D1250 GC

D1250 GC

D1250 GC (60 Hz) 1250 ekW Diesel Generator

DE1250 GC


Producing reliable power at 1250 ekW, 60 Hz, our D1250 GC diesel generator set is made to meet your needs in standby applications. We've designed each to ISO 8528-5 transient response requirements and to accept 100% rated load in one step. The generator set is US EPA Stationary Emergency Use Only (Tier 2) certified.1250 ekW Generator Set for Standby applicationsElectric Power

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

DE1100 GC
DE1100 GC

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

SR500 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

DE1100 GC
DE1100 GC

GCCP1.3 Control Panel

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

Cooling System

  • Designed to operate in standard ambient temperatures up to 50°C (122°F)
  • Contact your Cat Dealer for specific ambient and altitude capabilities

DE1100 GC
DE1100 GC


  • Low Fuel Consumption

One Safe Source

  • Components used in the generator set are selected at the design stage to provide optimum package 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

DE1100 GC
  • Standard Equipment
  • Optional Equipment
  • Specs
  • Docs

Standard Equipment

Optional Equipment

  • Control Panels
    • Remote monitoring software
  • Starting/Charging
    • Jacket water heater
  • General
    • Single element or dual element air cleaner
    • Circuit breaker panel, based on regional and product configuration



Long Name:
D1250 GC
D1250 GC

Generator Set Specifications

Maximum Rating
1250 ekW
Minimum Rating
1250 ekW
Emissions/Fuel Strategy
U.S. EPA Tier 2
380 - 480 Volts
60 Hz
1800 rpm
Duty Cycle

Engine Specifications

Engine Model
C32 TA, V-12, 4-Stroke Water-Cooled Diesel
5.71 in / 145 mm
6.38 in / 162 mm
1958.86 in³ / 32.1 l
Compression Ratio
Fuel System
Governor Type

Generator Set Dimensions

Length - Minimum
164.3 in / 4175 mm
Length - Maximum
164.3 in / 4175 mm
Width - Minimum
82.3 in / 2090.5 mm
Width - Maximum
82.3 in / 2090.5 mm
Height - Minimum
89.3 in / 2268 mm
Height - Maximum
89.3 in / 2268 mm
Dry Weight - Genset (minimum)
15776 lb / 7156 kg
Dry Weight - Genset (maximum)
15776 lb / 7156 kg