Transfer Switches

Thomson Power Systems manufactures both power contactor and circuit breaker based Transfer Switches to meet your requirements. Our complete line up of Standard, Service Entrance and Bypass designs are available from 100A to 4000A.

Transfer switches are available in stock for quick shipment. Alternatively, our engineering team is dedicated to design and develop switches for your application.

Showing 1–40 of 336 results

Sale!
ASCO 185 Series Automatic Transfer Switch NON-SE RATED 100A NEMA 1
Original price was: $1,370.00.Current price is: $1,342.60. Add to cart
Sale!
ASCO 185 Series Automatic Transfer Switch NON-SE RATED 100A NEMA 3R
Original price was: $1,480.00.Current price is: $1,450.40. Add to cart
Sale!
ASCO 185 Series Automatic Transfer Switch NON-SE RATED 200A NEMA 1
Original price was: $2,020.00.Current price is: $1,979.60. Add to cart
Sale!
ASCO 185 Series Automatic Transfer Switch NON-SE RATED 200A NEMA 3R
Original price was: $2,130.00.Current price is: $2,087.40. Add to cart
Sale!
ASCO 185 Series Automatic Transfer Switch NON-SE RATED 230A NEMA 1
Original price was: $2,350.00.Current price is: $2,303.00. Add to cart
Sale!
ASCO 185 Series Automatic Transfer Switch NON-SE RATED 230A NEMA 3R
Original price was: $2,470.00.Current price is: $2,420.60. Add to cart
Sale!
ASCO 185 Series Automatic Transfer Switch NON-SE RATED 260A NEMA 1
Original price was: $2,970.00.Current price is: $2,910.60. Add to cart
Sale!
ASCO 185 Series Automatic Transfer Switch NON-SE RATED 260A NEMA 3R
Original price was: $3,370.00.Current price is: $3,302.60. Add to cart
Sale!
ASCO 185 Series Automatic Transfer Switch NON-SE RATED 400A NEMA 1
Original price was: $3,630.00.Current price is: $3,557.40. Add to cart
Sale!
ASCO 185 Series Automatic Transfer Switch NON-SE RATED 400A NEMA 3R
Original price was: $4,040.00.Current price is: $3,959.20. Add to cart
Sale!
ASCO 185 Series Automatic Transfer Switch SE RATED 100A NEMA 1
Original price was: $2,660.00.Current price is: $2,606.80. Add to cart
Sale!
ASCO 185 Series Automatic Transfer Switch SE RATED 100A NEMA 3R
Original price was: $2,720.00.Current price is: $2,665.60. Add to cart
Sale!
ASCO 185 Series Automatic Transfer Switch SE RATED 200A NEMA 1
Original price was: $2,720.00.Current price is: $2,665.60. Add to cart
Sale!
ASCO 185 Series Automatic Transfer Switch SE RATED 200A NEMA 3R
Original price was: $2,870.00.Current price is: $2,812.60. Add to cart
Sale!
ASCO 185 Series Automatic Transfer Switch SE RATED 400A NEMA 1
Original price was: $7,910.00.Current price is: $7,751.80. Add to cart
Sale!
ASCO 185 Series Automatic Transfer Switch SE RATED 400A NEMA 3R
Original price was: $8,360.00.Current price is: $8,192.80. Add to cart
Sale!
ASCO 300 Series Automatic Transfer Switch NON-SE RATED 2 Pole 1000A NEMA 1
Original price was: $12,460.00.Current price is: $12,210.80. Add to cart
Sale!
ASCO 300 Series Automatic Transfer Switch NON-SE RATED 2 Pole 1000A NEMA 3R
Original price was: $13,550.00.Current price is: $13,279.00. Add to cart
Sale!
ASCO 300 Series Automatic Transfer Switch NON-SE RATED 2 Pole 104A NEMA 1
Original price was: $2,330.00.Current price is: $2,283.40. Add to cart
