When dependable power is essential, a high-capacity diesel generator must deliver more than a nameplate rating. It needs a proven engine, robust electrical equipment, strong cooling performance, fuel capacity for extended operation, and a documented maintenance and testing history.
The Used Cummins DQGAB 1500 kW diesel generator, CSDG# 4600, brings those characteristics together in a substantial industrial power package. This 2011 generator has only 770 operating hours, produces 1500 kW of standby power and 1350 kW of prime power, and is powered by the well-established Cummins QSK50-G4 V16 diesel engine.
Located in Waukesha, Wisconsin, this low-hour Cummins diesel generator is listed at $359,900 and is available for businesses and organizations that need serious standby or prime power capacity.
A Cummins diesel generator built for demanding applications
Cummins has earned a global reputation for engineering dependable engines and power-generation systems for some of the most demanding operating environments. Cummins equipment is used in data centers, hospitals, manufacturing facilities, mining operations, telecommunications installations, commercial buildings, and other locations where a power interruption can create significant operational or financial consequences.
That reputation comes from decades of experience developing heavy-duty engines, alternators, control systems, and complete generator packages. Cummins products are known for durable construction, broad service support, and the ability to operate under demanding loads when properly installed and maintained.
For buyers searching for a Cummins diesel generator for sale, the DQGAB package offers the benefits of a respected brand without the cost of a comparable new generator. Its low operating hours make it particularly attractive for facilities looking for a used industrial generator with substantial remaining service life.
View the complete Cummins DQGAB CSDG# 4600 listing
QSK50-G4: A proven 50.3-liter V16 engine
At the center of this generator set is the Cummins QSK50-G4, a large-displacement engine designed for high-output industrial power generation.
Key engine specifications include:
- V16 configuration
- 50.3-liter displacement
- 2220 HP
- 1800 RPM
- Turbocharged design
- Low-temperature aftercooling
- EPA Tier 2 emissions certification
The QSK50-G4’s V16 configuration and large displacement provide the engine capacity needed to support substantial electrical loads. Rather than relying on a smaller engine operating near its limits, this platform is designed for heavy-duty generator applications where load stability and long-term durability are priorities.
This type of engine is well suited for facilities such as:
- Data centers and telecommunications sites
- Hospitals and healthcare campuses
- Heavy industrial facilities
- Manufacturing plants
- Mining and aggregate operations
- Airports and transportation infrastructure
- Large commercial buildings
- Prime-power installations
The engine’s turbocharged and low-temperature aftercooled design helps support efficient air handling and reliable performance under demanding conditions. This DQGAB package also includes high-ambient engine cooling, an important feature for installations where elevated temperatures may affect engine and radiator performance.
For additional technical background, buyers can review Cummins’ QSK50-G4 engine information.
1500 kW standby power with extra generator-end capacity
The Cummins DQGAB is rated for:
- 1500 kW standby power
- 1350 kW prime power
- 1612 kW oversized generator end
The oversized generator end provides additional capacity within the alternator system and contributes to a package designed with useful electrical headroom. The generator is configured for 3-phase, 60 Hz operation at 277/480 volts, with a 12-lead reconnectable alternator that can be configured for other voltages when appropriate for the installation.
Additional electrical and control features include:
- 2500-amp main-line circuit breaker
- PMG permanent magnet generator
- UL 2200 listed package
- PowerCommand digital control panel
- Battery charger
- Coolant heater
The PowerCommand digital control panel helps operators monitor and manage generator functions, while the PMG design supports excitation performance and voltage regulation. The combination of a high-capacity alternator, large circuit breaker, and digital controls makes this package suitable for substantial commercial and industrial electrical systems.
5181-gallon UL2085 fuel tank for extended runtime
One of the most notable features of CSDG# 4600 is its 5181-gallon UL2085-listed sub-base fuel tank.
For a large diesel generator, fuel storage is a major part of operational planning. A generator can only provide extended backup power if the site has an adequate fuel supply, and a large integrated tank can reduce the need for frequent refueling during prolonged outages.
