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Automatic transfer panel configurations

Dedicated emergency standby service system (100 A)

Options and accessories

  • Battery, 12 V, 325 cca (P/N 416-0774)

  • Battery heater kit (P/N 333-0469)

  • LCD Display Interface (P/N 0179-4861-05)

  • Full line of complementing automatic transfer panels

Full-service rating standby system (200 A)

Housing features

  • Weather protective design, two easy service access

doors - key-lockable

  • Internal starting battery tray and tie down

  • Heavy-duty aluminum housing

Testing and standards

  • -

    Listed to UL 2200

  • -

    This generator set was designed and manufactured in facilities certified to ISO 9001.

  • -

    CSA-certified for electrical equipment. Meets CSA C22.2.

  • -

    Engine certified to U.S. EPA SI Stationary Emission Regulation 40 CFR, Part 60


Warranty policy

The Cummins Onan RS 20000 home standby system comes with a standard two year warranty. Additional two and five-year warranty options are available. See your certified distributor or dealer for details.

This product is EPA Emissions certified for emergency standby use only.




Standby rating based on: Applicable for supplying emergency power for the duration of normal power interruption. No sustained overload capability is available for this rating. (Equivalent to fuel stop power in accordance with ISO3046, AS2789, DIN6271 and BS5514 ). nominally rated.

Back feed to a utility system can cause electrocution and/or property damage. Do not connect to any building electrical except through an approved device or after building main breaker is open.

(See T-030 document for more information.)

After sale support

Largest distributor/dealer support network Cummins Onan generator sets are supported by the largest and best trained worldwide certified distributor/dealer network in the industry. This network of knowledgeable Cummins Onan distributor/dealers will help you select and install the right generator set and accessories to meet the requirements of your specific application. This same network offers a complete selection of commonly used generator set maintenance parts, accessories, and products plus manuals and specification sheets. Plus, they can answer your questions regarding proper operation, maintenance schedules and more.

Manuals: Operation and installation manuals ship with the generator set. To obtain additional copies or other manuals for this model, see your Cummins Onan distributor/dealer and request the following manual numbers: Operation (961-0117), Installation (961-0615), Parts (961-0214), Service (961-0510).

To easily locate the nearest Cummins Onan distributor/dealer in your area, or for more information, contact us at 1-800-888-6626 (or 763-574-5000), or visit www.cumminsonan.com.

Contact your distributor/dealer for more information.

Cummins Power Generation 1400 73rd Ave. NE Minneapolis, MN 55432 USA Phone 1 763 574 5000 Toll-free 1 800 888 6626 Fax 1 763 574 5298 Email www.cumminsonan.com/contact www.cumminsonan.com

©2009 Cummins Power Generation. All Rights Reserved. Cummins®, Onan®, the "C" logo and Performance you rely on.TM are servicemarks, trademarks and/or registered trademarks of Cummins Inc. Specifications are subject to change without notice A-1492b (5/09)

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