Protector liquid-cooled home standby generators
Protector generators are Generac's liquid-cooled standby units, sold for homes and for businesses, and they run on natural gas or propane. The table below lists every current gaseous Protector model with the figures Generac publishes, and the cards link to Generac's own documents.
About the Protector Family
Generac sells two Protector lines with gaseous engines. The RG units run from 22 to 150 kW. The XG units run from 25 to 80 kW, and each XG size comes in a single-phase and a three-phase version. Every model here runs on natural gas or propane and has a liquid-cooled engine in an aluminum enclosure. Generac rates these sets for emergency standby use, so the average load over a full day should stay at or below 70 percent of the rating.
The two output columns come from Generac's spec sheets. Most models give the same output on either fuel. The 27 kW RG unit gives 25 kW on natural gas, and the 80 kW XG units give 75 kW on propane. The sound column is measured 7 m from the unit with the engine at operating speed and no load. On the XG sheets and the 130 and 150 kW sheet, that figure is the lowest of eight measuring points around the unit, so a reading elsewhere can be higher.
Dimensions are length by width by height in millimetres. They come from the installation drawing in each spec sheet, rounded to the nearest millimetre. Weights are for the generator alone, without its shipping skid. Every sheet lists a 5 year or 2,000 hour limited warranty, and offers the cold weather heaters and a 50 A or 100 A Load Manager as optional kits.
Models and Specifications
| Model | Output on propane (kW) | Output on natural gas (kW) | Fuel | Engine (cc) | Load management | Sound level at 7 m, operating speed, no load (dBA) | Warranty (years) | Cold weather kit | Certifications | Dimensions (mm) | Weight (kg) | Voltage and phase | Availability | Documents |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Protector RG 22 kWRG02224 | 22 | 22 | Liquid propane or natural gas | 2,400 | Optional Load Manager, 50 A or 100 A | 70 | 5 | Yes | UL 2200 Listed | 1580 x 776 x 983 mm | 410.5 | 120/240 V 1-Phase, 208/120 V or 240/120 V 3-Phase | Confirm availability with us | |
| Protector RG 25 kWRG02515A | 25 | 25 | Liquid propane or natural gas | 1,500 | Optional Load Manager, 50 A or 100 A | 72 | 5 | Yes | UL 2200 Listed | 1580 x 776 x 980 mm | 352 | 120/240 V 1-Phase, 208/120 V or 240/120 V 3-Phase | Confirm availability with us | |
| XG Protector 25 kW, single-phaseXG02525AUAX | 25 | 25 | Liquid propane or natural gas | 2,500 | Optional Load Manager, 50 A or 100 A | 59 | 5 | Yes | UL 2200 Listed | 1691 x 829 x 1033 mm | 482 | 120/240 V 1-Phase | Confirm availability with us | |
| XG Protector 25 kW, three-phaseXG02525CUAX | 25 | 25 | Liquid propane or natural gas | 2,500 | Optional Load Manager, 50 A or 100 A | 59 | 5 | Yes | UL 2200 Listed | 1691 x 829 x 1033 mm | 482 | 208/240/480 V 3-Phase | Confirm availability with us | |
| Protector RG 27 kWRG02724 | 27 | 25 | Liquid propane or natural gas | 2,400 | Optional Load Manager, 50 A or 100 A | 70 | 5 | Yes | UL 2200 Listed | 1580 x 776 x 983 mm | 426 | 120/240 V 1-Phase, 208/120 V or 240/120 V 3-Phase | Confirm availability with us | |
| Protector RG 30 kWRG03015A | 30 | 30 | Liquid propane or natural gas | 1,500 | Optional Load Manager, 50 A or 100 A | 73 | 5 | Yes | UL 2200 Listed | 1580 x 776 x 980 mm | 366 | 120/240 V 1-Phase, 208/120 V or 240/120 V 3-Phase | Confirm availability with us | |
| XG Protector 30 kW, single-phaseXG03025AUAX | 30 | 30 | Liquid propane or natural gas | 2,500 | Optional Load Manager, 50 A or 100 A | 59 | 5 | Yes | UL 2200 Listed | 1691 x 829 x 1033 mm | 510 | 120/240 V 1-Phase | Confirm availability with us | |
