GENERAC RD03022ADAL Protector Series 30 kW Diesel Standby Generator - Single Phase 120/240 V, Extended Tank

Yes. The RD03022ADAL is a single phase 120/240 V unit rated at 30 kW, with a current range of 250/125 A. That covers the usual light commercial or large residential service where the panel is single phase. If your building is fed three phase, this is the wrong configuration and you need a three phase Protector model instead.

Plan the pad around 80.8 inches long by 30.5 inches wide, with the unit standing 57 inches tall. It weighs 1,927 lbs, so the pad has to be engineered for that point load and you will need equipment to set it, not a crew and a pallet jack. The long footprint is driven by the extended base fuel tank sitting under the enclosure.

The generator set is UL/CUL 2200 listed and the base tank is listed to UL/CUL 142. That is the pairing most AHJs look for on a diesel standby install with an integral belly tank, and it saves specifying a separate listed day tank. The unit is also CSA Certified and ETL Listed.

No transfer switch is included with the generator itself. The RD03022ADAL is the genset and enclosure with its base tank. You will need to order an automatic transfer switch sized to your service, rated for 120/240 V single phase, plus the control wiring between the switch and the Evolution controller. Size the ATS to the service, not to the 30 kW rating.

Diesel makes sense when you have no reliable gas main, when the AHJ wants on-site fuel for an emergency system, or when you need the generator to keep running through a utility gas interruption. The RD03022ADAL carries its own fuel in an extended base tank, so runtime does not depend on an outside supply. The tradeoff is fuel storage, periodic fuel polishing, and diesel exhaust handling. If you have a gas service at the building and no on-site fuel requirement, a gaseous Protector unit removes the tank and the fuel maintenance entirely.

Mobile Link connectivity is standard on the Protector Series, so status can be checked from a phone, tablet, or PC anywhere. For a property manager or MRO group running several sites, that means exercise results and fault conditions come to you instead of requiring a truck roll. Locally, the Evolution controller has a two line LCD readable through an external viewing window in the enclosure, so you can see generator status and breaker position without opening the doors.

The unit uses an isochronous electronic governor, which holds engine speed, and therefore output frequency, flat from no load to full load rather than letting it droop. That matters for elevator drives, IT loads, and medical equipment that will trip on frequency wander.

Low oil shutdown is built in, so the engine stops itself rather than seizing if oil level or pressure drops during a long run. A smart battery charger is also included, which keeps the starting battery conditioned between exercise cycles. That last part matters more than most buyers expect, since a dead start battery is the single most common reason a standby set fails to pick up the load.

The enclosure is sound attenuated aluminum. Aluminum is also the frame material, which is the practical choice for coastal or de-icing-salt environments where a steel enclosure rusts through at the base. Confirm the specific dB figure against your local noise ordinance before you fix the setback, but this is the sound attenuated version rather than a bare open set.

Yes. Diesel engine exhaust is identified as a chemical known to cause cancer and birth defects, so a Prop 65 warning applies. For California installs, factor that into your exhaust routing and setback from intakes and operable windows.

The Evolution controller display runs in English, Spanish, French, and Portuguese, selectable on the two line LCD. Useful where the maintenance staff and the commissioning tech do not share a first language.