Cummins RS80 Quiet Connect 80kW Generator 277/480V 3 Phase NG/LP | RS80

The Cummins RS80 Quiet Connect 80kW Generator 277/480V 3 Phase is a commercial-grade standby power solution built for demanding environments. Designed for small businesses, industrial sites, and critical facilities, this 80kW standby generator delivers dependable three phase power with advanced electronic controls, extreme weather capability, and quiet operation.

Engineered in the USA and backed by Cummins’ proven reputation, the RS80 provides seamless backup power when the grid fails. It supports both natural gas and LP propane, giving operators flexibility while maintaining consistent 80kW output across fuel types.

If you require reliable 277/480V 3 phase generator performance for commercial backup power, this model sets the benchmark.

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Cummins 80kW Generator Built for Commercial Backup Power

The Cummins RS80 generator is purpose-built for businesses that cannot afford downtime. Whether protecting manufacturing equipment, medical facilities, agricultural operations, or commercial buildings, this 80kW standby generator ensures operational continuity.

Key Performance Highlights

• Rated Output: 80kW (NG or LP)

• Voltage: 277/480 Volts 3 Phase

• Rated Amperage: 120 Amps

• Frequency: 60 Hz

• Mainline Breaker: 150 Amps

• Decibel Rating: 73 dBA (Sound Level 1 enclosure)

• Wind Rating: Up to 180 MPH

This three phase power system is ideal for facilities running heavy-duty equipment, elevators, HVAC systems, refrigeration units, and commercial machinery.

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Engine Performance and Reliability

At the heart of the Cummins RS80 Quiet Connect 80kW Generator 277/480 Volts 3 Phase NG/LP | RS80 is a 5.9-liter inline 6-cylinder turbocharged and aftercooled engine.

Engine Specifications

• Liquid-cooled design

• Cast-iron block construction

• 1800 RPM operation

• 12-volt starting system (850-amp capacity down to 0°F)

• Spin-on oil filter with relief valve

Liquid-cooled standby generators outperform air-cooled units in high-demand environments. They maintain stable operating temperatures during extended runtime and heavy load conditions.

From a professional standpoint, 1800 RPM generators typically last significantly longer than high-speed models. Lower RPM reduces wear, vibration, and maintenance frequency.

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Extreme Weather Operation Down to -40°F

Many generators fail under extreme conditions. The RS80 does not.

This industrial standby generator is designed to start and operate in temperatures as low as -40°F with proper cold weather accessories. That makes it suitable for northern climates and critical infrastructure applications.

The advanced aluminum enclosure:

• Is powder-coated for corrosion resistance

• Withstands wind loads up to 180 MPH (ASCE 7-10 compliant)

• Provides easy-access service doors

For hurricane-prone or severe-weather regions, this enclosure design adds structural security that many competitors lack.

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PowerCommand 1.1 Control System

The RS80 features the PowerCommand 1.1 control, one of the most trusted electronic control systems in commercial standby generators.

What It Does

• Automatic start and stop

• Output metering

• Fault detection and auto shutdown

• Voltage regulation to ±1%

• Frequency regulation to 0.25% at 60Hz

• NFPA 110 Level 1 capable (with proper installation)

Precise voltage and frequency regulation protect sensitive electronics, motors, and control systems. In commercial backup power installations, this level of regulation prevents equipment damage and ensures compliance.

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277/480V 3 Phase Generator for Industrial Applications

A 277/480V 3 phase generator is typically required for:

• Warehouses

• Manufacturing facilities

• Large office buildings

• Hospitals

• Agricultural operations

• Data centers

Three phase power allows balanced load distribution and supports larger motor loads efficiently. Compared to single-phase systems, it delivers smoother power output and higher energy efficiency.

The Cummins RS80 generator integrates seamlessly into existing three phase power systems with an automatic transfer switch.

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Quiet Connect Generator Technology

The Quiet Connect series is engineered for reduced operational noise without compromising performance.

Sound Level 1 Enclosure Benefits

• 73 dBA operational sound level

• Aluminum construction

• Powder-coated corrosion resistance

• Easy-access service panels

For comparison, 73 dBA is comparable to moderate street traffic. For an 80kW standby generator, this is considered impressively quiet.