Sale!
ASCO 300 Series Automatic Transfer Switch NON-SE RATED 2 Pole 104A NEMA 3R
Original price was: $2,670.00.Current price is: $2,616.60. Add to cart
Sale!
ASCO 300 Series Automatic Transfer Switch NON-SE RATED 2 Pole 1200A NEMA 1
Original price was: $13,790.00.Current price is: $13,514.20. Add to cart
Sale!
ASCO 300 Series Automatic Transfer Switch NON-SE RATED 2 Pole 150A NEMA 1
Original price was: $2,560.00.Current price is: $2,508.80. Add to cart
Sale!
ASCO 300 Series Automatic Transfer Switch NON-SE RATED 2 Pole 150A NEMA 3R
Original price was: $2,900.00.Current price is: $2,842.00. Add to cart
Sale!
ASCO 300 Series Automatic Transfer Switch NON-SE RATED 2 Pole 200A NEMA 1
Original price was: $2,980.00.Current price is: $2,920.40. Add to cart
Sale!
ASCO 300 Series Automatic Transfer Switch NON-SE RATED 2 Pole 200A NEMA 3R
Original price was: $3,320.00.Current price is: $3,253.60. Add to cart
Sale!
ASCO 300 Series Automatic Transfer Switch NON-SE RATED 2 Pole 230A NEMA 1
Original price was: $3,470.00.Current price is: $3,400.60. Add to cart
Sale!
ASCO 300 Series Automatic Transfer Switch NON-SE RATED 2 Pole 230A NEMA 3R
Original price was: $3,810.00.Current price is: $3,733.80. Add to cart
Sale!
ASCO 300 Series Automatic Transfer Switch NON-SE RATED 2 Pole 260A NEMA 1
Original price was: $3,690.00.Current price is: $3,616.20. Add to cart
Sale!
ASCO 300 Series Automatic Transfer Switch NON-SE RATED 2 Pole 260A NEMA 3R
Original price was: $4,340.00.Current price is: $4,253.20. Add to cart
Sale!
ASCO 300 Series Automatic Transfer Switch NON-SE RATED 2 Pole 30A NEMA 1
Original price was: $2,220.00.Current price is: $2,175.60. Add to cart
Sale!
ASCO 300 Series Automatic Transfer Switch NON-SE RATED 2 Pole 30A NEMA 3R
Original price was: $2,560.00.Current price is: $2,508.80. Add to cart
Sale!
ASCO 300 Series Automatic Transfer Switch NON-SE RATED 2 Pole 400A NEMA 1
Original price was: $4,100.00.Current price is: $4,018.00. Add to cart
Sale!
ASCO 300 Series Automatic Transfer Switch NON-SE RATED 2 Pole 400A NEMA 3R
Original price was: $4,750.00.Current price is: $4,655.00. Add to cart
Sale!
ASCO 300 Series Automatic Transfer Switch NON-SE RATED 2 Pole 600A NEMA 1
Original price was: $7,990.00.Current price is: $7,830.20. Add to cart
Sale!
ASCO 300 Series Automatic Transfer Switch NON-SE RATED 2 Pole 600A NEMA 3R
Original price was: $8,640.00.Current price is: $8,467.20. Add to cart
Sale!
ASCO 300 Series Automatic Transfer Switch NON-SE RATED 2 Pole 70A NEMA 1
Original price was: $2,290.00.Current price is: $2,244.20. Add to cart
Sale!
ASCO 300 Series Automatic Transfer Switch NON-SE RATED 2 Pole 70A NEMA 3R
Original price was: $2,630.00.Current price is: $2,577.40. Add to cart
Sale!
ASCO 300 Series Automatic Transfer Switch NON-SE RATED 2 Pole 800A NEMA 1
Original price was: $9,010.00.Current price is: $8,829.80. Add to cart
Sale!
ASCO 300 Series Automatic Transfer Switch NON-SE RATED 2 Pole 800A NEMA 3R
Original price was: $10,100.00.Current price is: $9,898.00. Add to cart
Sale!
ASCO 300 Series Automatic Transfer Switch NON-SE RATED 3 Pole 1-PH 120/240 100A NEMA 3R
Original price was: $2,950.00.Current price is: $2,891.00. Add to cart

