When you need serious industrial power that won’t let you down, the Used Cummins DQFAA QST30-G5 NR2 Diesel Generator delivers exactly what you’re looking for. With just 792 hours on the clock and EPA Tier 2 compliance, this powerhouse combines Cummins’ legendary reliability with impressive technical specifications that make it perfect for demanding industrial applications.

At Central States Diesel Generators, we’re excited to have this exceptional unit in our inventory, along with several other similar Cummins models ready to ship. Let’s dive into why this generator: and the Cummins brand overall: continues to be a top choice for businesses that can’t afford downtime.

The Cummins Legacy: A Global Powerhouse You Can Trust

Cummins didn’t become a household name in the power generation industry by accident. For over 100 years, this Indiana-based company has been engineering some of the most reliable diesel engines and generators on the planet. Today, Cummins operates in nearly 200 countries and territories, powering everything from backup systems in hospitals to massive industrial complexes.

What sets Cummins apart isn’t just their longevity: it’s their commitment to innovation and quality. They’ve consistently stayed ahead of emissions regulations, developed fuel-efficient technologies, and built engines that can handle whatever you throw at them. When you see “Cummins” on a generator, you know you’re getting equipment that’s been tested in the real world by millions of users across every industry imaginable.

The company’s global service network is another huge advantage. Whether you need parts, maintenance, or emergency repairs, Cummins has certified technicians and genuine parts available virtually anywhere in the world. That’s peace of mind you simply can’t put a price on when your business depends on reliable power.

Technical Excellence: Breaking Down the DQFAA QST30-G5 NR2

Let’s get into the nuts and bolts of what makes this particular generator so impressive. The DQFAA QST30-G5 NR2 isn’t just another diesel generator: it’s a carefully engineered piece of industrial equipment designed to deliver consistent, reliable power for years to come.

Power Output and Performance

This generator delivers 750 kW of standby power and 680 kW of prime power, which translates to 938 kVA and 850 kVA respectively. To put that in perspective, this unit can easily handle the electrical needs of a large manufacturing facility, data center, or hospital complex. Whether you need backup power for critical operations or primary power for remote locations, this generator has the capacity to keep you running.

The unit operates at 60 Hz frequency and maintains rock-solid voltage regulation, making it perfect for sensitive electronic equipment that can’t tolerate power fluctuations.

The Heart of the Machine: QST30-G5 NR2 Engine

Under the hood, you’ll find Cummins’ robust QST30-G5 NR2 engine: a V12 powerhouse that’s built like a tank. This isn’t some lightweight consumer engine; it’s a heavy-duty industrial workhorse with cast iron construction that can handle continuous operation in harsh environments.

Key engine specifications include:

  • V12 cylinder configuration for smooth operation and excellent power-to-weight ratio
  • Turbocharged and low temperature after-cooled for maximum efficiency and power output
  • 1800 RPM operation for optimal balance between power and longevity
  • 30.5-liter displacement providing ample torque across the entire RPM range
  • 14.7:1 compression ratio for efficient fuel combustion

The turbocharging system deserves special mention. By forcing more air into the combustion chambers, the turbocharger allows this engine to produce significantly more power than a naturally aspirated engine of similar size, while the after-cooling system ensures that compressed air enters the cylinders at optimal temperatures for complete combustion.

Fuel Efficiency and Environmental Compliance

One of the standout features of this generator is its EPA Tier 2 compliance, which means it meets strict emissions standards without sacrificing performance. This isn’t always easy to achieve with older generator technology, but Cummins has engineered the QST30 series to deliver clean operation alongside impressive fuel efficiency.

The fuel system can handle a maximum flow of 570 liters per hour (150 US gallons per hour) under full load conditions. In real-world operation, you’ll typically see much better fuel economy, especially during partial load operation: which is how most generators spend the majority of their runtime.

Why the DQFAA Model Stands Out

The DQFAA designation isn’t just a random collection of letters: it tells you exactly what kind of generator you’re getting. This model represents Cummins’ focus on delivering reliable, heavy-duty power generation equipment that can handle both standby and prime power applications.

