GENERAC RG04845GNAX 48kW Protector Standby Generator - 120/208

No transfer switch is included with the RG04845GNAX. You order the ATS separately and size it to the service, and the generator is rated at 200 A on a 120/208 V three-phase configuration, so the switch and feeders have to match that. Budget for the switch, the fuel line and the pad as separate line items on the job.

It is a three-phase 120/208 V machine, 48 kW. That suits a commercial service with a 208Y/120 panel, light commercial buildings, retail, small multi-family houses of that configuration. If your building is single-phase 120/240, this is the wrong unit and you want the single-phase version of the Protector at the same kW rather than trying to derate this one.

The Protector line is approved for an 18 inch offset, meaning the enclosure can sit 18 inches from the structure. That is what makes it work on tight lot lines and narrow side yards. Plan the pad off the footprint: 83.4 inches long, 35 inches wide, 46 inches tall. Local code and the AHJ can still require more separation from openings and combustibles than the manufacturer's own offset.

Either. The RG04845GNAX is a dual-fuel-capable standby that runs on natural gas or liquid propane, so you commit to the fuel at commissioning rather than at purchase. The engine is a Generac 4.5L liquid cooled unit with an ultra-low pressure fuel delivery system, which is why it tolerates the low supply pressures typical of a residential or light commercial gas service. Size the gas line for the 48 kW load before the install date, undersized pipe is the most common reason one of these will not hold load on startup.

It is UL Listed, ETL Listed and CSA Certified. That covers the listing requirement most AHJs and institutional specs impose on a permanently installed standby set, and the CSA certification means it can be permitted on the Canadian side as well. The unit also carries a Prop 65 cancer and reproductive harm warning, which matters if you are procuring into California.

Yes. The Protector produces utility-grade power with less than 5 percent total harmonic distortion, which is the threshold most sensitive-electronics and VFD loads are specified to. It also carries automatic voltage regulation and overload protection. For an IT room, medical imaging or elevator controller on a 208Y/120 service, that THD figure is the number the electrical engineer is going to ask for.

Two ways. The Evolution controller is mounted so it is visible and operable without opening the enclosure, and it tracks maintenance intervals and logs hours on a built-in hour meter. For remote coverage, Mobile Link is standard on every Protector Series unit, so status comes to a phone, tablet or PC from anywhere. For a property manager running multiple sites, that is the difference between finding out about a fault on the monthly walk and finding out when it happens.

The Protector runs its self test in Quiet-Test mode, at a reduced RPM for a five or twelve minute run rather than a full-speed exercise. You program it weekly, bi-weekly or monthly, so on a multi-family or hospitality site you can schedule it mid-morning and keep it out of quiet hours. It burns less fuel that way too.

It starts automatically. Engine start-up is automatic override, so on a utility failure the set cranks and picks up load without anyone present, then shuts down on restoration. Protection is built in too: low oil shutdown and overload protection are both on the unit. Note the automatic sequence only completes if you have paired it with a transfer switch, which is not supplied with the generator.

Rated and surge output are both 48,000 watts, so there is no headroom above the nameplate to lean on for inrush. Size the set against the actual starting kVA of your largest motor, not just running load. On a 120/208 V three-phase service that unit output corresponds to a 200 A current rating, which is what the transfer switch and feeder sizing follow from.

Generac model RG04845GNAX, the 48 kW Protector Series standby, three-phase 120/208 V, 2019 model year. The RG prefix and the 048 in the number identify the 48 kW liquid-cooled Protector; the voltage configuration is what separates it from the other 48 kW variants in the family, so quote the full designation rather than just 48 kW Protector.

The enclosure is all aluminum with Generac's RhinoCoat powder-coated finish, and the coating protects the internal frame from rust as well as the skin. Aluminum does not rust the way a steel enclosure does, which is the reason this construction gets specified near salt air and on exposed roofs. It ships in a bisque color that reads neutral against most landscaping and screen walls.

Country of origin is the United States, and the engine itself is a Generac 4.5L purpose-built in Wisconsin. That is the answer a public agency or institutional procurement office needs when domestic-preference language is in the solicitation.