IB01602017E
For more information visit: www.eaton.com
Instructional Booklet
Effective: July 2010
Page
9
ATC-100 Contactor Based Transfer Switch
32G. Time Delay Neutral (TDN)
This feature provides a time delay in the neutral position
during the transfer and re-transfer operations during which
both the Utility source and the Generator source are dis-
connected from the load circuit. TDN cannot be imple-
mented on a transfer switch using a 2-position contactor.
Jumper selectable at Disable (0 seconds) or Enable (2 sec-
onds).
Available only with 3-position contactor ATS
3.4.2 Optional Features
The following is a list of the optional features for the ATC-100
Controlled ATS.
All features or combinations of features may not
be available on specific ATSs
26M. Generator Utility Sensing
Allows for the switch to operate with generators that have
internal utility sensing. This option comes as a kit that
needs to be field installed.
38.
Stainless Steel Logic Cover
38C. SS ATC-100 Cover
This feature provides a pad-lockable stainless steel cover
for the ATC-100 Controller.
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.
3.5 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 7). 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.
The rear of the enclosure is supplied with teardrop shaped holes in
the top and bottom mounting flanges to facilitate mounting. Cable
entry holes are the responsibility of the customer.
ATS enclosures and all internal steel mounting plates, such as the
power panel mounting plate, go through a pretreatment cleaning
system prior to painting to ensure a durable finish.
The standard ATS enclosure is NEMA 1 Type for general use.
However, a variety of enclosures are available to address almost
any environmental circumstance (see Table 3).
Figure 7. Typical Type 3R Enclosure (Door Closed).
Table 3. Transfer Switch Equipment Enclosures
NEMA TYPE
DESIGN
PROTECTION
Open
Indoor
1
Indoor
Enclosed Equipment
3R
Outdoor
Rain, Ice Formation
12
Indoor
Dust, Dirt, and
Non-Corrosive Liquids