10kW NG/LP Home Generator System 40451 with 100 Amp 16 Circuit Automatic Transfer Siwitch by Briggs and Stratton

10kW NG/LP Home Generator System 40451 with 100 Amp 16 Circuit Automatic Transfer Siwitch by Briggs and Stratton
Click to enlarge

Add to Compare
Product ID : 40451
MSRP: $3,299.00
Sale Price: $2,899.00
You Save: $400.00
Manufacturer: Briggs & Stratton
Weight: Free Shipping
E-mail to a friend



10kW standby generators from Briggs & Stratton supply your home with power during utility outages even if you are on vacation, at work, or sleeping in your bed. If power is interrupted, the standby generator and automatic transfer switch senses the outage. The generator starts and the automatic transfer switch moves your home onto generator power within just a few seconds to keep your home safe, secure, and comfortable with minimal interruption.

Placement & Safety

Briggs & Stratton designed the new 10kW generators with a front-facing exhaust and for full compliance with NFPA 37 (National Fire Protection Association regulations for placement of internal combustion engines) which allows more placement options than other generators in the same power class. An automatic, thermally-activated fuel shutoff valve and all steel cabinet make these standby generators safe for installations as close as 18 inches to the home. They fit well in small yards and where tight lot lines make placement difficult for other generators.


Briggs & Stratton uses a Vanguard 550 cc OHV commercial duty engine in its 10-kilowatt standby generators for long-lasting, reliable performance and durability. Improved easy access to the engine and alternator ease routine maintenance when it's time to add oil or change filters and spark plugs. The time-tested Vanguard engine ensures your generator will start when the power goes out and keep keep running until utility power is restored.

The engine operates on natural gas or liquefied petroleum (LP) gas. Briggs & Stratton standby generators are configured at the factory for natural gas with a fuel selector for propane.

Automatic Transfer Switch

10kW standby generators have a number of automatic transfer switch options.

To power only essential circuits, this includes the 100 amp automatic transfer switch model 71047 with room for 16, single-pole breakers to handle critical needs and some conveniences during a power outage.

The whole house switches supply electrical power to all circuits including freezers, refrigerators, air conditioners, water and sump pumps, lights, and television. When an outage strikes, the transfer switch powers the house with electricity from the standby generator, but prevents dangerous backfeeding of utility lines―essential for protecting utility workers and required by many utilities.


The onboard controller monitors the engine and alternator output, and maintains the correct generator frequency and voltage for clean power comparable to the electric utility and suitable for computers and other electronic devices. The safety sensors include low frequency or voltage, low oil shutdown, engine temperature and speed, transfer switch status, and battery voltage.

Appearance and Noise

With a noise level of about 75db, the 10kW standby generator compares to a five-ton central air conditioner. It has the smallest footprint in its power class at just 35 inches high, 28 inches wide and 24.4 inches deep. The Gavanneal steel cabinet―the same steel used by the automotive industry―offers a chip and rust-resistant finish that performs even in a coastal climate and keeps the generator looking good for years to come.


Backed by a 5 Year Parts, Labor and Travel warranty.  Briggs and Stratton will be delivering the most comprehensive warranty that supports their commitment to quality, durability, reliability.

Optional Accessories

Cold-weather kits tested to -20 Fahrenheit ensure the generator will operate even in cold weather. The kits include a temperature controlled battery warmer and two oil heaters to ensure cold weather starting even in harsh, winter conditions.

A basic wireless monitor eliminates trips outdoors to check on the generator. Mount it inside and know your generator is operating as it should without making a trip outside to check its operation.

Maintenance kits include oil, oil filters, air filters, and spark plugs. You won't have to hunt for parts when your standby generator needs maintenance, and you'll know you have the right supplies to complete the job. Keep spare maintenance kits on-hand to ensure you have the required supplies during a long-term power outage.

Each system includes an hour meter, battery charger and synthetic oil. 

Packaged with Briggs & Stratton 100 Amp Automatic Transfer Switch with 16 Circuit Load Center and Nema 3R Cabinet, 71047.

Product Specifications:
Model Number 40451
Manufacturer Briggs & Stratton
Rated Watts 10kW
A/C Ton Rating 3 Ton
Enclosure Galvanneal Steel
UL Listed Yes
Decibel Rating @ 7m 72 db(A)
Starting System Electric Start/Automatic
Low Oil Alert Yes
Hour Meter Yes
Battery Not Included
Mounting Pad Included
Weight 272 lbs.
Shipping Weight 0.00
Dimensions (Inches) 28L x 24.4W x 35.1H
Engine Brand B&S Vanguard Engine
HP/CC 570 cc
Engine RPM 3600
Cooling System Air Cooled
Alternator Type Brushed
Voltage 120/240V Single Phase
Frequency 60 Hz
Auto Voltage Regulation Yes
Rated Amps 41.7 LP/ 37.5 NG
Fuel Type Natural Gas/LPV Liquid Propane
NG Power Capacity 9kW
LP Power Capacity 10kW
NG Consumption @ Full Load 169 cu.ft/hr
NG Consumption @ 1/2 Load 111 cu.ft/hr
LP Consumption @ Full Load 1.82 gal/hr
LP Consumption @ 1/2 Load 1.18 gal/hr
Transfer Switch 71047
Transfer Switch Amps 100 Amps
ATS Poles 2 Pole
Transfer Switch Circuits 16 Circuits
Transfer Switch Style Nema 3R/Outdoor Rated
Consumer Information
Consumer Warranty 5 Year Limited Warranty
Availability Ships Factory Direct In 3-4 Days

Product Reviews

Login or Register to write the first review.