Page last updated Oct 20, 2021 @ 10:10pm

EGSU100ACA, EGSU100NSEACA, EGSU100L24RACA,
EGSU150NSEACA, EGSU200ACA,
EGSU200NSEACA, EGSU400NSEAC

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Eaton-EGSU-open.jpg (47005 bytes)
view with door open brochure manual for RTC-100 controller
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"Green" Automatic Transfer Switch
100A, 150A, 200A, 400A, 120/240V, 1-phase
generator exerciser, load management circuits

 

Overview

Eaton's GREEN Automatic Transfer Switches (ATS), when used in conjunction with a standby generator, guarantee reliable, seamless power when outages occur. They automatically transfer the load to the generator when utility power fails, providing the highest protection for continuous power. Eaton’s GREEN ATS provides a unique and truly active load management system which intelligently manages loads. By using this technology, consumers can maximize the output of the generator, reduce upfront costs, reduce fuel consumption, and reduce greenhouse gas emissions; a truly environmentally-friendly transfer switch.

Standard and Certifications
• UL Listed – Fully compliant with UL 1008
• Meets 2008 NEC Article 702.5 requirements

Product Features and Benefits:
• Unique load management strategy, and advanced active load management system
• Universal switch that works with any Eaton or competitive generator
• Whole house surge included with every switch (Cat # CHSPT2ULTRA, UL 1449 3rd Edition compliant)
• 100A, 150A, 200A and 400A offerings
• NEMA 3R Standard
• Service Entrance Rated available. Standard on 150A and 400A

Additional Information
The GREEN ATS features a new RTC-100 controller, in compliance with the 2008 NEC 702.5 code, Part B, which states: "Load Management: Where a system is employed that will automatically manage the connected load, the standby source shall have a capacity sufficient to supply the maximum load that will be connected by the load management system." The RTC-100 constantly monitors and manages up to (2) large loads (such as air conditioner units), preventing the generator from being overloaded. By complying with this requirement, the RTC-100 controller allows the homeowner to safely maximize the capacity of their generator, and avoid excessive expenditure on a larger generator that would have otherwise been sized to the full connected load.

Contactor Boxes (for loads over 5 amps):
These contactor boxes are used in conjunction with the load management control when in-line relays are required to start/stop
appliances larger than 5 amps.  Use a contactor with coil rated for the external supply voltage of 12V to 120V ac or dc.  For additional details about contactor relay go to this page.

Specifications

Switch Current Ratings 100 Amps, 2 pole utility and 2 pole generator (EGSU100ACA, EGSU100NSEACA, EGSU100L24RACA)
150 Amps, 2 pole utility and 2 pole generator (EGSU150NSEACA)
200 Amps, 2 pole utility and 2 pole generator (EGSU200ACA, EGSU200NSEACA)
400 Amps, 2 pole utility and 2 pole generator (EGSU400NSEAC)
Voltage Rating 120/240V, 1 phase, 60Hz standard
Service Entrance Disconnect
(on these models only)
100 Amps (EGSU100NSEACA)
150 Amps (EGSU150NSEACA)
200 Amps (EGSU200NSEACA)
400 Amps (EGSU400NSEAC)
Branch Circuit Space
(on this model only)
24 full height breaker poles (EGSU100L24RACA)
Load Control Contact Rating maximum 5 Amps @ 250 V
when using with contactor pick coil rating that matches external supply voltage of 12V to 120V ac or dc
Control Features (see note 1)

KEY:
P.U. = pickup
D.O. = dropout
Function Factory Setting
start time delay 6 sec fixed
transfer time delay 20 sec (can be changed to 50 sec via jumper)
retransfer time delay 10 sec fixed
emergency fail time delay 6 sec fixed
cool down delay 300 sec fixed
voltage sensing of utility 80% of 240V P.U.
70% of 240V D.O. with 6 sec delay
voltage sensing of generator 80% of 240V P.U.
70% of 240V D.O. with 6 sec delay
Exerciser Clock field selectable for off, 7, 14, 28 day exercising with or without load transfer (jumper selectable)
Enclosure NEMA 3R outdoor rated which can also be used indoors
UL Withstand & Closing Ratings 10,000 Amps (EGSU100ACA, EGSU100L24RACA, EGSU200ACA)
25,000 Amps (EGSU100NSEACA, EGSU150NSEACA, EGSU200NSEACA)
35,000 Amps (EGSU400ACA)
Contactor Wire Size Ranges
(per pole)
#14 to #2/0 AWG (EGSU100ACA, EGSU100NSEACA, EGSU100L24RACA)
#4 to 300MCM (EGSU150NSEACA, EGSU200NSEACA, EGSU200ACA)
(1)750MCM or (2)1/0 to 300MCM (EGSU400ACA)
Nominal Dimensions (W x H x D) 14.5" x 16.9" x 5.3" (EGSU100ACA, EGSU100NSEACA)
14.5" x 29.3" x 5.3" (EGSU100L24RACA, EGSU150NSEACA, EGSU200NSEACA)
14.5" x 25.1" x 5.3" (EGSU200ACA)
23.1" x 37.6" x 10.0" (EGSU400ACA)
Weight 25 to 130 lbs. depending on model

NOTES:
1) The start time delay prevents nuisance generator starts during momentary utility power variations; transfer time delay allows generator set to stabilize before load is applied; retransfer delay prevents needless power interruption if return of utility power is momentary; stop delay allows gradual generator set cool down; undervoltage sensing of utility supply provides reliable starting of generator set during brownout conditions.
2) If this switch is purchased with the built-in service entrance disconnect this generally means that you do not need another service entrance rated disconnect between this switch and your utility meter.

 

 

 

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