Standby Generator, 48kW | 208/240/480 V 3-Phase | CA-MA Emissions

Thousands of homeowners and business owners trust their Protector Series automatic backup generator to power their entire home or business during a power outage. A Protector Series generator senses a power outage, turns on automatically, and delivers power for your entire home, including all large appliances and sensitive electronics. Sound levels are quieter with no change in level or tone. This allows you to continue living life comfortability and keep business operating without interruption.

Generac 48kW 3-Phase Generator

The Generac 48kW 3-Phase Generator offers dependable standby power for residential, commercial, and industrial applications, with full compliance for California and Massachusetts emissions standards. Engineered with a corrosion-resistant aluminum enclosure and stainless steel exhaust, this generator is built for durability in the toughest environments. It features quiet operation, a small footprint, and surge capacity to handle large startup loads for critical equipment.

Key Benefits of Generac 48kW 3-Phase Generator

  • CA-MA Emissions Compliant – Meets strict environmental standards for regulated states.
  • Configurable 3-Phase Output – Supports multiple voltage configurations (208/120, 240/120, or 480/277 V).
  • Quiet-Test™ Mode – Low-speed self-test for reduced noise and fuel consumption.
  • TruePower™ Technology – Clean power delivery with less than 5% total harmonic distortion.
  • Cellular Connectivity – Remote monitoring via Mobile Link and Generac Service Fleet.
  • Corrosion Resistance – Aluminum housing and stainless steel exhaust for lasting performance.
  • Fuel Flexibility – Operates on liquid propane or natural gas.

Common Applications

  • Commercial properties with large electrical loads
  • Industrial facilities needing reliable standby power
  • Residential estates with high energy demands

Packaging

Includes generator unit, aluminum enclosure, integrated Evolution controller, and installation instructions. Battery not included.

Product Properties

Property Value
Fuel Type Liquid Propane or Natural Gas
Running Watts 48000
Engine Size 4.5 L
Battery Size Group 27
Battery Type Flooded Lead Acid
Controller Type Evolution
Enclosure Aluminum
Weight 1781 lb
Dimensions (L x W x H) 83.4 in x 34 in x 45.2 in
Quiet-Test Yes

For a single-phase version, see the Generac 48kW Ecobee Generator. Learn more at Generac.com.

Technical Documents