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Key Specs
Producing reliable power of 40 ekW at 60 Hz, our D40 GC diesel generator sets designed to ISO 8528-5 transient response requirements. All D40 GC generator sets meet EPA Stationary Emergency (Tier 3) emissions standards.
Requires less space for installation; leaves more room for your on-going operations
Ensures you can count on emergency power when it is needed
World's best product support network ensures spare parts are readily available for maintenance and service needs
| Maximum Rating | 40 ekW 40 ekW |
| Minimum Rating | 40 ekW 40 ekW |
| Emissions/Fuel Strategy | U.S. EPA Cert., Tier 3, SCAQMD Compliant U.S. EPA Cert., Tier 3, SCAQMD Compliant |
| Voltage | 208 to 600 Volts 208 to 600 Volts |
| Frequency | 60 Hz 60 Hz |
| Speed | 1800 rpm 1800 rpm |
| Duty Cycle | Standby Standby |
| Engine Model | C4.4, In-line 4, 4-cycle diesel C4.4, In-line 4, 4-cycle diesel |
| Bore | 4.1 in 105 mm |
| Stroke | 5 in 127 mm |
| Displacement | 269 in 4.4 l |
| Compression Ratio | 18.2:1 18.2:1 |
| Aspiration | Turbocharged Turbocharged |
| Fuel System | Common Rail Common Rail |
| Governor Type | Mechanical, ADEM™A4 Mechanical, ADEM™A4 |
| Length - Maximum | 77.2 in 1962 mm |
| Width - Maximum | 43.3 in 1100 mm |
| Height - Maximum | 48 in 1220 mm |
| Dry Weight - Genset (maximum) | 1847 lb 838 kg |
Use the comparison tool to compare detailed specs of Cat and competitor models.
Compare All ModelsBuild and customize your own generator set to perfectly fit your needs.
Learn MoreCalculate what generator size you need by using our commercial and industrial generator sizing calculator, SpecSizer.
Learn MoreCaterpillar product brochures and other informational documents are available for your growing business.