| XG Protector 30 kW, three-phaseXG03025CUAX | 30 | 30 | Liquid propane or natural gas | 2,500 | Optional Load Manager, 50 A or 100 A | 59 | 5 | Yes | UL 2200 Listed | 1691 x 829 x 1033 mm | 510 | 208/240/480 V 3-Phase | Confirm availability with us | |
| XG Protector 32 kW, single-phaseXG03245ANAX | 32 | 32 | Liquid propane or natural gas | 4,500 | Optional Load Manager, 50 A or 100 A | 66 | 5 | Yes | UL 2200 Listed | 2119 x 854 x 1147 mm | 769 | 120/240 V 1-Phase | Confirm availability with us | |
| XG Protector 32 kW, three-phaseXG03245CNAX | 32 | 32 | Liquid propane or natural gas | 4,500 | Optional Load Manager, 50 A or 100 A | 66 | 5 | Yes | UL 2200 Listed | 2119 x 854 x 1147 mm | 769 | 208/240/480 V 3-Phase | Confirm availability with us | |
| XG Protector 40 kW, single-phaseXG04045ANAX | 40 | 40 | Liquid propane or natural gas | 4,500 | Optional Load Manager, 50 A or 100 A | 66 | 5 | Yes | UL 2200 Listed | 2119 x 854 x 1147 mm | 769 | 120/240 V 1-Phase | Confirm availability with us | |
| XG Protector 40 kW, three-phaseXG04045CNAX | 40 | 40 | Liquid propane or natural gas | 4,500 | Optional Load Manager, 50 A or 100 A | 66 | 5 | Yes | UL 2200 Listed | 2119 x 854 x 1147 mm | 769 | 208/240/480 V 3-Phase | Confirm availability with us | |
| XG Protector 48 kW, single-phaseXG04845ANAX | 48 | 48 | Liquid propane or natural gas | 4,500 | ecobee smart thermostat included; optional Load Manager, 50 A or 100 A | 58 | 5 | Yes | UL 2200 Listed | 2119 x 854 x 1147 mm | 769 | 120/240 V 1-Phase | Confirm availability with us | |
| XG Protector 48 kW, three-phaseXG04845CNAX | 48 | 48 | Liquid propane or natural gas | 4,500 | Optional Load Manager, 50 A or 100 A | 58 | 5 | Yes | UL 2200 Listed | 2119 x 854 x 1147 mm | 769 | 208/240/480 V 3-Phase | Confirm availability with us | |
| XG Protector 60 kW, single-phaseXG06045ANAX | 60 | 60 | Liquid propane or natural gas | 4,500 | Optional Load Manager, 50 A or 100 A | 64 | 5 | Yes | UL 2200 Listed | 2661 x 854 x 1300 mm | 889 | 120/240 V 1-Phase | Confirm availability with us | |
| XG Protector 60 kW, three-phaseXG06045CNAX | 60 | 60 | Liquid propane or natural gas | 4,500 | Optional Load Manager, 50 A or 100 A | 64 | 5 | Yes | UL 2200 Listed | 2661 x 854 x 1300 mm | 889 | 208/240/480 V 3-Phase | Confirm availability with us | |
| XG Protector 80 kW, single-phaseXG08045ANAX | 75 | 80 | Liquid propane or natural gas | 4,500 | Optional Load Manager, 50 A or 100 A | 64 | 5 | Yes | UL 2200 Listed | 2661 x 854 x 1300 mm | 953 | 120/240 V 1-Phase | Confirm availability with us | |
| XG Protector 80 kW, three-phaseXG08045CNAX | 75 | 80 | Liquid propane or natural gas | 4,500 | Optional Load Manager, 50 A or 100 A | 64 | 5 | Yes | UL 2200 Listed | 2661 x 854 x 1300 mm | 953 | 208/240/480 V 3-Phase | Confirm availability with us | |
| Protector RG 100 kWRG10090C | 100 | 96 | Propane or natural gas, model-specific | 9,000 | Optional Load Manager, 50 A or 100 A | 71 | 5 | Yes | UL 2200 Listed | 2810 x 1003 x 1761 mm | 1,292 | 120/240 V 1-Phase, 208/120 V, 240/120 V or 480/277 V 3-Phase | Confirm availability with us | |
| Protector RG 130 kWRG13090C | 130 | 130 | Propane or natural gas, model-specific | 9,000 | Optional Load Manager, 50 A or 100 A | 72 | 5 | Yes | UL 2200 Listed | 3371 x 1035 x 1627 mm | 1,365 | 120/240 V 1-Phase, 208/120 V, 240/120 V or 480/277 V 3-Phase | Confirm availability with us | |
| Protector RG 150 kWRG15090C | 140 | 150 | Propane or natural gas, model-specific | 9,000 | Optional Load Manager, 50 A or 100 A | 77 | 5 | Yes | UL 2200 Listed | 3633 x 1284 x 1730 mm | 1,487 | 120/240 V 1-Phase, 208/120 V, 240/120 V or 480/277 V 3-Phase | Confirm availability with us |
Specifications checked against Generac's published documents on 2026-10-01. Figures are the manufacturer's and can change; the linked documents are the source.
