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The Generac XG04045CNAC is a 40kW liquid-cooled automatic standby generator designed for backup power applications using configurable 3-phase service. This Protector gaseous generator supports natural gas or vapor propane fuel and allows fuel type selection through the controller. The supplied product data lists this model as catalyst equipped with SCAQMD-compliant configuration. For 120/208V 3-phase applications, the unit comes with the appropriate Voltage Configuration Cartridge based on the supplied product note. For 120/240V 3-phase or 277/480V 3-phase applications, the appropriate Voltage Configuration Cartridge and circuit breaker must be ordered for the system to function.
The XG04045CNAC is built for standby generator projects where 40kW output, 3-phase service, and voltage configuration planning are required. Final load sizing, voltage requirements, fuel setup, and site conditions should be reviewed by a qualified installer before purchase or installation.
For applications using an RTS switch, the supplied product note states that the appropriate Phase Sense Kit is required for the 3-phase voltage. For 120/240V or 277/480V 3-phase applications, the appropriate Voltage Configuration Cartridge and circuit breaker must also be selected for the system to function.
Quiet-Test Self-Test Mode runs at a lower RPM for a five-minute test cycle and can be programmed weekly, biweekly, or monthly. TruePower technology is listed to deliver less than 5% total harmonic distortion for cleaner power quality.
This generator supports controller-selectable natural gas or vapor propane fuel setup to help simplify installation planning. The supplied details also list an aluminum enclosure, zinc-plated fasteners, and electro-galvanized frame rails with powder coat for corrosion resistance.
The Generac XG04045CNAC is designed for permanent standby generator applications where 40kW output and configurable 3-phase service are part of the project requirements. Its controller-selectable fuel setup and catalyst-equipped configuration help support more specific installation planning.
For projects using 120/240V or 277/480V 3-phase service, the correct Voltage Configuration Cartridge and circuit breaker must be selected. If the generator will be used with an RTS switch, the appropriate Phase Sense Kit should also be planned for the selected 3-phase voltage.
Need help confirming the right generator configuration?
Contact TrueStead Supply for generator sizing guidance, voltage configuration support, and quote assistance.
✔ Backup power guidance ✔ Voltage configuration support ✔ Quote assistance
Contact Us for a Quote| Brand | Generac |
| Series | Liquid Cooled XG Series |
| Model / SKU | XG04045CNAC |
| Product Type | Liquid-cooled automatic standby generator |
| Generator Type | Protector gaseous generator |
| Rated Power Output | 40kW |
| Fuel Type | Natural gas / vapor propane |
| Voltage | Configurable 3-phase |
| Phase | 3-phase |
| Engine | 4.5L engine |
| Voltage Configuration | 120/208V included; 120/240V or 277/480V require appropriate VCC and circuit breaker |
| RTS Switch Requirement | Appropriate Phase Sense Kit required for 3-phase voltage when used with an RTS switch |
| Monitoring | Cellular connectivity for Mobile Link and Fleet |
| Power Quality | TruePower technology; less than 5% total harmonic distortion |
| Exercise Mode | Quiet-Test self-test mode |
| Enclosure | Aluminum enclosure with corrosion-resistant frame components |
| Catalyst Configuration | Catalyst equipped; SCAQMD compliant |
