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IB140012EN
For more information visit: www.eaton.com
Instructional Booklet
Effective: March 2021
Page
11
Operation and Maintenance Manual,
Automatic Transfer Switch Controller, ATC-900
2.6 Specification Summary
Refer to Table 3.
Table 3. ATC-900 Specifications.
Figure 6. Dimensions. Depth of 3.60 inches with DCT module installed.
PARAMETER
SPECIFICATION
Power Isolation Requirements:
• Control power for Source 1, J7-1,2 must be electrically isolated from control power for Source 2, J7-3,4.
• Similar for accessory I/O Module on J1-1,2 and J1-3,4 for S1 and S2 respectively.
Control Power:
• 120 Vac (50/60 Hz)42mA-ac (operating range 65 to 160 Vac) or 24 Vdc (+/- 20%) at 213mA-dc with DCT Module
Power Consumption:
• 20 VA
Environmental Conditions:
Operating Temperature
• -4.0 to 158 F (-20° to 70°C)
Storage Temperature
• -22°F to +176°F (-30°C to +80°C)
Operating Humidity
• up to 90% Relative Humidity (non-condensing)
Enclosure Compatibility:
• NEMA 12 (standard mounting)
• NEMA 4/4X (mounted with gasket between panel and device faceplate)
• NEMA 3R (outdoor)
• UV Resistant ATC-900 Faceplate
System Voltage Application:
• 120 to 600 Vac (50/60 Hz) (single or three phase)
Voltage Measurements:
• Source 1, Source 2 and Load (VAB, VBC, VCA for Three-Phase System)
Voltage Measurement Range:
• 0 to 720 VAC RMS
Voltage Measurement Accuracy:
• ±1%
Frequency Measurements:
• Source 1 and Source 2
Frequency Measurement Range:
• 40 to 80 Hz
Frequency Measurement Accuracy:
• ±0.2 Hz
Applicable Testing:
• UL Recognized Component including the I/O and DCT Modules
• Meets Seismic Requirements of Uniform and California Building Codes
(exceeding requirements of worst case Zone 4 levels) 3rd Quarter 2014
• Complies with UL 991 environmental tests
• Complies with IEC 61000-4-2, 61000-4-3, 61000-4-4, 61000-4-5, 61000-4-6, and 61000-4-11
• Complies with CISPR 11, Class B
• Complies with FCC Part 15, Subpart B, Class A
Front view
Side view
Top view
5.00 (127.0)
3.63 (92.1)
6.72 (170.7)
10.25
(260.4)
.50 (12.7)
2.10 (53.4)
9.31
(236.5)