This tank includes secondary containment, providing an additional layer of protection for the installation and helping support fuel-storage requirements. With more than 5,000 gallons of capacity, the package is designed for extended operation and can support long-duration backup power: potentially spanning multiple days depending on the connected load, fuel consumption, operating conditions, and required reserve levels.
Fuel planning should always be completed by the installing contractor or facility engineer. Load profile, ambient temperature, generator efficiency, local regulations, and fuel-delivery logistics will all affect actual runtime.
Sound attenuation for a more practical installation
Large diesel generators produce significant mechanical and exhaust noise. This Cummins DQGAB includes a sound-attenuated enclosure, helping reduce operating noise compared with an open-skid configuration.
A sound-attenuated enclosure can be valuable for installations near:
- Hospitals and medical offices
- Hotels and multifamily properties
- Office and commercial buildings
- Schools and campuses
- Residentially adjacent industrial facilities
- Data centers and telecommunications sites
The enclosure also helps protect the genset from weather exposure and provides a more finished installation profile. Site-specific ventilation, exhaust, clearance, foundation, and sound requirements should be reviewed before purchase and installation.
Only 770 hours on a 2011 generator
Age alone does not tell the complete story of a used generator. Operating hours, maintenance history, testing, storage conditions, and overall configuration are all important when evaluating a used industrial generator.
This 2011 Cummins DQGAB has just 770 hours, making it a low-hour find for its size and age. For buyers comparing a used 1500 kW diesel generator with newer or higher-hour alternatives, the relatively low operating time may offer an attractive balance of price and expected service life.
The unit also passed a load test on January 3, 2025, and the associated inspection and load-test documentation is available for review. Documentation gives prospective buyers a clearer understanding of the generator’s recent performance and supports a more informed purchasing decision.
Download the Cummins DQGAB load-test report and inspection checklist
Package dimensions and shipping information
Because this is a 1500 kW industrial generator, transportation and installation planning are important. The listed dimensions and weights are:
Enclosure with genset
- 150 inches wide
- 397 inches long
- 153 inches high
- 51,000 pounds
Fuel tank
- 144 inches wide
- 397 inches long
- 37 inches high
- 25,389 pounds
The generator is located in Waukesha, WI, and is offered FOB Waukesha. Central States Diesel Generators can work with buyers and logistics providers to help coordinate nationwide shipping and provide the information needed for transportation planning.
Other Cummins QSK50 generators in stock
CSDG# 4600 is not the only high-capacity Cummins generator available through Central States Diesel Generators. We also have other similar units in inventory, including additional QSK50 models such as the DQGAA 1250 kW and DFLC packages.
Availability changes quickly, but these units give buyers additional options when they need:
- A different kW rating
- A different package configuration
- Another voltage arrangement
- A replacement for an existing QSK50-powered generator
- Multiple generators for a large facility or project
- A high-capacity diesel generator ready for nationwide shipment
Central States Diesel Generators owns the inventory it advertises. That means customers can receive accurate information about the equipment’s location, condition, specifications, and availability: without relying on a third-party listing or a middleman.
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Get pricing and availability for CSDG# 4600
The Used Cummins DQGAB 1500 kW diesel generator is a strong option for facilities that need high-capacity standby or prime power in a proven, low-hour package. With a Cummins QSK50-G4 V16 engine, 1500 kW standby rating, sound-attenuated enclosure, oversized generator end, PowerCommand controls, UL-listed fuel storage, and documented load testing, this generator is prepared for serious commercial and industrial applications.
The listed price is $359,900, FOB Waukesha, WI. Similar Cummins QSK50 generators are also in stock and ready to ship nationwide, subject to prior sale.
To take the next step:
- Request more information about Cummins DQGAB CSDG# 4600
- Contact Central States Diesel Generators for pricing, documentation, or shipping assistance
- Browse current generator inventory
- Ask for help selecting the right backup or prime-power solution
For businesses searching for a low-hour Cummins diesel generator, a used 1500 kW generator, or an industrial backup generator ready for deployment, CSDG# 4600 deserves close consideration.
