Diesel Generator Sets DE400 GC

Request A Price Find Dealer

Key Specs

Maximum Rating
400 kVA
400 kVA
Minimum Rating
400 kVA
400 kVA
Emissions/Fuel Strategy
Non-Certified Emissions
Non-Certified Emissions


400 kVA Diesel Generator Set

The DE400 GC diesel generator sets have been developed for your standby applications. Producing reliable power of 400 kVA at 50 Hz, our C9.3 diesel-powered DE400 GC generator set is designed to ISO 8528-5 transient response requirements


Spare Parts 98% Fulfillment within 24 hours

World's best product support network ensures spare parts are readily available for maintenance and service needs

Up to 250 Events Logged

GCCP auto mains control panel provides access to historical alarms and operating indicators

Saves up to 21% Installed Space

Requires less space for installation; more space available for on-going operations

Product Specifications for DE400 GC

Maximum Rating 400 kVA 400 kVA
Minimum Rating 400 kVA 400 kVA
Emissions/Fuel Strategy Non-Certified Emissions Non-Certified Emissions
Voltage 380 to 415 Volts 380 to 415 Volts
Frequency 50 Hz 50 Hz
Speed 1500 rpm 1500 rpm
Duty Cycle Standby Standby
Engine Model C9.3B, I-6, 4-cycle diesel C9.3B, I-6, 4-cycle diesel
Bore 4.53 in 115 mm
Stroke 5.87 in 149 mm
Displacement 567.5 in³ 9.3 l
Compression Ratio 16.5:1 16.5:1
Aspiration Turbocharged Air-to-Air Aftercooled Turbocharged Air-to-Air Aftercooled
Fuel System Common Rail Common Rail
Governor Type ADEM™A6 ADEM™A6
Length - Maximum 104.8 in 2662 mm
Width - Maximum 44 in 1120 mm
Height - Maximum 69.5 in 1766 mm
Dry Weight - Genset (maximum) 5070.6 lb 2300 kg

DE400 GC Standard Equipment


  • C9.3B, Inline 6 Cylinder, 4 Stroke Diesel

Air, Cooling & Exhaust

  • Standard Air Filter

Genset Control

  • GCCP 1.1


  • Adem A4


  • A Frame Standard Alternator

Fuel Storage

  • Single Wall 8 Hour Tank


  • Engine and alternator pre-paint, Caterpillar yellow

DE400 GC Optional Equipment

Air, Cooling & Exhaust

  • 6" Elbow Kit
  • Dual Element Air Filter
  • 5-6" Exhaust Adapter
  • Canopy Silencer
  • 5" Elbow Kit
  • 6" Flange Kit
  • 6" Muffler - 25 dBA Attenuation
  • 5" Muffler - 10dBA Attenuation
  • Single Stage Air Filter
  • No Muffler

Alternator Requirements

  • IP Standard @ 21 FUW A-Frame
  • Space Heater

Auxiliary Supply Voltage

  • 240V


  • Australia, CIS, Gulf Certification
  • Certificate of Conformance 13

Circuit Breaker

  • 3 Pole Circuit Breaker 800A
  • Circuit Breaker Padlock
  • 4 Pole Circuit Breaker 630A
  • 4 Pole Circuit Breaker 1250A
  • 3 Pole Circuit Breaker 630A
  • 4 Pole Circuit Breaker 800A
  • Overload via Alarm Switch on Breaker
  • Neutral Earth Link
  • 3 Pole Circuit Breaker 1250A
  • Auxiliary Contacts
  • Shunt Trip


  • Cat GC Enclosure

Fuel Storage

  • Low Fuel Level Shutdown
  • Fuel Level Sender
  • Low Fuel Level Alarm
  • Single Wall Tank With Containment 01
  • High Fuel Level Alarm
  • Dual Wall 8 Hour Tank

Genset Control

  • PLG Cellular 4G E
  • Oil Temperature Display
  • Coolant Heater
  • Battery Charger
  • Standby Pack (Smart Jacket Water Heater, Battery Charger)
  • PLG Cellular 4G U
  • Voltage Adjust Potentiometer
  • Low Coolant Temperature Alarm
  • Speed Adjust Potentiometer
  • PLG Ethernet
  • Battery

See how DE400 GC compares against frequently compared products.

Tools And Expert Help At Every Turn


Calculate what generator size you need by using our commercial and industrial generator sizing calculator, SpecSizer.

Learn More


Find the right 3-phase generator set for your power and project needs.

Learn More


We have generator sets ready to reserve and despatch today.

Learn More

Technical Resources

Explore valuable resources for generator sizing, specification, and training materials.

Learn More

Information Library

We have an information library of product literature, white papers, customer stories, and more. Find what you’re looking for.

Learn More

Hire Similar Size

View our full lineup of construction equipment rental products featuring a wide range of portable generator rental options as well as mobile generator sets for hire.

Learn More

Customer Value Agreements

Every piece of Cat equipment is designed and built to provide maximum productivity and operating economy throughout its working life. Your Cat dealer can help you maintain that built-in value through a Customer Value Agreement (CVA).

Learn More

Cat Connect: Get More from Every Asset

Now there's an easier way to track and manage your equipment anytime, anywhere.

Learn More

Product Brochures and More Are Ready to Download!

Full specifications, product brochures and more. Sign up below for additional information. Or for instant access, you can skip this form.

Marketing Consent

Take the interactive virtual product tour to explore the great features and benefits of the DE400 GC

Start DE400 GC Tour

Check out current offers for the DE400 GC

View More Offers