Specifications

February 2007
CA08101001E For more information visit: www.eaton.com
16-13
Transfer Switches
16
Transfer Switch Equipment
Wall-Mount Transfer Switches
Wall-Mount Transfer Switches
Contactor, Molded Case and
Circuit Breaker Design
Wall-Mount Transfer Switch
Product Description
Eaton’s Cutler-Hammer Wall-Mount
Transfer Switches are designed for a
variety of standby power applications
for critical loads. They provide flexibility,
reliability and value in a compact pack-
age. In the event of a primary power
source interruption, a transfer switch
provides an effective means to transfer
the load circuits to an alternate power
source while reducing the possibility
of injury or property damage.
Wall-Mount Transfer Switches meet
or exceed all industry standards for
endurance, reliability and performance.
They are listed under Underwriters
Laboratories UL 1008 Standard for
Transfer Switch Equipment and
optionally available as suitable for
emergency and standby systems as
defined in NFPA 99 for health care
facilities.
ATC-300 Automatic Transfer Switch
shown above.
Electrical Ratings
■ Molded case and circuit breaker
30 – 1000 amperes.
■ 2-Position Contactors 100, 200,
320, 400 and 600 amperes.
■ 3-Position Contactors 100, 200,
300, 400, 600, 800, 1000 and
1200 amperes.
Note: For 3-position contactors,
contact factory.
■ 2-, 3- or 4-poles.
■ Up to 600 Vac, 50/60 Hz.
■ NEMA 1, 3R, 12, open.
■ Suitable for emergency and standby
systems (all loads).
■ UL 1008 listed.
■ CSA C22.2 No. 178 certified.
Industrial Design Highlights
■ Double-throw, mechanically inter-
locked transfer mechanism.
■ High withstand and closing ratings.
■ Seismic Zone 4 qualified (BOCA,
CBC, IBC, UBC).
Standard Features
■ Auxiliary relay contacts:
❑ Source 1 present 2NO and 2NC
❑ Source 2 present 2NO and 2NC
■ Switch position indication 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 diagnostic 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.
■ Safe manual operation under full
load with permanently affixed
operating handle.
Note: Not available on Contactor Transfer
Switch.
Optional Features
■ Suitable for use as service equipment
in the standard enclosure size.
Note: Not available on Contactor Transfer
Switch.
■ Available TVSS for power/controller,
engine start circuit, phone and cable
connections.
■ Integrated distribution panels.
Note: Not available on Contactor Transfer
Switch.
■ Field-selectable multi-tap transformer
panel permits operation on a wide
range of system voltages.
■ Integral overcurrent protection.
Note: Not available on Contactor Transfer
Switch.
■ Space heater with thermostat.
■ Ammeter — load side.
■ Stainless steel cover for controller.