This makes it suitable for commercial areas with noise ordinances.

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Fuel Flexibility: Natural Gas or LP Propane

The Cummins RS80 Quiet Connect 80kW Generator 277/480 Volts 3 Phase NG/LP | RS80 supports both natural gas commercial generator applications and LP propane setups.

Fuel Consumption

Natural Gas:

• 1083.5 cu ft/hour (full load)

• 678.7 cu ft/hour (half load)

LP Propane:

• 11.56 gallons/hour (full load)

• 7.23 gallons/hour (half load)

Field-selectable fuel type simplifies installation and future conversion.

From an operational perspective, natural gas is often preferred for permanent commercial installations due to continuous supply access. LP propane offers independence in remote locations. Cummins RS80 Quiet Connect 80kW Generator 277/480V 3 Phase

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Installation and Setup Considerations

For optimal performance:

1. Install on a prepared concrete slab.

2. Pair with a properly rated automatic transfer switch.

3. Ensure fuel supply meets required pressure and volume.

4. Confirm compliance with local electrical codes.

5. Consider cold weather kits for sub-zero climates.

Professional installation is strongly recommended for any industrial standby generator.

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Compliance and Certifications

The Cummins RS80 generator meets key industry standards:

• UL-2200 listed

• U.S. EPA emissions compliant

• IBC Seismic compliant

• NFPA 110 capable

Compliance ensures the standby power solution is suitable for regulated commercial and institutional environments.

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Dimensions and Physical Specifications

• Length: 118.7 inches

• Width: 40 inches

• Height: 58.3 inches

• Weight: 2782 lbs

Due to its size and weight, planning for delivery access and crane placement may be required.

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Expert Insight: When an 80kW Standby Generator Is the Right Choice

In real-world commercial settings, an 80kW standby generator is typically selected when:

• Load demand ranges between 60–75kW continuous

• Multiple large motors operate simultaneously

• Business continuity is critical

• Three phase power is mandatory

A proper load calculation should always be performed before purchasing. Oversizing or undersizing affects efficiency and performance.

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Warranty and Support

Cummins includes a 2-Year Base Warranty for both consumer and commercial applications, with extended coverage options available.

For businesses, extended warranties provide additional operational security and budgeting predictability.

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Why Choose the Cummins RS80 Generator?

• Proven 5.9L turbocharged engine

• Precision PowerCommand 1.1 control

• 277/480V three phase capability

• Quiet Connect sound reduction

• Extreme weather readiness

• Commercial-grade durability

• Dual fuel flexibility

The Cummins RS80 Quiet Connect 80kW Generator 277/480 Volts 3 Phase NG/LP | RS80 stands out as a long-term investment in reliable commercial backup power.

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Conclusion

The Cummins RS80 Quiet Connect 80kW Generator 277/480V 3 Phase is engineered for serious commercial performance. With a liquid-cooled 5.9L engine, advanced PowerCommand 1.1 control, extreme weather capability, and 277/480V three phase output, it delivers dependable standby power when it matters most.

For facilities that require uninterrupted operations, this Cummins 80kW generator provides the durability, precision, and compliance necessary for demanding environments. Contact us 

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1. What fuel types does the Cummins RS80 support?
The generator operates on natural gas or LP propane and is field-selectable.

2. Is the RS80 suitable for commercial buildings?
Yes, it is designed for commercial and industrial standby applications requiring three-phase power.

3. What voltage does this generator provide?
It delivers 277/480 Volts 3 Phase at 60 Hz.

4. How loud is the Cummins RS80 generator?
With the Sound Level 1 enclosure, it operates at approximately 73 dBA.

5. Does it comply with NFPA 110?
Yes, it is NFPA 110 capable with proper accessories and installation.

6. Can it operate in cold climates?
Yes, it is designed to start in temperatures as low as -40°F with appropriate cold-weather equipment.

7. What type of engine does it use?
A 5.9-liter inline 6-cylinder turbocharged, liquid-cooled Cummins engine.

8. What warranty comes with the RS80?
Cummins provides a 2-year base warranty with extended options available.