Are you looking for a 400 kW generator? Deciding which generator best suits your needs can be hard with too many options. That’s why we’ve compiled a list of the top 400 kW generators for sale in 2023.

However, before discussing the types of 400 kW generators, let us first understand what a 400 kW generator is. Kilowatt (kW) generators are used for residential, commercial, and industrial settings during power outages or to provide power in remote locations.

They come in different sizes and models and can be run on various fuels like diesel, gasoline, propane, biodiesel, natural gas, etc. Some common features include an electrical start, automatic transfer switches, noise reduction systems, and voltage regulation.

Read on to find the perfect generator for your business needs!

Caterpillar 400 Kw 3408 Diesel Generator

The Caterpillar 400 kW diesel generator is high-capacity and highly reliable for industrial settings. It’s available in three major voltage options, 120/208V, 277/480V, and 347/600V. The caterpillar diesel generator also comes with sound attenuation, which makes it an appropriate choice for noise-sensitive locations.

Used Caterpillar 3412 Diesel Generator


  • C15 4-stroke engine
  • 95% fuel efficiency
  • 800 gallons fuel tank capacity
  • Integrated digital controls
  • Corrosion resistant coating

Pros and Cons


  • High power output
  • Weatherproofing
  • Reliable customer service and support


  • Requires steady fuel supply
  • Large and heavy
  • Constant maintenance requirements

Cummins 400 Kw Diesel Generator QSX15-G9 NR2

According to, Cummins 400 kW diesel generator has high working reliability and durability. It’s available in 400 kW power options and a wide range of 336 to 1343 kW.

Due to its low fuel consumption and high fuel efficiency, it is extremely common in industrial and commercial settings like hospitals, petrochemical industries, call centers, etc.

Used Cummin 400kw Diesel Generator


  • 5800 kg total weight
  • Digital control panel
  • 720 A rated current
  • 4500 x 2100 x 2400 size
  • 6 cylinders engine
  • IP22 grading protection

Pros and Cons


  • EPA tier 4 emission compliant meeting environmental regulations
  • Advanced digital control panel
  • Efficient performance and troubleshooting


  • High cost and maintenance
  • High noise levels

John Deere 400 Kw Mobile Generator GPR-J400-60T4F

This is a heavy-duty diesel engine with highly reliable control functions and alarms. The enclosure is weatherproof and available in both trailer and non-trailer versions. The 400 kW diesel generator is available in two power voltage options, 480/277V, and 208/120V.


Pros and Cons


  • Excellent shore power connector
  • Emergency access stop buttons
  • International warranty


  • Delayed customer support and service
  • High installation costs

Cummins DFCE NTA855-G5 Diesel Generator

Cummins DFCE NTA855-G5 Diesel Generator is a high-quality generator designed for both emergency and primary power supply. It’s available in 400 kW and in a power range of 275 to 550 kW.

Used Cummins DFCE NTA855-G5 Diesel Generator


  • 6-cylinder turbocharged engine
  • 14 liters displacement
  • Stamford alternator
  • EPA Tier 3 and EU Stage IIIA emissions standards

Pros and Cons


  • Heavy-duty radiator cooling system
  • Weatherproof and sound-attenuated enclosures
  • Reliable and durable


  • Slow customer service support
  • High initial installation costs

Hybrid generator

Perkins 3 Phase 400 Kw Diesel Generator

Perkins 3 phase 400 kW generator suits residential and commercial settings. The three-phase 400 kW generator is available in four power voltages, 208V, 240V, 480V, and 600V. The diesel generator is highly reliable and durable.


  • 6-cylinder turbocharged engine
  • IP23 rating
  • H insulation class
  • Automatic start/stop
  • Remote communication

Pros and Cons


  • Easy maintenance
  • Reliable and durable
  • Weatherproof closure
  • Remote monitoring capabilities


  • High exhaust emissions during operation
  • Consistent maintenance requirements


The options mentioned above are reliable and durable for residential and commercial requirements. You can also visit us at Central States Diesel Generators to access the best deals on new and used generators.

FAQs about 400 kW Generators

What are the maintenance steps for 400 kW generators?

Some maintenance steps which must be taken for 400 kW generators are:

  • Regular air filter replacements
  • Coolant level checking
  • Consistent radiator cleaning
  • Regular oiling and oil change
  • Routine inspection of belts and hoses

What are some steps to keep in mind while choosing a 400 kW generator?

Here are some things to keep in mind while choosing a 400 kW generator:

  • Fuel type
  • Fuel efficiency
  • Power voltage
  • Reliability
  • Costing
  • Maintenance requirements

Can 400 kW generators be used as the primary source of power?

Yes, 400 kW generators can be used as primary sources of power.

400 kW generators are available in how many fuel options.

400 kW generators are available in multiple fuel options like diesel, natural gas, propane, biogas, petrol, etc.

What are the emissions regulations for 400 kW generators?

The emission regulations for each 400 kW generator vary depending upon a variety of factors like fuel type, location, etc.