2018 Briggs & Stratton 48 kW1 Fortress Standby Generator System (76850)

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Briggs & Stratton
48 kW1 Fortress Standby Generator System (76850)



The perfect fit for an extra large or luxury homes as well as small businesses power needs. The 48 kW1 is a commercial-grade generator that will offer reliable protection to you home.

  • Symphony II®: Thanks to Symphony® II Power Management System, a smaller home generator system by Briggs & Stratton can meet all your needs and save you money in the process.
  • 6 Year Parts, Labor & Travel Limited Warranty: The longest warranty in the industry. Our most comprehensive 6 year parts, labor & travel limited warranty.
  • GM Vortec Engine Power: The commercial-grade GM Vortec 1800 RPM engine packs a punch when called upon, yet it's more fuel-efficient and runs quieter than higher RPM engines.
  • Corrosion-Resistant: Durable, all-metal enclosures are built to last protecting against extreme weather conditions and supported by the longest enclosure warranty in the industry.
  • Trust the Power Experts: When your family chooses Briggs & Stratton, it's choosing the engine experts of more than 105 years.
  • Superior Customer Support: Shopping for the right standby generator for your home can be confusing, but Briggs & Stratton will be with you every step of the way. Call our U.S.-based Answer Care Representatives by calling (800) 743-4115 or visit the Customer Support Portal to get your questions answered now.
  • Financing Solution: We have partnered with Synchrony to provide financing solutions that fit your needs. Special financing* is available on qualified Briggs & Stratton Standby Generators on the Briggs & Stratton Standby Power Credit Card.*Subject to credit approval Minimum monthly payments required.
  • Model Number: 76850
  • Running Watts (NG)*: 45,000
  • Engine Series: 5.0L 4-Cylinder, Operating at 1800 RPM
  • Operation: Fully Automatic
  • Running Amps (LP): 200
  • Alternator Type: Computer Friendly
  • NG Fuel Consumption**: 50% load = 464400 BTU/Hr
  • Battery/Battery Charger: Yes
  • Diagnostic Alerts with Remote System Status: Low Oil Shutdown, Engine Does Not Start, Low Frequency, Engine Overspeed, Low Voltage, Low Battery Voltage, Oil Temp High, Transfer Switch Fault
  • Width (in): 39.5
  • Weight (lbs): 1956
  • Running Watts (LP)*: 48,000
  • Engine Brand: GM Vortec
  • Engine Displacement (cc): 5012
  • Voltage (V): 120/240V AC, Single Phase, 1.0 pf
  • Running Amps (NG): 200
  • LP Fuel Consumption**: 50% load = 5.5 gal/hr
  • Weekly Exerciser: Yes
  • Overcrank Protection: Yes
  • Length (in): 98.5
  • Height (in): 44.5
  • Warranty (Product)***: 6 Year Parts, Labor & Travel Limited Warranty
This generator is rated in accordance with UL (Underwriters Laboratories) 2200 (stationary engine generator assemblies) and CSA (Canadian Standards Association) standard C22.2 No. 100-04 (motors and generators).Warranty details available at briggsandstratton.com.



Engine Type
5.0L 4-Cylinder, Operating at 1800 RPMSeries
5012 cc


98.5 in.
39.5 in.
44.5 in.
1956 lb.


AC Output
48,000 LPW

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