When dependable backup power is essential, the generator package must offer more than a nameplate rating. It needs a proven engine, robust electrical equipment, practical installation features, and the support of an established manufacturer. The new Cummins DFEK diesel generator listed by Central States Diesel Generators delivers that combination in a zero-hour, 2026 package rated for 500 kW standby power and 455 kW prime power.
CSDG inventory number 4317 is available for $149,900 and is located in Waukesha, Wisconsin. It is a new Cummins DFEK package powered by a Cummins QSX15-G9 engine, with a sound-attenuated enclosure, high-capacity sub-base fuel tank, PowerCommand digital controls, and a two-year/1,000-hour limited Cummins warranty.
For companies seeking a new Cummins diesel generator, this 500 kW unit offers the capacity and configuration needed for commercial standby, industrial backup power, and other demanding applications.
Cummins reputation in industrial power generation
Cummins has built a strong reputation for engineering diesel engines and complete power-generation systems for commercial, industrial, rental, infrastructure, and mission-critical applications. Its equipment is commonly specified where dependable starting, stable electrical output, durable construction, and long-term serviceability are important.
One of Cummins’ advantages is that the company produces more than engines alone. Cummins generator packages integrate the engine, alternator, controls, and supporting systems into a coordinated power-generation solution. That approach can simplify specification and service for facility managers, electrical contractors, engineers, and procurement teams.
Cummins also maintains a broad service and parts network, which is important when a generator supports a hospital, manufacturing facility, commercial building, construction project, or other operation where extended downtime is costly. While every generator still requires proper installation, maintenance, fuel management, and periodic exercising, the Cummins name provides a well-established foundation for dependable power.
The DFEK package combines that brand reputation with the QSX15-G9 engine platform, a rugged industrial diesel designed for high-output generator applications.
QSX15-G9: a proven 15-liter industrial diesel engine
At the center of this generator is the Cummins QSX15-G9. The engine uses a four-cycle, inline six-cylinder configuration with approximately 15 liters of displacement. It is turbocharged and charge-air cooled, allowing the engine to produce the airflow and combustion performance required for a 500 kW-class generator set.
The engine is rated at 755 horsepower at 1,800 RPM. That substantial horsepower reserve helps the generator respond to load changes and support demanding electrical systems when properly sized and installed.
The QSX15-G9’s inline-six design is also practical from a service perspective. Its configuration is familiar to technicians who work with industrial Cummins equipment, while its heavy-duty construction is intended for reliable operation under standby and prime-power conditions. The engine is a strong fit for facilities that need a commercial standby generator capable of supporting substantial loads, including motors, HVAC systems, pumps, production equipment, and other electrical infrastructure.
This QSX15-G9 generator is rated EPA Tier 2. Buyers should confirm emissions, permitting, and installation requirements with the applicable authority having jurisdiction before purchase, particularly when planning a permanent installation or operation in a regulated area.
DFEK electrical ratings and configuration
The DFEK is rated at:
- 500 kW standby
- 455 kW prime
- Three-phase
- 60 Hz
- 277/480 volts
- 12-lead reconnectable alternator
- 800-amp, 100% rated main-line circuit breaker
- PMG permanent magnet generator
The 277/480-volt configuration is widely used in commercial and industrial facilities. The 12-lead reconnectable design also provides flexibility when a project requires a different voltage configuration, subject to proper engineering, reconnection, and installation procedures.
The 800-amp, 100% rated main-line circuit breaker provides a substantial connection point for the generator output. Final breaker coordination, distribution design, grounding, and protection settings should be reviewed by a qualified electrical professional based on the facility’s one-line diagram and load requirements.
The generator end includes a permanent magnet generator, or PMG, which supports excitation and voltage performance under demanding electrical conditions. This feature can be valuable for facilities with motor loads, electronic equipment, variable-frequency drives, and other systems that may create challenging starting or nonlinear load conditions.
PowerCommand 2.3 controls and practical package features
The generator includes a Cummins PowerCommand 2.3 digital control panel. The controller is designed to provide monitoring, operating information, alarms, and protective shutdown functions in a centralized interface.
For standby installations, digital controls are an important part of the overall system. They help operators and service personnel monitor generator conditions, review operating information, and integrate the generator with related power equipment such as an automatic transfer switch or remote annunciation system.
