IB01602008E For more information visit: www.eaton.com
Instructional Booklet
Effective: March 2014 Page 17
ATC-300 Breaker Based Transfer Switch
37A. Service Equipment Rated Transfer Switch Without Ground
Fault Protection (30 – 1000 A)
This feature provides Service Equipment rating for an appli-
cation that does not require ground fault protection.
37B. Service Equipment Rated Transfer Switch With Ground Fault
Protection (800 – 1000 A)
This feature provides Service Equipment rating for an appli-
cation that requires ground fault protection.
38. Stainless Steel Covers
Provides an added level of security by providing a pad
lockable stainless steel cover for use with standard trans-
fer switch logic controllers and/or associated device pan-
els. These covers function with Eaton Eaton’s ATC series
logic controllers and device panels. The covers are
designed for NEMA 1, 3R, 4X, and 12 applications.
39. Feeder Breakers
39A. Two 200 A Feeder Breakers
This feature provides two (2) 200 A feeder breakers for
the 200 A ATH3 transfer switch.
39B. Three 200 A Feeder Breakers
This feature provides three (3) 200 A feeder breakers for
the 300 A ATH3 transfer switch.
39C. Four 200 A Feeder Breakers
This feature provides four (4) 200 A feeder breakers for
the 400 A ATH3 transfer switch.
41. Space Heater With Thermostat
This feature provides a space heater and non-adjustable
thermostat. External control power is not required.
41A. Space Heater With Thermostat - 100 Watt
This feature provides a 100 watt (W) space heater with a
non-adjustable thermostat.
51D1. 50kA CVX Surge Device
This feature gives protection for surge current capacity rat-
ing 50kA, upto 480VAC by providing a low impedance
surge path to ground while supporting rated voltage. It
provides LED indication.
51F1. 100kA CVX Surge Device
This feature gives protection for surge current capacity
rating 100kA, upto 480VAC by providing a low imped-
ance surge path to ground while supporting rated voltage.
It provides LED indication.
3.6 Enclosure
The rugged steel ATS enclosure is supplied with three door
hinges, regardless of enclosure size. They ensure proper support
of the door and door mounted devices (Figure 16). The hinges
have removable hinge pins to facilitate door removal. Certain pro-
cedures, such as switch mounting, are simplified with the door
removed. The doors are supplied as standard with pad-lockable
latches.
Figure 16.Typical Type 1 Enclosure (Door Closed).
The door is used to mount a variety of lights, switches, and push-
buttons, depending upon the options required for a particular ATS.
All lights and switches are mounted in the plastic door-mounted
panel.
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