GENERAC RG04845JNAX 48kW Protector Standby Generator - 120/240

The Protector 48kW sets 18 inches from a structure, which is what makes it workable on tight lot lines and narrow side yards where a larger clearance would push the pad off the property. Plan the pad for the unit footprint: 83.4 inches long by 35 inches wide by 46 inches high. The set weighs 1,781 lbs, so the pad and the rigging have to be sized for that before delivery day.

No. The transfer switch is a separate order on the RG04845JNAX, so budget and spec one alongside the generator. The set is rated 48,000 watts at 120/240 V with a 200 A current rating, and the switch you pair with it has to match that service. The generator itself has automatic start, so once a switch is wired in the system runs unattended.

120/240 V, listed as 3-phase. Rated output is 48,000 watts with a 200 A current rating, and surge is the same 48,000 watts, so there is no headroom above nameplate for motor starting. Size the load accordingly: anything with large across-the-line motor starts needs the inrush calculated against 48 kW, not against a higher surge figure.

Either one. The RG04845JNAX is configured for liquid propane or natural gas, so it fits a building already on a gas main as well as a site running off an LP tank. The engine is a Generac 4.5L liquid-cooled unit built in the United States. Whichever fuel you land on, the gas piping has to be sized for a 48 kW liquid-cooled engine, which is a larger draw than an air-cooled residential set.

The 48kW Protector carries three: UL Listed, ETL Listed, and CSA Certified. The CSA certification is the one that matters if the job is in Canada or the spec calls for CSA. Those are the listings stated for this model, and they are what an inspector or a facility spec reviewer will be looking for on the submittal.

The enclosure on the Protector 48kW is all-aluminum with a RhinoCoat powder-coated finish, coated inside and out so the internal frame is protected as well as the skin. Aluminum does not rust the way a steel enclosure does, which is the reason this construction gets specified for coastal and wet installs. Finish color is bisque, which is the neutral tone Generac uses so the set does not stand out in landscaping.

Both. Mobile Link connectivity is standard on the Protector Series, so status is visible from a phone, tablet, or PC, which is what makes a 48kW set practical across a portfolio of buildings nobody visits weekly. The exercise cycle runs in Quiet-Test self-test mode at a lower RPM for a five or twelve minute run, programmable weekly, bi-weekly, or monthly. An hour meter is built in for tracking service intervals, and the Evolution controller is readable without opening the enclosure.

True Power Technology holds total harmonic distortion under 5 percent, which is the threshold sensitive electronics are generally specified against. Automatic voltage regulation is included as well, so output stays stable as load steps on and off. For an IT room, imaging equipment, or lab instrumentation on standby power, that under-5-percent THD figure is the number to put on the submittal.

Low oil shutdown and overload protection are both built into the 48kW Protector. The engine shuts itself down on low oil rather than running itself to failure during an extended outage, and overload protection guards the alternator when the connected load exceeds the 48,000 watt rating. Proprietary engine controls manage performance across temperature ranges and elevations. For an unmanned site, those are the features that decide whether an outage ends in a restart or a rebuild.

RG04845JNAX is both the model and the manufacturer part number, a 2019 model year Protector Series set. That is the number to put on a purchase order or match against a spec, since Generac's RG04845 family varies by voltage and configuration and the suffix is what separates them. Rated wattage is 48,000 at 120/240 V.

Yes, a California Proposition 65 warning for cancer and reproductive harm applies to the 48kW Protector, which is standard for internal combustion equipment. The unit itself is not classified as containing hazardous material for shipping purposes. If the job is a California public or institutional project, the Prop 65 notice needs to carry through to the submittal package.