Skip to Main Content
Skip to Search Filters
Skip to Footer
Results loading, please wait
|
Help
My Account
Loading...
Cancel
Deliver to
Change Location
Shopping in
?
Add Installation to Your Order!
Shopping in
?
Add Installation to Your Order!
×
Change Location
Update your ZIP Code below to see if you're in our network.
Current location:
Enter ZIP Code
Update
Home
/
Automatic Transfer Switches
/
Transfer Switches
/
400 Amp Automatic Transfer Switches
400 Amp Automatic Transfer Switches
Quick Search
Select Style
Portable
» Recreational
» Emergency
» Semi-Pro
» Professional
Standby
» Home Standby
» Whole House
» Commercial Standby
Light Tower
PTO
RV
Towable
Select Fuel
Diesel
Dual Fuel
Gasoline
Natural Gas
LP
Solar
Tri-Fuel
Tractor-Driven
Select Watts
Watts
900 - 1999 W
2000 - 3999 W
4000 - 5999 W
6000 - 9999 W
Kilowatts
10 - 15 kW
16 - 19 kW
20 - 29 kW
30 - 39 kW
40 - 59 kW
60 - 69 kW
70 - 99 kW
100+ kW
Select Brand
A-iPower
Briggs & Stratton
Caterpillar
Champion
Cummins Onan
Cummins Power Generation
Dewalt
ECHO
Firman Generators
Generac
Generac Commercial
Generac Guardian
Generac Protector
Generac PWRcell
Generac QuietSource
Gillette
Goal Zero
Honda
Honeywell
IMD
Kohler
Kubota
Milwaukee
Multiquip
Powermate
Westinghouse
Winco
Yamaha
Filter By
Best Selling
▼
Best Selling
Price: Low to High
Price: High to Low
Name: A-Z
Name: Z-A
Recommends Only
Closeouts Only
In-stock Only
Next Day Air Only
Availability
Go
Filters
Brand
Generac (5)
Kohler (7)
Cummins Power Generation (10)
Briggs & Stratton (5)
Honeywell (5)
Voltage
120/208 Three-Phase (6)
120/240 Single-Phase (14)
120/240 Three-Phase (6)
277/480 Three-Phase (6)
Enclosure
NEMA 1R (4)
NEMA 3R (27)
Transfer Switch Style
Service Disconnect (6)
Standard Installation (24)
ATS Load Prioritizing
Built-In (4)
Compatible (1)
Not Compatible (16)
Not Included (1)
Not Required (2)
ATS Load Shedding
Built-In (4)
Compatible (1)
Not Compatible (16)
Not Included (1)
Not Required (2)
ATS Poles
2 Poles (13)
3 Poles (18)
ATS Service Disconnect
Yes (6)
No (24)
Price
To
1600 - 1899 (5)
1900 - 2199 (9)
2200 - 2499 (1)
2500 - 2799 (7)
2800 - 3099 (10)
Compare
Generac 400-Amp Automatic Smart Transfer Switch w/ Power Management (Service Disconnect)
Model: RTSW400A3
51% Buy This
(8)
$2,645.00
In-Stock
Free Shipping & Lift Gate
×
Free Shipping & Lift Gate
*This product qualifies for
Free Shipping
anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges may apply, see our full shipping policy for more details.
2% Check Discount
×
2% Check Discount
Save 2% instantly by using our convenient "e-check" option or by simply mailing us a paper check. Yes, your order will be delayed slightly (5 business days). But, if you can wait, the savings are significant.
Add To Cart
Compare
Generac 400-Amp Automatic Smart Transfer Switch w/ Power Management
Model: RTSC400A3
24% Buy This
(2)
$1,792.00
In-Stock
Free Shipping & Lift Gate
×
Free Shipping & Lift Gate
*This product qualifies for
Free Shipping
anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges may apply, see our full shipping policy for more details.
2% Check Discount
×
2% Check Discount
Save 2% instantly by using our convenient "e-check" option or by simply mailing us a paper check. Yes, your order will be delayed slightly (5 business days). But, if you can wait, the savings are significant.
Add To Cart
Compare
Generac 400-Amp Automatic Transfer Switch (120/208V)
Model: RTSN400G3
4% Buy This
Write a Review
$1,930.00
Factory-Direct
Free Shipping & Lift Gate
×
Free Shipping & Lift Gate
*This product qualifies for
Free Shipping
anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges may apply, see our full shipping policy for more details.
