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Briggs & Stratton BS12 12,000-Watt (LP) / 10,000-Watt (NG) Standby Generator with Automatic Transfer Switch

Item # 612214 Model # 040531

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Briggs & Stratton BS12 12,000-Watt (LP) / 10,000-Watt (NG) Standby Generator with Automatic Transfer Switch


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Product Information

  • This Briggs & Stratton® standby generator protects your home and family with affordable, reliable Briggs & Stratton backup power
  • Dependable engine power from commercial-grade Briggs & Stratton engines
  • Comprehensive 5-year parts AND labor limited warranty
  • Smallest generator in the industry for its power node
  • 50% Smaller and 60% quieter than our previous model
  • 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
  • This 12kW with Symphony II Power Management can manage a home, up to 5,500 square feet with a 4-ton air conditioner saving you thousands less than a previously required 20kW
  • Compliancy with the NFPA 37 standard means it can be placed as close as 18 inches from your home for flexible placement 3 options — perfect for tight lot lines
  • Rated for operation in areas with low natural gas pressure and can operate at 3-1/2 to 7 inch water column
Fuel Type Liquid propane or natural gas
Liquid Propane Rated Wattage 12000
Natural Gas Rated Wattage 10000
Engine Displacement (Cu. Centimeters) 627
Engine Series Briggs & Stratton Vanguard
Number of Circuits Whole house
Automatic Transfer Switch Included Yes
Transfer Switch Amps 200
Transfer Switch Rating 200 amp
Engine Brand Briggs & Stratton
Full Load Fuel Consumption (GPH) 2.3
Weight (lbs.) 318
Response Time (Seconds) 20
Exercise Cycle Yes
Length (Inches) 28
Width (Inches) 26
Low Oil Shut Down Yes
Hour Meter Yes
Overload Protection Yes
Automatic Voltage Regulation Yes
Circuits Protected Whole house
Total Harmonic Distortion <5%
Warranty 5-year limited
Color/Finish Family Gray
Material Galvaneal Steel
UL Safety Listing Yes
CSA Safety Listing Yes
ETL Safety Listing Yes
Normal Operating Load dB Noise Level 71
Series Name BS12
Height (Inches) 37.2
Wattage Range (Diesel) 8100 to 15000
Wattage Range (Liquid Propane) 8100 to 15000
Wattage Range (Natural Gas) 8100 to 15000
Fuel Consumption 1/2 Load (LP) 1.7
Fuel Consumption 1/2 Load (NG) 117
Fuel Consumption 1/2 Load (D) 1.7
Diesel Rated Wattage 12000
Amperage at 240 Volts (Liquid Propane) 50
Amperage at 240 Volts (Natural Gas) 41.6
Amperage at 240 Volts (Diesel) 50
Running Watt Range 9100 to 13000

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