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 229 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 1-PH 3-PH 1000A NEMA 1
Original price was: $14,830.00.Current price is: $14,533.40. Select options This product has multiple variants. The options may be chosen on the product page
Sale!
ASCO 300 Series Automatic Transfer Switch NON-SE RATED 2 Pole 1-PH 3-PH 1000A NEMA 3R
Original price was: $16,130.00.Current price is: $15,807.40. Select options This product has multiple variants. The options may be chosen on the product page
Sale!
ASCO 300 Series Automatic Transfer Switch NON-SE RATED 2 Pole 1-PH 3-PH 104A NEMA 1
Original price was: $2,770.00.Current price is: $2,714.60. Select options This product has multiple variants. The options may be chosen on the product page
Sale!
ASCO 300 Series Automatic Transfer Switch NON-SE RATED 2 Pole 1-PH 3-PH 104A NEMA 3R
Original price was: $3,170.00.Current price is: $3,106.60. Select options This product has multiple variants. The options may be chosen on the product page
Sale!
ASCO 300 Series Automatic Transfer Switch NON-SE RATED 2 Pole 1-PH 3-PH 1200A NEMA 1
Original price was: $16,410.00.Current price is: $16,081.80. Select options This product has multiple variants. The options may be chosen on the product page
Sale!
ASCO 300 Series Automatic Transfer Switch NON-SE RATED 2 Pole 1-PH 3-PH 150A NEMA 1
Original price was: $3,050.00.Current price is: $2,989.00. Select options This product has multiple variants. The options may be chosen on the product page
Sale!
ASCO 300 Series Automatic Transfer Switch NON-SE RATED 2 Pole 1-PH 3-PH 150A NEMA 3R
Original price was: $3,450.00.Current price is: $3,381.00. Select options This product has multiple variants. The options may be chosen on the product page
Sale!
ASCO 300 Series Automatic Transfer Switch NON-SE RATED 2 Pole 1-PH 3-PH 200A NEMA 1
Original price was: $3,550.00.Current price is: $3,479.00. Select options This product has multiple variants. The options may be chosen on the product page
Sale!
ASCO 300 Series Automatic Transfer Switch NON-SE RATED 2 Pole 1-PH 3-PH 200A NEMA 3R
Original price was: $3,950.00.Current price is: $3,871.00. Select options This product has multiple variants. The options may be chosen on the product page
Sale!
ASCO 300 Series Automatic Transfer Switch NON-SE RATED 2 Pole 1-PH 3-PH 230A NEMA 1
Original price was: $4,130.00.Current price is: $4,047.40. Select options This product has multiple variants. The options may be chosen on the product page
Sale!
ASCO 300 Series Automatic Transfer Switch NON-SE RATED 2 Pole 1-PH 3-PH 230A NEMA 3R
Original price was: $4,530.00.Current price is: $4,439.40. Select options This product has multiple variants. The options may be chosen on the product page
Sale!
ASCO 300 Series Automatic Transfer Switch NON-SE RATED 2 Pole 1-PH 3-PH 260A NEMA 1
Original price was: $4,390.00.Current price is: $4,302.20. Select options This product has multiple variants. The options may be chosen on the product page
Sale!
ASCO 300 Series Automatic Transfer Switch NON-SE RATED 2 Pole 1-PH 3-PH 260A NEMA 3R
Original price was: $5,160.00.Current price is: $5,056.80. Select options This product has multiple variants. The options may be chosen on the product page
Sale!
ASCO 300 Series Automatic Transfer Switch NON-SE RATED 2 Pole 1-PH 3-PH 30A NEMA 1
Original price was: $2,640.00.Current price is: $2,587.20. Select options This product has multiple variants. The options may be chosen on the product page
Sale!
ASCO 300 Series Automatic Transfer Switch NON-SE RATED 2 Pole 1-PH 3-PH 30A NEMA 3R
Original price was: $3,040.00.Current price is: $2,979.20. Select options This product has multiple variants. The options may be chosen on the product page
Sale!
ASCO 300 Series Automatic Transfer Switch NON-SE RATED 2 Pole 1-PH 3-PH 400A NEMA 1
Original price was: $4,880.00.Current price is: $4,782.40. Select options This product has multiple variants. The options may be chosen on the product page
Sale!
ASCO 300 Series Automatic Transfer Switch NON-SE RATED 2 Pole 1-PH 3-PH 400A NEMA 3R
Original price was: $5,650.00.Current price is: $5,537.00. Select options This product has multiple variants. The options may be chosen on the product page
Sale!
ASCO 300 Series Automatic Transfer Switch NON-SE RATED 2 Pole 1-PH 3-PH 600A NEMA 1
Original price was: $9,510.00.Current price is: $9,319.80. Select options This product has multiple variants. The options may be chosen on the product page
Sale!
ASCO 300 Series Automatic Transfer Switch NON-SE RATED 2 Pole 1-PH 3-PH 600A NEMA 3R
Original price was: $10,280.00.Current price is: $10,074.40. Select options This product has multiple variants. The options may be chosen on the product page
Sale!
ASCO 300 Series Automatic Transfer Switch NON-SE RATED 2 Pole 1-PH 3-PH 70A NEMA 1
Original price was: $2,730.00.Current price is: $2,675.40. Select options This product has multiple variants. The options may be chosen on the product page
Sale!
ASCO 300 Series Automatic Transfer Switch NON-SE RATED 2 Pole 1-PH 3-PH 70A NEMA 3R
Original price was: $3,130.00.Current price is: $3,067.40. Select options This product has multiple variants. The options may be chosen on the product page
Sale!
ASCO 300 Series Automatic Transfer Switch NON-SE RATED 2 Pole 1-PH 3-PH 800A NEMA 1
Original price was: $10,720.00.Current price is: $10,505.60. Select options This product has multiple variants. The options may be chosen on the product page
Sale!
ASCO 300 Series Automatic Transfer Switch NON-SE RATED 2 Pole 1-PH 3-PH 800A NEMA 3R
Original price was: $12,020.00.Current price is: $11,779.60. Select options This product has multiple variants. The options may be chosen on the product page
Sale!
ASCO 300 Series Automatic Transfer Switch NON-SE RATED 3 Pole 1-PH 120/240 104A NEMA 3R
Original price was: $2,950.00.Current price is: $2,891.00. Read more