2% Check Discount
×
2% Check Discount
Save 2% instantly by using our convenient "e-check" option or by simply mailing us a paper check. Yes, your order will be delayed slightly (5 business days). But, if you can wait, the savings are significant.
Add To Cart
Compare
Kohler RDT Series 400-Amp Automatic Transfer Switch (Service Disconnect)
Model: RDT-CFNC-400ASE
3% Buy This
(1)
$3,089.00
Factory-Direct
Free Shipping & Lift Gate
×
Free Shipping & Lift Gate
*This product qualifies for
Free Shipping
anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges may apply, see our full shipping policy for more details.
2% Check Discount
×
2% Check Discount
Save 2% instantly by using our convenient "e-check" option or by simply mailing us a paper check. Yes, your order will be delayed slightly (5 business days). But, if you can wait, the savings are significant.
Add To Cart
Compare
Cummins OTEC400 - 400-Amp PowerCommand® Outdoor Automatic Transfer Switch
Model: A040C975
3% Buy This
Write a Review
$2,887.00
Factory-Direct
Free Shipping & Lift Gate
×
Free Shipping & Lift Gate
*This product qualifies for
Free Shipping
anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges may apply, see our full shipping policy for more details.
2% Check Discount
×
2% Check Discount
Save 2% instantly by using our convenient "e-check" option or by simply mailing us a paper check. Yes, your order will be delayed slightly (5 business days). But, if you can wait, the savings are significant.
Add To Cart
Compare
Kohler RDT Series 400-Amp Outdoor Automatic Transfer Switch
Model: RDT-CFNC-0400A
2% Buy This
(1)
$1,859.00
Factory-Direct
Free Shipping & Lift Gate
×
Free Shipping & Lift Gate
*This product qualifies for
Free Shipping
anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges may apply, see our full shipping policy for more details.
2% Check Discount
×
2% Check Discount
Save 2% instantly by using our convenient "e-check" option or by simply mailing us a paper check. Yes, your order will be delayed slightly (5 business days). But, if you can wait, the savings are significant.
Add To Cart
Compare
Briggs & Stratton 400-Amp Split Service Automatic Transfer Switch + AC Shedding (Service Disconnect)
Model: 71057
1% Buy This
(2)
$1,999.00
Factory-Direct
Free Shipping & Lift Gate
×
Free Shipping & Lift Gate
*This product qualifies for
Free Shipping
anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges may apply, see our full shipping policy for more details.
2% Check Discount
×
2% Check Discount
Save 2% instantly by using our convenient "e-check" option or by simply mailing us a paper check. Yes, your order will be delayed slightly (5 business days). But, if you can wait, the savings are significant.
Add To Cart
Compare
Kohler RXT Series 400-Amp Outdoor Automatic Transfer Switch
Model: RXT-JFNC-0400A
1% Buy This
Write a Review
$1,838.00
Factory-Direct
Free Shipping & Lift Gate
×
Free Shipping & Lift Gate
*This product qualifies for
Free Shipping
anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges may apply, see our full shipping policy for more details.
2% Check Discount
×
2% Check Discount
Save 2% instantly by using our convenient "e-check" option or by simply mailing us a paper check. Yes, your order will be delayed slightly (5 business days). But, if you can wait, the savings are significant.
Add To Cart
Compare
Briggs & Stratton By ASCO Series 285 - 400-Amp Automatic Transfer Switch (120/240V Single Phase)
Model: 071111
1% Buy This
Write a Review
$2,999.00
Factory-Direct
Free Shipping
×
Free Shipping
*This product qualifies for
Free Shipping
anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges may apply, see our full shipping policy for more details.
2% Check Discount
×
2% Check Discount
Save 2% instantly by using our convenient "e-check" option or by simply mailing us a paper check. Yes, your order will be delayed slightly (5 business days). But, if you can wait, the savings are significant.
Add To Cart
Compare
Briggs & Stratton By ASCO Series 285 - 400-Amp Automatic Transfer Switch (120/240V 3-Phase)
Model: 071113
1% Buy This
Write a Review
$2,999.00
Factory-Direct
Free Shipping
×
Free Shipping
*This product qualifies for
Free Shipping
anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges may apply, see our full shipping policy for more details.
