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Generac XG04045ANAC 40kW 120/240V Standby Generator

by Generac
SKU XG04045ANAC-NG
$25,169.00

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Generac XG04045ANAC – 40kW 120/240V Standby Generator

The Generac XG04045ANAC is a 40kW liquid-cooled automatic standby generator designed for backup power applications using 120/240V 1-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. With Quiet-Test Self-Test Mode, TruePower technology, cellular connectivity, and corrosion-resistant construction, this generator supports reliable standby power planning when properly sized and professionally installed.

40kW Backup Power for 120/240V 1-Phase Applications

The XG04045ANAC is built for standby generator projects where 40kW output, 120/240V 1-phase service, and fuel flexibility are key requirements. Final load sizing, voltage requirements, fuel setup, and site conditions should be reviewed by a qualified installer before purchase or installation.

Quiet-Test Self-Test Mode and TruePower Technology

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 clean, smooth power quality.

Controller-Selectable Natural Gas or Vapor Propane Fuel

This Generac XG Series generator supports controller-selectable fuel setup for natural gas or vapor propane. Fuel type selection using the controller helps simplify generator installation planning for qualified installers.

Corrosion-Resistant Enclosure and Frame

The supplied product details list an aluminum enclosure, zinc-plated fasteners, and electro-galvanized frame rails with powder coat for corrosion resistance. These construction details help support long-term outdoor placement in demanding environments.

Generac XG04045ANAC 40kW liquid-cooled standby generator for 120 240V 1-phase backup power

The Generac XG04045ANAC is designed for permanent standby generator applications where 40kW output, 120/240V 1-phase service, and catalyst-equipped configuration are part of the project requirements. Its controller-selectable fuel setup helps support natural gas or vapor propane planning for the site.

With Quiet-Test Self-Test Mode, TruePower technology, cellular connectivity, and corrosion-resistant construction, this generator supports practical standby power planning and long-term service visibility. Its SCAQMD-compliant catalyst configuration should be reviewed alongside local installation requirements before ordering.

Generac XG04045ANAC 40kW 1-phase standby generator with SCAQMD catalyst configuration

Generac XG04045ANAC Features & Benefits

  • 40kW standby output: Provides a clear power rating for properly sized 120/240V 1-phase backup applications.
  • 120/240V 1-phase service: Matches projects that require this specific single-phase voltage configuration.
  • Natural gas or vapor propane fuel: Gives buyers fuel flexibility for permanent standby generator planning.
  • Quiet-Test self-test mode: Runs a lower-RPM five-minute test cycle that can be programmed weekly, biweekly, or monthly.
  • TruePower technology: Delivers less than 5% total harmonic distortion for clean, stable power quality.
  • Cellular connectivity: Supports Mobile Link monitoring for generator owners and Fleet visibility for supporting dealers.
  • Corrosion-resistant construction: Includes an aluminum enclosure, zinc-plated fasteners, and electro-galvanized frame rails with powder coat.
  • Catalyst-equipped configuration: Listed as SCAQMD compliant in the supplied product specifications.

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Generac XG04045ANAC Specifications

Brand Generac
Series Liquid Cooled XG Series
Model / SKU XG04045ANAC
Product Type Liquid-cooled automatic standby generator
Generator Type Protector gaseous generator
Rated Power Output 40kW
Fuel Type Natural gas / vapor propane
Voltage 120/240V
Phase 1-phase
Engine 4.5L engine
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

Generac XG04045ANAC Info

Generac XG04045 User Manual

Generac XG04045 Installation Manual