Canadian Context
Each Protector spec sheet offers cold weather heaters as field-installed kits. Generac recommends the battery heater where the temperature drops below 0 °C and the engine block heater where it drops below minus 18 °C. Winter nights in Hamilton and Niagara regularly go below freezing, so the battery heater is worth planning for. Both heaters run on 120 V power, which means a supply to the generator pad that the electrician includes in the job.
Many homes in Hamilton and Niagara run a standby generator on the natural gas service, so the natural gas column is the one to size the house against. A licensed gas fitter sizes the gas line and checks the meter for the unit's full load. Generac's sheet lists 10.2 cubic metres an hour at full load on natural gas for the 27 kW RG unit, and the larger units burn more.
The Protector pages and spec sheets we read show UL 2200 and no Canadian certification mark, so every row reads Confirm availability with us. Connecting one of these units to a building's wiring needs a notification of work filed with the Electrical Safety Authority (ESA). ESA reviews the work and issues a Certificate of Acceptance once it passes. The three-phase XG models suit a building with a three-phase service, which is more common on commercial property than on a house.
The Electrical Safety Authority (ESA) notification of work is filed before the work starts. When the installation is done, ESA inspects it and issues a Certificate of Acceptance once it passes. Where the unit burns natural gas or propane, a licensed gas fitter makes the gas connection. Where a meter or a service entrance switch is involved, the local utility does its part of the work.
Protector Documents
RG 22 and 27 kW spec sheet
Spec sheet, English
Hosted by Generac
For: Protector RG 22 kW, Protector RG 27 kW
Open the PDFRG 25 and 30 kW spec sheet
Spec sheet, English
Hosted by Generac
For: Protector RG 25 kW, Protector RG 30 kW
Open the PDFRG 130 and 150 kW spec sheet
Spec sheet, English
Hosted by Generac
For: Protector RG 130 kW, Protector RG 150 kW
Open the PDFXG 25 and 30 kW spec sheet
Spec sheet, English
Hosted by Generac
For: XG Protector 25 kW, single-phase, XG Protector 25 kW, three-phase, XG Protector 30 kW, single-phase, XG Protector 30 kW, three-phase
Open the PDFXG 32 to 80 kW spec sheet
Spec sheet, English
Hosted by Generac
For: XG Protector 32 kW, single-phase, XG Protector 32 kW, three-phase, XG Protector 40 kW, single-phase, XG Protector 40 kW, three-phase, XG Protector 48 kW, three-phase, XG Protector 60 kW, single-phase, XG Protector 60 kW, three-phase, XG Protector 80 kW, single-phase, XG Protector 80 kW, three-phase
Open the PDFXG 48 kW single-phase spec sheet
Spec sheet, English
Hosted by Generac
For: XG Protector 48 kW, single-phase
Open the PDFRG 22 to 30 kW owner's manual
Owner's manual, English
Hosted by Generac
For: Protector RG 22 kW, Protector RG 25 kW, Protector RG 27 kW, Protector RG 30 kW
Open the PDFRG 100 to 150 kW owner's manual
Owner's manual, English
Hosted by Generac
For: Protector RG 100 kW, Protector RG 130 kW, Protector RG 150 kW
Open the PDFRG 100 to 150 kW owner's manual in French
Owner's manual, French
Hosted by Generac
For: Protector RG 100 kW, Protector RG 130 kW, Protector RG 150 kW
Open the PDFXG 25 and 30 kW owner's manual
Owner's manual, English
Hosted by Generac
For: XG Protector 25 kW, single-phase, XG Protector 25 kW, three-phase, XG Protector 30 kW, single-phase, XG Protector 30 kW, three-phase
Open the PDFXG 25 and 30 kW owner's manual in French
Owner's manual, French
Hosted by Generac
For: XG Protector 25 kW, single-phase, XG Protector 25 kW, three-phase, XG Protector 30 kW, single-phase, XG Protector 30 kW, three-phase
Open the PDFXG 32 to 80 kW owner's manual
Owner's manual, English
Hosted by Generac