2% Check Discount
×
2% Check Discount
Save 2% instantly by using our convenient "e-check" option or by simply mailing us a paper check. Yes, your order will be delayed slightly (5 business days). But, if you can wait, the savings are significant.
Add To Cart
Compare
Cummins OTEC400 - 400-Amp PowerCommand® Outdoor Automatic Transfer Switch (277/480V 3-Phase)
Model: A040C972
1% Buy This
Write a Review
$2,887.00
Factory-Direct
Free Shipping & Lift Gate
×
Free Shipping & Lift Gate
*This product qualifies for
Free Shipping
anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges may apply, see our full shipping policy for more details.
2% Check Discount
×
2% Check Discount
Save 2% instantly by using our convenient "e-check" option or by simply mailing us a paper check. Yes, your order will be delayed slightly (5 business days). But, if you can wait, the savings are significant.
Add To Cart
Compare
Cummins RA-400-SE - 400-Amp Outdoor Automatic Transfer Switch For RS/RX Generators (Aluminum) (Service Disc.)
Model: A050W853
1% Buy This
Write a Review
$2,699.00
Factory-Direct
Free Shipping
×
Free Shipping
*This product qualifies for
Free Shipping
anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges may apply, see our full shipping policy for more details.
2% Check Discount
×
2% Check Discount
Save 2% instantly by using our convenient "e-check" option or by simply mailing us a paper check. Yes, your order will be delayed slightly (5 business days). But, if you can wait, the savings are significant.
Add To Cart
Compare
Kohler RXT Series 400-Amp Outdoor Automatic Transfer Switch (120/240V 3-Phase)
Model: RXT-JFTC-400A-MV04
1% Buy This
Write a Review
$1,979.00
Factory-Direct
2% Check Discount
×
2% Check Discount
Save 2% instantly by using our convenient "e-check" option or by simply mailing us a paper check. Yes, your order will be delayed slightly (5 business days). But, if you can wait, the savings are significant.
Add To Cart
Compare
Generac 400-Amp Automatic Transfer Switch (277/480V)
Model: RTSN400K3
1% Buy This
Write a Review
$2,175.00
Factory-Direct
Free Shipping & Lift Gate
×
Free Shipping & Lift Gate
*This product qualifies for
Free Shipping
anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges may apply, see our full shipping policy for more details.
2% Check Discount
×
2% Check Discount
Save 2% instantly by using our convenient "e-check" option or by simply mailing us a paper check. Yes, your order will be delayed slightly (5 business days). But, if you can wait, the savings are significant.
Add To Cart
Compare
Briggs & Stratton By ASCO Series 285 - 400-Amp Automatic Transfer Switch (120/208V 3-Phase)
Model: 071112
Write a Review
$2,999.00
Factory-Direct
Free Shipping
×
Free Shipping
*This product qualifies for
Free Shipping
anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges may apply, see our full shipping policy for more details.
2% Check Discount
×
2% Check Discount
Save 2% instantly by using our convenient "e-check" option or by simply mailing us a paper check. Yes, your order will be delayed slightly (5 business days). But, if you can wait, the savings are significant.
Add To Cart
Compare
Briggs & Stratton By ASCO Series 285 - 400-Amp Automatic Transfer Switch (277/480V 3-Phase)
Model: 071115
Write a Review
$2,999.00
Factory-Direct
Free Shipping
×
Free Shipping
*This product qualifies for
Free Shipping
anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges may apply, see our full shipping policy for more details.
2% Check Discount
×
2% Check Discount
Save 2% instantly by using our convenient "e-check" option or by simply mailing us a paper check. Yes, your order will be delayed slightly (5 business days). But, if you can wait, the savings are significant.
Add To Cart
Compare
Cummins OTEC400 - 400-Amp PowerCommand® Indoor Automatic Transfer Switch (120/240V 3-Phase)
Model: A040C967
Write a Review
$2,526.00
Factory-Direct
Free Shipping
×
Free Shipping
*This product qualifies for
Free Shipping
anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges may apply, see our full shipping policy for more details.
2% Check Discount
×
2% Check Discount
Save 2% instantly by using our convenient "e-check" option or by simply mailing us a paper check. Yes, your order will be delayed slightly (5 business days). But, if you can wait, the savings are significant.
