For more information visit: www.eaton.com
IB140036EN
Instruction Booklet
Page
12
Effective: October 2014
O&M Manual for 40-1200A (480/600 Vac) ATC-900 3-Position,
Open/Closed Transition Contactor Based Transfer Switch
Optional Feature 38B: Stainless Steel Cover for Controller
Provides an added level of security by providing a pad lockable
stainless steel cover for use with standard transfer switch logic
controllers and/or associated device panels. These covers func-
tion with Eaton’s ATC series logic controllers and device panels.
The covers are designed for NEMA 1, 3R, 4X, and 12 applica-
tions.
Optional Feature 41: Space Heater With Thermostat
This feature provides a space heater and non-adjustable thermo-
stat. External control power is not required.
Optional Feature 41a: Space Heater With Thermostat-100 Watt
This feature provides a 100 watt (W) space heater with a non-
adjustable thermostat.
Optional Feature 48D: PXG200 Gateway
This Feature provides communication by using Modbus 485 on
the back of ATC-900 controller. The PXG200 Gateway serves as
a communication protocol translator –taking in MODBUS RTU–
and present data via Ethernet TCP/IP or Modbus TCP/IP. The data
can then be accessed via the built-in web server, Power Xpert
software or 3
rd
party building management systems. PXG200
Gateway has a limit of 32 INCOM devices. 24VDC is provided to
PXG200 Gateway via ELC-PS02 power supply.
Optional Feature 48RAC: Remote Annunciator Control
This feature displays status information of a remotely located
ATC-900 controller. The HMI type Remote Annunciator will seri-
ally communicate with the ATC-900 over the Modbus 485 or
Ethernet using a twisted shielded pair cable. The remote annunci-
ator is a user friendly color display that is also a touch screen.
One can interface with up to eight transfer switches with one
annunciator. External 120VAC power supply is required for oper-
ating ATC Remote Annunciator.
Optional Feature 49B: Sensing Isolation Transformer (Up to 600
VAC only
This feature provides 3-phase, 4-wire for Source-1 and Source-2
sensing input on ATC controller for a high resistance grounded
delta system.
Optional Feature 51D1: 50kA CVX Surge Device
This feature gives protection for surge current capacity rating
50kA, upto 480VAC by providing a low impedance surge path to
ground while supporting rated voltage. It provides LED indication.
Optional Feature: 51F1:100kA CVX Surge Device
This feature gives protection for surge current capacity rating
100kA, upto 480VAC by providing a low impedance surge path
to ground while supporting rated voltage. It provides LED indica-
tion.
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 9A and 9B). The
hinges have removable hinge pins to facilitate door removal. Cer-
tain procedures, such as switch mounting, are simplified with the
door removed. The doors are supplied as standard with pad-lock-
able latches/ handles.
Figure 9A. Typical Type 1 Open Transition ATS Enclosure
(Door Closed).