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 1-PH 3-PH 1000A NEMA 1

ASCO 300 Series Automatic Transfer Switch NON-SE RATED 2 Pole 1-PH 3-PH 1000A NEMA 3R

ASCO 300 Series Automatic Transfer Switch NON-SE RATED 2 Pole 1-PH 3-PH 104A NEMA 1

ASCO 300 Series Automatic Transfer Switch NON-SE RATED 2 Pole 1-PH 3-PH 104A NEMA 3R

ASCO 300 Series Automatic Transfer Switch NON-SE RATED 2 Pole 1-PH 3-PH 1200A NEMA 1

ASCO 300 Series Automatic Transfer Switch NON-SE RATED 2 Pole 1-PH 3-PH 150A NEMA 1

ASCO 300 Series Automatic Transfer Switch NON-SE RATED 2 Pole 1-PH 3-PH 150A NEMA 3R

ASCO 300 Series Automatic Transfer Switch NON-SE RATED 2 Pole 1-PH 3-PH 200A NEMA 1

ASCO 300 Series Automatic Transfer Switch NON-SE RATED 2 Pole 1-PH 3-PH 200A NEMA 3R

ASCO 300 Series Automatic Transfer Switch NON-SE RATED 2 Pole 1-PH 3-PH 230A NEMA 1

ASCO 300 Series Automatic Transfer Switch NON-SE RATED 2 Pole 1-PH 3-PH 230A NEMA 3R

ASCO 300 Series Automatic Transfer Switch NON-SE RATED 2 Pole 1-PH 3-PH 260A NEMA 1

ASCO 300 Series Automatic Transfer Switch NON-SE RATED 2 Pole 1-PH 3-PH 260A NEMA 3R

ASCO 300 Series Automatic Transfer Switch NON-SE RATED 2 Pole 1-PH 3-PH 30A NEMA 1

ASCO 300 Series Automatic Transfer Switch NON-SE RATED 2 Pole 1-PH 3-PH 30A NEMA 3R

ASCO 300 Series Automatic Transfer Switch NON-SE RATED 2 Pole 1-PH 3-PH 400A NEMA 1

ASCO 300 Series Automatic Transfer Switch NON-SE RATED 2 Pole 1-PH 3-PH 400A NEMA 3R

ASCO 300 Series Automatic Transfer Switch NON-SE RATED 2 Pole 1-PH 3-PH 600A NEMA 1

ASCO 300 Series Automatic Transfer Switch NON-SE RATED 2 Pole 1-PH 3-PH 600A NEMA 3R

ASCO 300 Series Automatic Transfer Switch NON-SE RATED 2 Pole 1-PH 3-PH 70A NEMA 1

ASCO 300 Series Automatic Transfer Switch NON-SE RATED 2 Pole 1-PH 3-PH 70A NEMA 3R

ASCO 300 Series Automatic Transfer Switch NON-SE RATED 2 Pole 1-PH 3-PH 800A NEMA 1

ASCO 300 Series Automatic Transfer Switch NON-SE RATED 2 Pole 1-PH 3-PH 800A NEMA 3R

ASCO 300 Series Automatic Transfer Switch NON-SE RATED 3 Pole 1-PH 120/240 104A NEMA 3R