Add To Cart
Compare
Cummins OTEC400 - 400-Amp PowerCommand® Outdoor Automatic Transfer Switch (120/240V 3-Phase)
Model: A040C971
Write a Review
$2,887.00
Factory-Direct
Free Shipping & Lift Gate
×
Free Shipping & Lift Gate
*This product qualifies for
Free Shipping
anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges may apply, see our full shipping policy for more details.
2% Check Discount
×
2% Check Discount
Save 2% instantly by using our convenient "e-check" option or by simply mailing us a paper check. Yes, your order will be delayed slightly (5 business days). But, if you can wait, the savings are significant.
Add To Cart
Compare
Cummins OTEC400 - 400-Amp PowerCommand® Indoor Automatic Transfer Switch
Model: A040C974
Write a Review
$2,523.00
Factory-Direct
Free Shipping & Lift Gate
×
Free Shipping & Lift Gate
*This product qualifies for
Free Shipping
anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges may apply, see our full shipping policy for more details.
2% Check Discount
×
2% Check Discount
Save 2% instantly by using our convenient "e-check" option or by simply mailing us a paper check. Yes, your order will be delayed slightly (5 business days). But, if you can wait, the savings are significant.
Add To Cart
Compare
Cummins OTEC400 - 400-Amp PowerCommand® Indoor Automatic Transfer Switch (120/208V 3-Phase)
Model: A040C966
Write a Review
$2,526.00
Factory-Direct
Free Shipping & Lift Gate
×
Free Shipping & Lift Gate
*This product qualifies for
Free Shipping
anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges may apply, see our full shipping policy for more details.
2% Check Discount
×
2% Check Discount
Save 2% instantly by using our convenient "e-check" option or by simply mailing us a paper check. Yes, your order will be delayed slightly (5 business days). But, if you can wait, the savings are significant.
Add To Cart
Compare
Cummins OTEC400 - 400-Amp PowerCommand® Indoor Automatic Transfer Switch (277/480V 3-Phase)
Model: A040C969
Write a Review
$2,526.00
Factory-Direct
Free Shipping & Lift Gate
×
Free Shipping & Lift Gate
*This product qualifies for
Free Shipping
anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges may apply, see our full shipping policy for more details.
2% Check Discount
×
2% Check Discount
Save 2% instantly by using our convenient "e-check" option or by simply mailing us a paper check. Yes, your order will be delayed slightly (5 business days). But, if you can wait, the savings are significant.
Add To Cart
Compare
Cummins OTEC400 - 400-Amp PowerCommand® Outdoor Automatic Transfer Switch (120/208V 3-Phase)
Model: A040C970
Write a Review
$2,887.00
Factory-Direct
Free Shipping & Lift Gate
×
Free Shipping & Lift Gate
*This product qualifies for
Free Shipping
anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges may apply, see our full shipping policy for more details.
2% Check Discount
×
2% Check Discount
Save 2% instantly by using our convenient "e-check" option or by simply mailing us a paper check. Yes, your order will be delayed slightly (5 business days). But, if you can wait, the savings are significant.
Add To Cart
Compare
Cummins RA-400-NSE - 400-Amp Outdoor Automatic Transfer Switch For RS/RX Generators (Aluminum)
Model: A050W633
Write a Review
$1,699.00
Factory-Direct
Free Shipping
×
Free Shipping
*This product qualifies for
Free Shipping
anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges may apply, see our full shipping policy for more details.
2% Check Discount
×
2% Check Discount
Save 2% instantly by using our convenient "e-check" option or by simply mailing us a paper check. Yes, your order will be delayed slightly (5 business days). But, if you can wait, the savings are significant.
Add To Cart
Compare
Honeywell™ 400-Amp SYNC™ Smart Automatic Transfer Switch w/ Power Management
Model: RTSK400A3
Write a Review
$1,799.00
Factory-Direct
Free Shipping & Lift Gate
×
Free Shipping & Lift Gate
*This product qualifies for
Free Shipping
anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges may apply, see our full shipping policy for more details.
2% Check Discount
×
2% Check Discount
Save 2% instantly by using our convenient "e-check" option or by simply mailing us a paper check. Yes, your order will be delayed slightly (5 business days). But, if you can wait, the savings are significant.
Add To Cart
PREVIOUS
PREV
1
2
NEXT
Displaying Products 1 - 24 (of 32
)
Hide
Compare
Clear All
