When your operation requires mission-critical power, few names carry as much weight as Cummins. Known globally for engineering excellence and relentless durability, Cummins power generation systems are the gold standard for hospitals, data centers, and industrial facilities.

At Central States Diesel Generators, we are proud to showcase a standout unit currently in our inventory: a Used Cummins DQFAA 750 kW Diesel Generator (CSDG# 4632). With only 792 original hours, this 2007 model offers the perfect intersection of proven reliability and exceptional value.

Whether you are looking to buy a diesel generator for a new facility or need a robust backup for an existing site, this DQFAA package is ready to deliver.

The Heart of a Beast: The Cummins QST30-G5 NR2 Engine

The backbone of the DQFAA model is the legendary Cummins QST30-G5 engine. This isn’t just any motor; it is a 30.5-liter, V12, 4-cycle industrial powerhouse. Generating a staggering 1,490 HP at 1800 RPM, the QST30 is designed for heavy-duty service where failure is not an option.

Why the QST30-G5 Matters:

  • Rapid Load Acceptance: In an emergency, every second counts. The QST30 uses advanced turbocharging and low-temperature aftercooling to provide lightning-fast response to load changes, minimizing voltage dips.
  • Industrial Longevity: This engine family is utilized in some of the world’s harshest mining and power generation environments, with a documented life-to-overhaul of up to 20,000 hours.
  • Tier 2 Reliability: As an EPA Tier 2 emissions-certified engine, it offers a robust mechanical design that is less complex and often easier to maintain than newer Tier 4 Final units, making it a favorite for stationary emergency applications.

Performance Specs: 750 kW of Standby Muscle

The DQFAA package is engineered to provide 750 kW of standby power (or 680 kW of prime power). This makes it an ideal fit for large-scale operations that cannot afford a moment of downtime.

Technical Highlights of CSDG# 4632:

  • Voltage Versatility: Currently configured for 120/208V, the 12-lead generator end is reconnectable to 480V and other common voltages, providing flexibility for your specific site requirements.
  • Superior Control: Equipped with the PowerCommand 2100 digital control panel, providing precise monitoring, protection, and diagnostics.
  • Oversized Generator End: Features an oversized 1,040 kW rated generator end, ensuring the unit runs cooler and handles non-linear loads with ease.
  • Massive Circuit Breaker: Includes a 2500 Amp 100% rated main-line circuit breaker for ultimate circuit protection.

View our full inventory of used generators for sale

Built for the Long Haul: 3,600-Gallon Fuel Tank and Aluminum Enclosure

One of the most impressive features of this specific unit is its fuel autonomy. It comes mounted on a massive 3,600-gallon UL2085 sub-base fuel tank.

For critical facilities, fuel storage is a major concern. A tank of this size ensures that your facility can remain operational for extended periods during a prolonged grid failure without the immediate need for refueling. If you’re concerned about fuel stability during long standby periods, check out our guide on how long diesel fuel lasts and how to store it.

The unit is also housed in a premium aluminum sound-attenuated enclosure. Aluminum construction is superior for outdoor installations as it naturally resists rust and corrosion, ensuring the package remains protected and looking professional for decades. The sound attenuation ensures that despite its 1,490 HP engine, the unit operates quietly enough for noise-sensitive environments.

Why 792 Hours is a Game-Changer

In the world of industrial generators, 792 hours is considered “low hour.” To put that in perspective, these engines are designed to run for tens of thousands of hours. Most of these 792 hours were likely accumulated during routine monthly maintenance exercises rather than active emergency runs.

Buying a low-hour used unit like this DQFAA allows you to acquire Tier 1 equipment at a fraction of the cost of a new 2024 model. While we do carry new Cummins 1000 kW units in stock, this 2007 model provides a massive 750 kW capability for just $135,900.

Quality You Can Trust: Load Tested and Ready

At Central States Diesel Generators, we don’t just broker equipment; we own what we sell. Every generator in our inventory undergoes a rigorous inspection process.

CSDG# 4632 passed a full load test on February 11, 2025. We have the full documentation and inspection checklists available for your review, so you can buy with total confidence knowing exactly how the machine performs under pressure.

Ready to Ship Nationwide

Located at our facility in Waukesha, WI, this unit is ready for immediate shipment. Because we own the inventory, there are no middleman delays. Once the paperwork is finalized, our logistics team can coordinate the transport of this 63,000 lb (total package weight) powerhouse directly to your site.

Conclusion: Don’t Wait for the Next Outage

Reliable backup power is an investment in your business’s continuity. The Cummins DQFAA 750 kW generator offers the power, the fuel capacity, and the legendary reliability of the QST30 engine in a package that is ready to work.

Interested in CSDG# 4632?

  • Price: $135,900
  • Location: Waukesha, WI
  • Status: In Stock / Ready to Ship

Contact Central States Diesel Generators today:

We have multiple units similar to this one in stock and arriving daily. If this isn’t the exact fit for your needs, our team of experienced engineers will help you find the one that is.