Champion Home Standby 12.5KW Generator w/ NEMA 3R 100179


SKU 44400624 - The Midwest is no stranger to power outages, but with a standby generator from Champion Power Equipment, you'll always be plugged in. Use propane or natural gas to get up to 12.5 kilowatts of steady power from an OHV V-twin engine for appliances and entertainment devices. The 99-amp auto transfer switch is designed for outdoor use as is the all-weather enclosure and mounting pad. Use a Champion home generator to outfit your lifestyle while standing up to the weather and to fickle power grids.

This item ships directly from Champion Power Equipment.  Delivery might take up to 3 weeks from time of purchase to arrive to your door.

We apologize, but we can no longer sell or ship to CA as a result of PROP 65

Pricing and availability may vary by store. Please visit our FAQ and support pages for details.


  • 12.5kW continuous electrical power
  • 717cc Champion Milwaukee Series™ OHV Commercial V-Twin
  • Automatic 99 amp, 12 circuit outdoor transfer switch
  • Champion Auto Control Module (ACM)
  • All weather composite mounting pad
  • All weather steel enclosure
  • Natural gas (NG) or Propane (LPG) operation
  • Pressurized oiling system with spin on automotive type oil filter
  • 10 year limited warranty
  • Reliable  
  • 24 volt starting system is the most powerful in the industry.  Designed to assure starting at temperatures as low as -22 degrees F
  • 10 Year Limited Manufacturers Warranty


  • Champion ATS100 – 99Amp Automatic Transfer Switch, NEMA 3R, Outdoor Use (Model 100952)



kW (LPG) 12.5
kW (NG) 11
LPG Rated Load (A) 104/52
NG Rated Load (A) 91.6/45.8
Rated Voltage 120/240
Main Line CB (A) 53
Phase 1
Rotor Poles 2
Frequency 60 Hz
Insulation Class H
THD (%) <5%
Power Factor 1
Weight (lbs/kg) 427 lb. (193 kg)
Dimensions 49.1 in. x 28 in. x 28.3 in.
Enclosure Material Painted Steel
Enclosure Base Material Composite
Normal Operation Noise Level, Installed 63.5 dBA at 23 ft. (7 m); In front of generator
Operating Range °F (°C) -22° (-30°) to 104° (40°)


Type: Milwaukee Series OHV Commercial V-Twin
Displacement (cc) 717
Engine Speed (rpm) 3600
Block Material Aluminum with Cast-locked, Cast Iron Cylinder
Carburetor Type 2-barrel
Governor Type Mechanical
Ignition System Solid State Magneto
Starter 24V
Oil Capacity (qt/L) 1.5/1.4
Oil Cooler Yes
EPA Certified Yes


Fuel Pressure Required for NG: 5" - 7" w.c.
NG Fuel Consumption @ 50% load (m3/hr) 3.46
NG Fuel Consumption @ Full load (m3/hr) 5.61
Fuel Pressure Required for LPG: 10" - 12" w.c.
LPG Fuel Consumption @ 50% load (l/hr) 5.49
LPG Fuel Consumption @ Full load (l/hr) 9.78
Fuel Supply Inlet (NPT) 3/4


Engine Mode: ATS Automatically starts on utility failure
Engine Mode: Manual Starts unit and runs until turned off
Engine Mode: Off Stops unit / controller and charger active
Transfer Switch Mode: Auto Automatically transfers power on utility failure
Transfer Switch Mode: Off Does not transfer power on utility failure
Transfer Switch Mode: Test Tests all components without starting generator
Generator State Indicator Standard
Programable Start Delay Standard
Weekly Exercise Automatically starts, runs for 15 min
Engine Starting Crank sequence up to five attempts
Starter Lockout Cannot restart for 5 sec after engine stopped
Low Battery Indicator Standard
Battery Charger Fault Indicator Standard
Engine Warm Up 20 sec
Engine Cool Down 1 min
Low Oil Shutdown Standard
Overspeed Shutdown Standard
High Engine Temp Shutdown Standard
Overcrank Protection Standard
Under Speed Protection Standard
Over Speed Protection Standard
Continuous Battery Charging Standard
Hour Meter Standard
Exterior Failed Start Indicator Standard
Utility Voltage Monitor Standard
Safety Fuse Standard
Failure to Transfer Protection Standard
Incorrect Wiring Protection Standard



Learn More
Fulfillment LocationVendor Ship
Manufacturer Number100179
BrandsChampion Power Equipment
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