Robust Construction

The cast iron engine block provides exceptional durability and heat dissipation, while the heavy-duty alternator is designed to handle the electrical loads that would overwhelm lesser generators. This isn’t equipment that’s going to need babying: it’s built to run hard and keep running.

Advanced Control Systems

Modern Cummins generators come equipped with sophisticated control systems that monitor engine parameters, manage load transfers, and provide detailed diagnostics. These systems help prevent problems before they occur and make maintenance much more straightforward.

Service and Support

Because this is a Cummins generator, finding parts and service is never a problem. The QST30 series has been around long enough to prove its reliability, but it’s current enough that parts availability isn’t a concern. Plus, most qualified diesel mechanics are familiar with Cummins engines, so you’re not locked into using only factory-authorized service centers.

Similar Units in Stock and Ready to Ship

The great news is that we don’t just have this one DQFAA unit available. At Central States Diesel Generators, we maintain an extensive inventory of quality used Cummins generators, including several other models that might be perfect for your specific needs.

We currently have similar Cummins diesel generators in stock, including models with different power outputs and configurations. Whether you need something smaller for a backup application or something larger for prime power, we’ve got options that can ship quickly.

Some of our other available Cummins units include different variations of the QST30 series, as well as other proven models like the DFLC KTA50-G3 for higher power applications. Each unit in our inventory has been thoroughly inspected and tested to ensure it meets our high standards for quality and reliability.

The Advantage of Buying Used

Let’s be honest: new industrial generators are expensive. Really expensive. But when you buy a quality used unit like this DQFAA, you get essentially the same performance and reliability at a fraction of the cost. With only 792 hours on this particular unit, you’re looking at a generator that’s barely broken in.

Cummins generators are built to run for tens of thousands of hours with proper maintenance. At 792 hours, this unit has plenty of life left in it: probably decades worth for most applications. You’re getting proven, tested equipment at a price that makes financial sense.

Perfect Applications for the DQFAA QST30-G5 NR2

This generator’s power output and reliability make it ideal for a wide range of applications:

Industrial Facilities: Manufacturing plants, warehouses, and processing facilities that need reliable backup power or primary power in remote locations.

Commercial Buildings: Large office complexes, shopping centers, and mixed-use developments where power outages mean lost revenue.

Critical Infrastructure: Hospitals, data centers, emergency services, and other facilities where power failure isn’t just inconvenient: it’s potentially dangerous.

Remote Operations: Mining sites, oil and gas facilities, construction projects, and other locations where grid power isn’t available or reliable.

Agricultural Operations: Large farms, processing facilities, and livestock operations that need consistent power for critical systems.

Why Choose Central States Diesel Generators

When you’re investing in industrial power generation equipment, the company you buy from matters just as much as the equipment itself. At Central States Diesel Generators, we’ve built our reputation on providing quality used generators backed by knowledgeable service and support.

We thoroughly inspect every unit that comes through our facility, and we stand behind everything we sell. Our team knows Cummins generators inside and out, so we can help you determine if this DQFAA unit is the right fit for your specific application.

Plus, we understand that when you need a generator, you usually need it fast. That’s why we maintain ready-to-ship inventory and work with reliable shipping partners to get your equipment delivered quickly and safely.

Ready to Power Up Your Operations?

The Used Cummins DQFAA QST30-G5 NR2 Diesel Generator represents an outstanding opportunity to add serious industrial power capability to your facility without the new equipment price tag. With its proven Cummins reliability, impressive technical specifications, and low hour count, this generator is ready to provide years of dependable service.

Don’t let power outages or unreliable grid power hold your business back. Contact Central States Diesel Generators today to discuss this DQFAA unit and our other available inventory. Our team can help you determine the right power solution for your specific needs and get you up and running fast.

Ready to take the next step? Give us a call or visit our website at csdieselgenerators.com to learn more about current inventory and shipping options. Your reliable power solution is just a phone call away!