provide emergency power to life safety and other critical loads where maintenance of the main transfer switch, without interruption of power to the load, is either desirable or required.

Available Logic Controllers

• ATC-300 Controller
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• ATC-800 IQ Controller
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Contactor Bypass Isolation ATS Video

Electrical Ratings

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

Industrial Design Highlights

• Front access is a standard feature on all ratings
• Entry:
• Top, bottom or both
• Isolated compartments
• Improved safety:
• Isolated compartments with barriers
• Single motion rack-out with doors closed
• Ability to test powerswitching elements during draw-out process
• Dual ATS capability - Bypass contactor can be controlled by the ATS controller in the bypass mode of operation
• Installation flexibility:
• Field Entry/Exit locations can be modified in the field
• Interchangeable drawout contactors
• Field-selectable multi-tap transformer panel permits operation on a wide range of system voltages

Standard Features

• Draw-out cassette design on both ATS and Bypass
• No service interruption in Bypass to the same source
• Switch position contacts:
• Source-1 Position 1-N.O. and 1-N.C.
• Source-2 Position 1-N.O. and 1-N.C.
• Source-1 and Source-2 sensing:
• Undervoltage/underfrequency
• Overvoltage/overfrequency
• 3-phase rotation protection*
• 3-phase voltage unbalance/loss*
• Pre-transfer signal contacts1-N.O. and 1-N.C.
• Go to Source-2 (EMERGENCY)
• Field-programmable time delays:
• Time Delay Engine Start: 0 – 1200 seconds
• Time Delay Normal to Emergency: 0 – 1800 seconds
• Time Delay Emergency to Normal: 0 – 1800 seconds
• Time Delay Engine Cooldown: 0 – 1800 seconds
• Time Delay Emergency Failure: 0 – 6 seconds
• LCD-based display for programming, system diagnostics and Help Menu 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 failsafe

*Note: ATC-300 only.

Optional Features

• Available Surge Protection Device (SPD) for power/controller, engine start circuit, phone and cable connections
• Automatic transfer operation with selectable (via programming) non-automatic or automatic retransfer with failsafe
• Space heater with thermostat
• Digital multi-function power quality metering
• Stainless steel cover for controller
• Load sequencing contacts