For: XG Protector 32 kW, single-phase, XG Protector 32 kW, three-phase, XG Protector 40 kW, single-phase, XG Protector 40 kW, three-phase, XG Protector 48 kW, single-phase, XG Protector 48 kW, three-phase, XG Protector 60 kW, single-phase, XG Protector 60 kW, three-phase, XG Protector 80 kW, single-phase, XG Protector 80 kW, three-phase
Open the PDFXG 32 to 80 kW owner's manual in French
Owner's manual, French
Hosted by Generac
For: XG Protector 32 kW, single-phase, XG Protector 32 kW, three-phase, XG Protector 40 kW, single-phase, XG Protector 40 kW, three-phase, XG Protector 48 kW, single-phase, XG Protector 48 kW, three-phase, XG Protector 60 kW, single-phase, XG Protector 60 kW, three-phase, XG Protector 80 kW, single-phase, XG Protector 80 kW, three-phase
Open the PDFRG 22 to 30 kW installation guide
Installation manual, English
Hosted by Generac
For: Protector RG 22 kW, Protector RG 25 kW, Protector RG 27 kW, Protector RG 30 kW
Open the PDFRG 100 to 150 kW installation manual
Installation manual, English
Hosted by Generac
For: Protector RG 100 kW, Protector RG 130 kW, Protector RG 150 kW
Open the PDFRG 100 to 150 kW installation manual in French
Installation manual, French
Hosted by Generac
For: Protector RG 100 kW, Protector RG 130 kW, Protector RG 150 kW
Open the PDFXG 25 to 80 kW installation manual
Installation manual, English
Hosted by Generac
For: XG Protector 25 kW, single-phase, XG Protector 25 kW, three-phase, XG Protector 30 kW, single-phase, XG Protector 30 kW, three-phase, XG Protector 32 kW, single-phase, XG Protector 32 kW, three-phase, XG Protector 40 kW, single-phase, XG Protector 40 kW, three-phase, XG Protector 48 kW, single-phase, XG Protector 48 kW, three-phase, XG Protector 60 kW, single-phase, XG Protector 60 kW, three-phase, XG Protector 80 kW, single-phase, XG Protector 80 kW, three-phase
Open the PDFXG 25 to 80 kW installation manual in French
Installation manual, French
Hosted by Generac
For: XG Protector 25 kW, single-phase, XG Protector 25 kW, three-phase, XG Protector 30 kW, single-phase, XG Protector 30 kW, three-phase, XG Protector 32 kW, single-phase, XG Protector 32 kW, three-phase, XG Protector 40 kW, single-phase, XG Protector 40 kW, three-phase, XG Protector 48 kW, single-phase, XG Protector 48 kW, three-phase, XG Protector 60 kW, single-phase, XG Protector 60 kW, three-phase, XG Protector 80 kW, single-phase, XG Protector 80 kW, three-phase
Open the PDFStandby generator warranty, five years
Warranty, English
Hosted by Generac
For: Protector RG 22 kW, Protector RG 25 kW, XG Protector 25 kW, single-phase, XG Protector 25 kW, three-phase, Protector RG 27 kW, Protector RG 30 kW, XG Protector 30 kW, single-phase, XG Protector 30 kW, three-phase, XG Protector 32 kW, single-phase, XG Protector 32 kW, three-phase, XG Protector 40 kW, single-phase, XG Protector 40 kW, three-phase, XG Protector 48 kW, single-phase, XG Protector 48 kW, three-phase, XG Protector 60 kW, single-phase, XG Protector 60 kW, three-phase, XG Protector 80 kW, single-phase, XG Protector 80 kW, three-phase, Protector RG 100 kW, Protector RG 130 kW, Protector RG 150 kW
Open the PDFFrequently Asked Questions
For most models the output is the same on either fuel. Generac's sheets show a few exceptions. The 27 kW RG unit gives 25 kW on natural gas, and the 100 kW RG unit gives 96 kW on natural gas. The 150 kW RG unit gives 150 kW on natural gas and 140 kW on propane, and the 80 kW XG units give 75 kW on propane.
A house in Ontario normally has a 120/240 V single-phase service. The RG units in the table are rated for 120/240 V single-phase, and each XG size has a single-phase version. The three-phase XG models are meant for buildings with a three-phase service. The electrician checks the service and the house's load before choosing a size.
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