ASCO 185 Series Automatic Transfer Switch NON-SE RATED 100A NEMA 1

ASCO 185 Series Automatic Transfer Switch NON-SE RATED 100A NEMA 3R

ASCO 185 Series Automatic Transfer Switch NON-SE RATED 200A NEMA 1

ASCO 185 Series Automatic Transfer Switch NON-SE RATED 200A NEMA 3R

ASCO 185 Series Automatic Transfer Switch NON-SE RATED 230A NEMA 1

ASCO 185 Series Automatic Transfer Switch NON-SE RATED 230A NEMA 3R

ASCO 185 Series Automatic Transfer Switch NON-SE RATED 260A NEMA 1

ASCO 185 Series Automatic Transfer Switch NON-SE RATED 260A NEMA 3R

ASCO 185 Series Automatic Transfer Switch NON-SE RATED 400A NEMA 1

ASCO 185 Series Automatic Transfer Switch NON-SE RATED 400A NEMA 3R

ASCO 185 Series Automatic Transfer Switch SE RATED 100A NEMA 1

ASCO 185 Series Automatic Transfer Switch SE RATED 100A NEMA 3R

ASCO 185 Series Automatic Transfer Switch SE RATED 200A NEMA 1

ASCO 185 Series Automatic Transfer Switch SE RATED 200A NEMA 3R

ASCO 185 Series Automatic Transfer Switch SE RATED 400A NEMA 1

ASCO 185 Series Automatic Transfer Switch SE RATED 400A NEMA 3R

ASCO 300 Series Automatic Transfer Switch NON-SE RATED 2 Pole 1000A NEMA 1

ASCO 300 Series Automatic Transfer Switch NON-SE RATED 2 Pole 1000A NEMA 3R

ASCO 300 Series Automatic Transfer Switch NON-SE RATED 2 Pole 104A NEMA 1

ASCO 300 Series Automatic Transfer Switch NON-SE RATED 2 Pole 104A NEMA 3R

ASCO 300 Series Automatic Transfer Switch NON-SE RATED 2 Pole 1200A NEMA 1

ASCO 300 Series Automatic Transfer Switch NON-SE RATED 2 Pole 150A NEMA 1

ASCO 300 Series Automatic Transfer Switch NON-SE RATED 2 Pole 150A NEMA 3R

ASCO 300 Series Automatic Transfer Switch NON-SE RATED 2 Pole 200A NEMA 1

ASCO 300 Series Automatic Transfer Switch NON-SE RATED 2 Pole 200A NEMA 3R

ASCO 300 Series Automatic Transfer Switch NON-SE RATED 2 Pole 230A NEMA 1

ASCO 300 Series Automatic Transfer Switch NON-SE RATED 2 Pole 230A NEMA 3R

ASCO 300 Series Automatic Transfer Switch NON-SE RATED 2 Pole 260A NEMA 1

ASCO 300 Series Automatic Transfer Switch NON-SE RATED 2 Pole 260A NEMA 3R

ASCO 300 Series Automatic Transfer Switch NON-SE RATED 2 Pole 30A NEMA 1

ASCO 300 Series Automatic Transfer Switch NON-SE RATED 2 Pole 30A NEMA 3R

ASCO 300 Series Automatic Transfer Switch NON-SE RATED 2 Pole 400A NEMA 1

ASCO 300 Series Automatic Transfer Switch NON-SE RATED 2 Pole 400A NEMA 3R

ASCO 300 Series Automatic Transfer Switch NON-SE RATED 2 Pole 600A NEMA 1

ASCO 300 Series Automatic Transfer Switch NON-SE RATED 2 Pole 600A NEMA 3R

ASCO 300 Series Automatic Transfer Switch NON-SE RATED 2 Pole 70A NEMA 1

ASCO 300 Series Automatic Transfer Switch NON-SE RATED 2 Pole 70A NEMA 3R

ASCO 300 Series Automatic Transfer Switch NON-SE RATED 2 Pole 800A NEMA 1

ASCO 300 Series Automatic Transfer Switch NON-SE RATED 2 Pole 800A NEMA 3R

ASCO 300 Series Automatic Transfer Switch NON-SE RATED 3 Pole 1-PH 120/240 100A NEMA 3R