GENERAC RD03022ADAE Protector Series 30 kW Diesel Standby Generator - Single Phase 120/240 V, Standard Tank

The RD03022ADAE measures 80.8 x 30.5 x 57 inches and weighs 1,927 lbs, so the pad has to carry nearly a ton of concentrated load and be long enough for an 80-inch footprint plus working clearance on the service side. That weight is the dry unit with the standard base tank; add fuel weight on top of it. For a rooftop or structural-deck install, get the 1,927 lb figure to the structural engineer before you order.

The RD03022ADAE is a single phase 120/240 V unit with a current range of 250/125 A, meaning 250 A at 120 V and 125 A at 240 V. That sets your transfer switch and feeder sizing: a 125 A rated ATS at 240 V is the matching size, and the conductors from the generator to the switch get sized off that same 125 A, not off the kW number.

No. The RD03022ADAE is built for single phase 120/240 V only, which is residential and light commercial service. If your building is fed 208 V or 480 V three phase, this unit will not serve it and you need a three phase Protector model sized to that voltage instead. Confirm the service voltage at the main before ordering, because this is not a field-changeable setting.

Diesel, as on the RD03022ADAE, carries its own fuel in a base tank, so it runs through a gas utility outage and a grid outage both. That is why it gets specified for life safety and critical loads. The cost is that you own the fuel: it needs a tank fill, periodic polishing, and a spill containment plan the AHJ signs off on. Natural gas pulls from the utility main with no tank and no fuel management, which suits a property manager who wants it to sit untouched between exercises, but it is only as reliable as the gas line. If your site has no gas service at all, the decision is already made.

Mobile Link connectivity comes standard on the RD03022ADAE, so status can be checked from a phone, tablet, or PC anywhere. For anyone running a portfolio of buildings, that is what turns a generator from a monthly site visit into an alert. On the unit itself there is a two line multilingual LCD Evolution controller in English, Spanish, French, and Portuguese, with an external viewing window so a tech can read generator status and breaker position without opening the enclosure.

A 2,216 cc diesel engine drives the RD03022ADAE, with low oil shutdown built in so the unit protects itself if the level drops during a long run. That matters on an unattended standby set more than on anything you stand next to: an outage can run it for days with nobody looking at it. The governor is an isochronous electronic type, which holds frequency steady as load steps on and off rather than letting it sag, which is what sensitive electronics and motor loads need.

The RD03022ADAE enclosure and frame are aluminum, which does not rust the way a steel enclosure does, so it holds up in coastal salt air and on wash-down or de-icing exposed sites. It is also sound attenuated, which is what usually decides a setback or noise variance when the unit sits close to a property line or under occupied windows.

Order it as Generac RD03022ADAE. That number carries the whole configuration: Protector Series, 30 kW diesel, single phase 120/240 V, standard base tank. Generac builds the same kW rating in other voltage and tank configurations under different suffixes, so a partial number like RD030 is not enough to land the right unit on a spec-driven job.

No separate charger is needed. A smart battery charger is built into the RD03022ADAE, keeping the starting battery topped up between exercise cycles. A standby set that fails to start almost always fails on the battery, so this is the part of the package worth knowing is already there. You still supply the battery itself and a normal-power circuit to feed the charger.

Yes. The RD03022ADAE is flagged under California Proposition 65 for diesel engine exhaust, listed as both a cancer and a birth defect agent. For a California institutional or public agency job this is the disclosure that has to travel with the submittal package. Practically, it reinforces what the exhaust routing already demands: keep the discharge away from intakes, windows, and occupied areas.