The package also includes:
- A Sens 10-amp battery charger compatible with 120/208/240V
- A coolant heater compatible with 208/240/480V
- An engine cooling radiator rated for 50°C/122°F ambient operation
- A UL 2200-listed stationary engine-generator assembly
The high-ambient radiator rating is particularly useful for installations where summer temperatures, equipment-room conditions, or enclosure temperatures can place additional demand on the cooling system. As with any generator, site ventilation and installation clearances must be designed correctly so the unit can reject heat effectively.
Sound attenuation, wind rating, and fuel capacity
This Cummins DFEK package is equipped with a Level 2 sound-attenuated enclosure. The enclosure is designed to help reduce operating noise while protecting the generator from outdoor conditions and providing service access to key components.
The enclosure carries a 150 MPH wind rating, an important consideration for many outdoor commercial and industrial installations. The project engineer and installer should still confirm site-specific requirements, anchoring, foundation design, local wind exposure, and applicable building codes.
Fuel storage is provided by an 850-gallon UL142 sub-base fuel tank with secondary containment. The large sub-base tank can help extend operating time between refueling intervals, although actual runtime depends on the generator load, fuel consumption, operating conditions, and required reserve levels.
The fuel tank’s secondary containment provides an added layer of protection in the event of a fuel leak. Fuel-system design and installation should be reviewed against local fire, environmental, and permitting requirements.
New, zero-hour 2026 generator with Cummins warranty
CSDG# 4317 is a new, zero-hour 2026 model. Purchasing a new generator can provide advantages for organizations that want current equipment, no previous operating history, and a manufacturer-backed limited warranty.
This unit includes a Cummins two-year/1,000-hour limited warranty, subject to the applicable warranty terms and conditions. The warranty can provide additional confidence for buyers planning a long-term commercial standby or industrial backup power installation.
Important purchasing detail: batteries and startup are not included with this listing. The buyer should plan for the required starting batteries, installation, commissioning, startup procedures, electrical integration, fuel preparation, and any local inspections or permits. The generator is available for purchase, but it should not be represented as already installed, commissioned, or placed into service.
The package measures approximately 86 inches wide by 222 inches long by 121 inches high and weighs approximately 17,996 pounds. It is offered FOB Waukesha, Wisconsin, so transportation, rigging, unloading, and final placement should be discussed during the purchasing process.
A 500 kW diesel generator for commercial and industrial applications
The DFEK QSX15-G9 is well suited to applications that require substantial three-phase standby capacity, including:
- Commercial buildings and office campuses
- Healthcare and medical facilities
- Manufacturing and processing plants
- Warehouses and distribution centers
- Construction and infrastructure projects
- Hotels and large residential developments
- Water and wastewater facilities
- Agricultural and industrial operations
- Rental and temporary power applications
Whether the generator will serve emergency loads, support a prime-power application, or operate as part of a larger system, the correct sizing process is essential. Facility load calculations should account for continuous loads, motor starting requirements, future expansion, transfer-switch operation, and any requirements for redundancy or paralleling.
Similar Cummins generators in stock and ready to ship
Central States Diesel Generators owns the inventory it advertises and maintains a real-time selection of new and used industrial generators. In addition to this new DFEK QSX15-G9, our inventory includes similar Cummins DFEK packages and other Cummins diesel generators in a variety of ratings and configurations.
Current inventory examples include other Cummins units in the 500 kW class, along with larger and smaller industrial generator sets. We also offer equipment from manufacturers such as Caterpillar, Kohler, Generac, MTU, and Blue Star Power Systems. Availability changes as equipment sells, so customers should contact our team to confirm the exact unit, condition, specifications, and shipping schedule.
Browse our Cummins generators, new diesel generators, or used diesel generators to compare available options.
Request pricing and nationwide shipping information
The new Cummins DFEK QSX15-G9 diesel generator, CSDG# 4317, combines a respected Cummins engine with a practical 500 kW package, flexible voltage configuration, PMG alternator, digital controls, high-ambient cooling, sound attenuation, and substantial onboard fuel storage.
To learn more:
- View the complete CSDG# 4317 product listing
- Request a quote or shipping information
- Call Central States Diesel Generators at 262-955-7655
- Ask about similar Cummins generators and other industrial diesel generators currently in stock
Located in Waukesha, Wisconsin, Central States Diesel Generators can arrange nationwide shipping and provide personalized guidance for businesses evaluating standby, prime, or temporary power requirements. Contact our team today to confirm availability, review your application, and reserve this new 500 kW diesel generator or a comparable unit for your project.
