What control panels do Generac's standby generators use?

RG series units 60 kW and smaller, or 100 kW and larger use evolution controllers located on the external housing of the generator. QT series units use a Nexus controller located behind a housing panel.

  • Mar 2, 2026
  • Knowledge

Title
What control panels do Generac's standby generators use?
URL Name
What-Controllers-Do-Generac-s-Liquid-Cooled-Standby-Generators-Use-and-Where-Are-They-Located

Public Answer

Generator control panels and locations (air-cooled and liquid-cooled)

Use this guide to identify which controller your Generac home standby generator uses and where the control panel is located on the unit. Sections are grouped by air-cooled and liquid-cooled models. Controller type and placement can vary by model family, kW rating, and production year. Always confirm with your unit’s data label and user manual. To find manuals, visit the product lookup page. For help with identification or service, contact your local dealer using the dealer locator.

Chapters

Environment

This article applies to Generac residential home standby generators. Images are representative and may vary by enclosure.

Air-cooled standby generators

Guardian (Evolution 1.0)

Most Guardian series models from approximately 2013–2017 use the Evolution 1.0 controller. The controller panel is mounted under the lid at the front of the enclosure. For an overview, see What is the Evolution controller?

Location: under lid, front panel (exterior access).

Guardian (Evolution 2.0)

Most Guardian series models from approximately 2017–present use the Evolution 2.0 controller. For feature and menu details, see Evolution 2.0 controller menu map and Evolution controller overview.

Location: under lid, front panel (exterior access).

Next Gen air-cooled (Power Zone 200)

Next Generation air-cooled models use the Power Zone 200 controller (replaces Evolution 2.0 on Next Gen Guardian). See What’s new about the Next Generation standby generator? and What is the Power Zone 200 controller?

Location: under lid, front panel (keypad without display).

Nexus and Pre-Nexus

Air-cooled home standby models manufactured circa 2010–2013 typically use the Nexus controller; models before ~2010 are considered Pre-Nexus. See The Nexus and Pre-Nexus Control Panels and Nexus controller menu map.

Location: under lid, front panel.

PowerPact 7.5 kW (PowerPact/CorePower controller)

The 7.5 kW PowerPact uses a simplified controller (no LCD) with basic buttons and indicators. For details, see Operating the Controller on the 7.5 kW PowerPact and What is the PowerPact or Core Power Control Panel?

Location: behind the small front access door.

Liquid-cooled standby generators

XG Series — Power Zone 410 controller

All XG series liquid-cooled generators use the Power Zone 410 controller. The controller is located on the exterior of the unit. For an overview, see What is the Power Zone 410 controller?

XG series with Power Zone 410 controller on exterior

RA Diesel Series — Power Zone 410 controller

RA series diesel models use the Power Zone 410 controller. The controller is located inside the generator behind the access door of the unit. Only the circuit breaker is behind the exterior flip up cover. This is in contrast to the RD series that uses the same flip up cover. For an overview, see What is the Power Zone 410 controller?

 

RD Diesel Series — Evolution controller

RD Diesel series models use the Evolution controller. The controller is located on the exterior of the unit. For an overview, see What is the Evolution controller?

 

RG Series (80 kW and smaller) — Evolution controller

On RG series units rated 80 kW and smaller, the Evolution controller is on the outside of the unit. For an overview, see What is the Evolution controller?

RG ≤80 kW with Evolution controller on exterior

RG Series (100 kW only) — Evolution controller

On RG series units rated 100 kW only, the Evolution controller is located inside the generator behind the access door of the unit. For an overview, see What is the Evolution controller?

RG 100 kW with Evolution controller inside the enclosure

QT Series — Nexus controller

On QT series generators, the Nexus controller is located inside the unit. See The Nexus and Pre-Nexus Control Panels and Nexus controller menu map.

QT series with Nexus controller inside the enclosure

Controller and model identification table

Note: This table is not guaranteed to be complete or up to date. Controllers can vary by production year and specific model. Always reference your unit’s user manual to verify the controller present, or use the product lookup page.
ModelFamily / SeriesController
XG03245ANAXXGPower Zone 410
XG03245CNAXXGPower Zone 410
XG04045ANAXXGPower Zone 410
XG04045CNAXXGPower Zone 410
XG04045ANACXGPower Zone 410
XG04045CNACXGPower Zone 410
XG04845ANAXXGPower Zone 410
XG04845CNAXXGPower Zone 410
XG04845ANACXGPower Zone 410
XG04845CNACXGPower Zone 410
RG02224RGEvolution
RG02515ARGEvolution
RG02724RGEvolution
RG03015ARGEvolution
RG032_RGEvolution
RG038_RGEvolution
RG045_RGEvolution
RG060RGEvolution
RG06045XRGEvolution
RG06045CRGEvolution
RG08045CRGEvolution
RG08045XRGEvolution
RG10090CRGEvolution
RG13090CRGPower Zone 410
RG15090CRGPower Zone 410
RA01522RA (diesel)Power Zone 410
RA02022RA (diesel)Power Zone 410
RA03022RA (diesel)Power Zone 410
RA03022LRA (diesel)Power Zone 410
RA03022SRA (diesel)Power Zone 410
RD01225RD (diesel)Evolution
RD01525RD (diesel)Evolution
RD01525LRD (diesel)Evolution
RD01525SRD (diesel)Evolution
RD01625RD (diesel)Evolution
RD02025RD (diesel)Evolution
RD02025LRD (diesel)Evolution
RD02025SRD (diesel)Evolution
RD02422RD (diesel)Evolution
RD03022RD (diesel)Evolution
RD04833RD (diesel)Evolution
RD04833SRD (diesel)Evolution
RD05033RD (diesel)Evolution
RD05033LRD (diesel)Evolution
RD05033SRD (diesel)Evolution

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