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Cummins Power Quiet Connect 40kW Liquid Cooled Standby Generator Three Phase RS40

by Cummins
Save 3%
Original price $14,310.00
Current price $13,870.00

1800 RPM, Field-selectable fuel type: Natural Gas or Propane

Available in the following Three Phase Voltages:

120/208V p/n A051Y420

120/240V p/n A051Y421

277/480V p/n A051Y424

Advanced Enclosure Design - The aesthetically appealing enclosure incorporates special designs that deliver the quietest generator of its kind. Aluminum material plus durable powder coat paint provides the best anti-corrosion performance.  The robust design is capable of withstanding winds up to 150 MPH and the intelligent design has removable panels and service doors to provide easy access for service and maintenance.

Fexible Exercise Mode - The innovative, flexible exercise mode enables the generator to exercise at a time, frequency and duration that suits the customer's preference - as little as 2 minutes every 6 months - reducing unnecessary fuel consumption, emissions and noise.

Self diagnostics and easy service - The generator is equipped with Cummins PowerCommand electronic control to provide industry-leading self diagnostic capabilities.  In addition, critical components of the generator are designed to ensure service and preventative maintenance can be completed in a short period of time.

Proven Alternator - Brushless CA series alternator for improved reliability.  Heavy-duty industrial design for robust performance.

Feature-Rich Control - PowerCommand 1.1 control with 128 x 64 backlit LED display for improved user experience.  Current and power metering for load analysis.  Exerciser function for improved dependability.  Electronic overcurrent protection for improved reliability.

Reliable Engine - Cummins QSJ2.4 engine for reliable power.  Four-cycle spark-ignited for improved power.  Closed-loop electronic fuel system for improved performance. 1800 RPM.

Factory Installed Coolant Heater, Battery Rack and Flexible Fuel Line Included.

Picture displays enclosure with Sound Level 2 Upgrade Kit, sold separately.

EPA Compliant, not for sale to California


      • Reliable Cummins Engine - QSJ2.4 engine for reliable power
      •  Robust Product Design and Testing
      • Flexible Exercise mode duration that suits the customer's preference - as little as 2 minutes every 6 months
      • Advanced Enclosure Design capable of withstanding winds up to 150 MPH
      • Self diagnostics and easy service
      • Control Systems - PowerCommand 1.1 control with 128 x 64 backlit LED display for improved user experience
      • Brushless Proven Alternator
      • Sound Attenuated - aluminum enclosure material plus durable powder coat paint
      • Limited Base Warranty - 2 Years/400 Hours Standby

      Spec Sheet

      Model Number
      MFG Part No. A051Y420, A051Y421, A051Y424
      Manufacturer Cummins Power Generation
      Made In USA Yes
      Rated Watts 40kW
      Rated Amps 208V/138.8 or 240V/120.4 or 480V/60.2
      Voltage 3 Phase 208V or 240V or 480V
      AC Ton Rating Multple Units
      Enclosure Aluminum
      UL Listed Yes
      Decibel Rating 7m 63 dbA w/Sound Level 2 Upgrade Kit
      Type Standby Generator
      Series Name Quiet Connect
      Starting System Automatic Start
      Low Oil Alert Yes
      Hour Meter Yes
      Battery Requirements 12V Group 26 545 CCA Not Included
      Mounting Pad Requires Prepared Site
      Weight 1356 lbs
      Dimensions 94L x 34W x 45.5H
      Engine Brand Cummins Onan
      Engine Size 2.4L
      Engine RPM 1800
      Cooling System Liquid Cooled
      Alternator Type Brushless
      Frequency 60 Hz
      Auto Voltage Regulation Yes
      Type Natural Gas (NG) / Propane (LP)
      Gauge 0
      NG Power Capacity 40kW
      LP Power Capacity 40kW
      NG Consumption Full Load 519 cu.ft/hr
      NG Consumption Half Load 304.7 cu.ft/hr
      LP Consumption Full Load 5.4 gal/hr
      LP Consumption Half Load 3.4 gal/hr
      Transfer Switch
      Model Sold Separately
      Warranty Information
      Consumer Warranty 2 Years Limited Warranty
      Shipping Information
      Shipping Dimensions 57H X 102W X 40D
      Shipping Weight 1726 lbs

      Download Manuals

      Operator's Manual

      Installation Manual 

      Specification Sheet

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