DE400S GC (60 Hz)

DE400S GC Generator Set

C13 (50 HZ) 350-450 kVA Diesel Generator models represent a customizable and flexible solution for your mission critical, standby and prime applications.



The DE400S GC diesel generator sets have been developed for your standby applications. Producing reliable power of 400 ekW at 60 Hz, our C9.3 diesel-powered DE400S GC generator set is designed to ISO 8528-5 transient response requirementsCaterpillar is leading the power generation marketplace with Power Solutions engineered to deliver unmatched flexibility, expandability, reliability, and cost-effectiveness.Electric Power

Cat Generator Set Package

  • Cat generator set packages have been fully prototype tested
  • Accepts 100% block load in one step and meets NFPA 110 loading requirements
  • Conform to ISO 8528-5 steady state and transient response requirements

Cat Diesel Engine

  • Reliable, rugged, durable design
  • Field-proven in thousands of applications worldwide
  • Four-stroke-cycle diesel engine combines consistent performance and excellent fuel economy with minimum weight

A-Frame Alternator

  • Superior motor starting capability minimizes need for oversizing alternator
  • Designed to match performance and output characteristics of Cat diesel engines
  • Robust Class H insulation

GCCP 1.1 Control Panel

  • User-friendly interface and navigation
  • Scalable system to meet a wide range of installation requirement
  • Expansion modules and site-specific programming for specific customer requirements

Cooling System

  • Designed to operate in standard ambient temperatures up to 55°C (131°F)
  • Contact your Cat Dealer for specific ambient and altitude capabilities


One Safe Source

  • Components used in the generator set are selected based on seamless design integration to provide the optimum performance
  • The generator set is fully assembled at a Caterpillar facility following our quality guidelines
  • Each generator set package is tested before leaving the Caterpillar facility
  • Cat product support, including dealer service, parts and warranty covers the entire Cat power system

World Wide Product Support

  • Cat dealers have over 1,800 dealer branch stores operating in 200 countries
  • Your local Cat dealer provides extensive post-sale support, including maintenance and repair agreements

  • Standard Equipment
  • Optional Equipment
  • Specs
  • Docs

Standard Equipment

Optional Equipment

  • European Certificates
    • Australia, CIS, Gulf Certification
    • EU certificate of conformance
  • Auxiliary Supply Voltage
    • 240V
  • Alternator Requirements
    • Space Heater
    • IP Standard @ 21 FUW A-Frame
  • Fuel Storage
    • High Fuel Level Alarm
    • Dual Wall 8 Hour Tank
    • Single Wall Tank With Containment 01
    • Fuel Level Sender
    • Low Fuel Level Shutdown
    • Low Fuel Level Alarm
  • Enclosure
    • Cat GC Enclosure
  • Genset Control
    • Speed Adjust Potentiometer
    • Battery Charger
    • Standby Pack (Smart Jacket Water Heater, Battery Charger)
    • Voltage Adjust Potentiometer
    • PLG Cellular 4G E
    • Low Coolant Temperature Alarm
    • Battery
    • Oil Temperature Display
    • PLG Cellular 4G U
    • Coolant Heater
    • PLG Ethernet
  • Circuit Breaker
    • Overload via Alarm Switch on Breaker
    • 3 Pole Circuit Breaker 1250A
    • Neutral Earth Link
    • 4 Pole Circuit Breaker 630A
    • 4 Pole Circuit Breaker 1250A
    • 4 Pole Circuit Breaker 800A
    • Circuit Breaker Padlock
    • Auxiliary Contacts
    • 3 Pole Circuit Breaker 800A
    • Shunt Trip
    • 3 Pole Circuit Breaker 630A
  • Air, Cooling & Exhaust
    • 6" Elbow Kit
    • 6" Flange Kit
    • 5" Elbow Kit
    • 5-6" Exhaust Adapter
    • Canopy Silencer
    • 6" Muffler - 25 dBA Attenuation
    • Dual Element Air Filter
    • Single Stage Air Filter
    • No Muffler
    • 5" Muffler - 10dBA Attenuation



Long Name:
DE400S GC Generator Set
DE400S GC (60 Hz)

Generator Set Specifications

Maximum Rating
400 ekW
Minimum Rating
400 ekW
Emissions/Fuel Strategy
Low Fuel, R96/EUIIIa
220 to 480 Volts
60 Hz
1800 rpm
Duty Cycle

Engine Specifications

Engine Model
C9.3B ATAAC, I-6, 4-Stroke Water-Cooled Diesel
4.53 in / 115 mm
5.87 in / 149 mm
567.5 in³ / 9.3 l
Compression Ratio
Air to Air Aftercooled
Fuel System
Direct Injection
Governor Type

Generator Set Dimensions

Length - Maximum
186.7 in / 4743 mm
Width - Maximum
79.3 in / 2014 mm
Height - Maximum
84 in / 2133 mm