400A+ Transfer Switches

400A and larger transfer switches from Cummins and Generac for large homes and light-commercial service. NEMA 3R outdoor and 3-phase models available.

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59 products

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  • Cummins RA CSA 400A SE Automatic Transfer Switch, 240V 1Ph, Part A066W927

    Cummins RA CSA 400A SE Automatic Transfer Switch, 240V 1Ph, Part A066W927

    Sale
    Cummins
    $4,170.65 USD
    $4,299.64 USD $4,170.65 USD
    -3%
    Available to order
    Ships in 13-20 weeks by model (ATS ~13 wk, genset ~20 wk)
    SaleIn Stock
  • Cummins RA 400 Amp SE 240V 1ph Automatic Transfer Switches - A050W853

    Cummins RA 400 Amp SE 240V 1ph Automatic Transfer Switches - A050W853

    Sale
    Cummins
    $3,343.63 USD
    $3,447.04 USD $3,343.63 USD
    -3%
    Available to order
    Ships in 13-20 weeks by model (ATS ~13 wk, genset ~20 wk)
    SaleIn Stock
  • Cummins RA 400 Amp NSE 240V 1ph Automatic Transfer Switches - A050W633 — front view

    Cummins RA 400 Amp NSE 240V 1ph Automatic Transfer Switches - A050W633

    Sale
    Cummins
    $2,223.69 USD
    $2,292.46 USD $2,223.69 USD
    -3%
    Available to order
    Ships in 13-20 weeks by model (ATS ~13 wk, genset ~20 wk)
    SaleIn Stock
  • Generac 800A Non-Service Entrance Rated Three Phase Automatic Transfer Switch - RTSN800K3

    Generac 800A Non-Service Entrance Rated Three Phase Automatic Transfer Switch - RTSN800K3

    Sale
    Generac
    $6,249.00 USD
    $6,369.00 USD $6,249.00 USD
    Available to order
    Ships in 2–4 weeks
    SaleIn Stock
  • Generac 800A Non-Service Entrance Rated Three Phase Automatic Transfer Switch - RTSN800G3

    Generac 800A Non-Service Entrance Rated Three Phase Automatic Transfer Switch - RTSN800G3

    Sale
    Generac
    $6,149.00 USD
    $6,269.00 USD $6,149.00 USD
    Available to order
    Ships in 2–4 weeks
    SaleIn Stock
  • Generac 800A Non-Service Entrance Rated Three Phase Automatic Transfer Switch - RTSN800J3

    Generac 800A Non-Service Entrance Rated Three Phase Automatic Transfer Switch - RTSN800J3

    Sale
    Generac
    $6,149.00 USD
    $6,269.00 USD $6,149.00 USD
    Available to order
    Ships in 2–4 weeks
    SaleIn Stock
  • Generac 600A Non-Service Entrance Rated Three Phase Automatic Transfer Switch - RTSN600K3

    Generac 600A Non-Service Entrance Rated Three Phase Automatic Transfer Switch - RTSN600K3

    Sale
    Generac
    $5,969.00 USD
    $6,089.00 USD $5,969.00 USD
    Available to order
    Ships in 2–4 weeks
    SaleIn Stock
  • Generac 800A Non-Service Automatic Transfer Switch - RTSC800A3

    Generac 800A Non-Service Automatic Transfer Switch - RTSC800A3

    Sale
    Generac
    $6,069.00 USD
    $6,189.00 USD $6,069.00 USD
    Available to order
    Ships in 2–4 weeks
    SaleIn Stock
  • Generac 600A Non-Service Entrance Rated Three Phase Automatic Transfer Switch - RTSN600G3

    Generac 600A Non-Service Entrance Rated Three Phase Automatic Transfer Switch - RTSN600G3

    Sale
    Generac
    $5,859.00 USD
    $5,979.00 USD $5,859.00 USD
    Available to order
    Ships in 2–4 weeks
    SaleIn Stock
  • Generac 600A Non-Service Entrance Rated Three Phase Automatic Transfer Switch - RTSN600J3

    Generac 600A Non-Service Entrance Rated Three Phase Automatic Transfer Switch - RTSN600J3

    Sale
    Generac
    $5,859.00 USD
    $5,979.00 USD $5,859.00 USD
    Available to order
    Ships in 2–4 weeks
    SaleIn Stock
  • Generac 600A Non-Service Automatic Transfer Switch - RTSC600A3

    Generac 600A Non-Service Automatic Transfer Switch - RTSC600A3

    Sale
    Generac
    $5,739.00 USD
    $5,849.00 USD $5,739.00 USD
    Available to order
    Ships in 2–4 weeks
    SaleIn Stock
  • Generac 400A Canadian Service Entrance Rated Automatic Transfer Switch - RXSW400A3CUL

    Generac 400A Canadian Service Entrance Rated Automatic Transfer Switch - RXSW400A3CUL

    Sale
    Generac
    $3,359.00 USD
    $3,419.00 USD $3,359.00 USD
    Available to order
    Ships in 2–4 weeks
    SaleIn Stock
  • Generac 400A Service Entrance Rated Automatic Transfer Switch - RTSW400A3

    Generac 400A Service Entrance Rated Automatic Transfer Switch - RTSW400A3

    Sale
    Generac
    $3,159.00 USD
    $3,219.00 USD $3,159.00 USD
    Available to order
    Ships in 2–4 weeks
    SaleIn Stock
  • Generac 400A Non-Service Entrance Rated Three Phase Automatic Transfer Switch - RTSN400K3

    Generac 400A Non-Service Entrance Rated Three Phase Automatic Transfer Switch - RTSN400K3

    Sale
    Generac
    $2,569.00 USD
    $2,619.00 USD $2,569.00 USD
    Available to order
    Ships in 2–4 weeks
    SaleIn Stock
  • Generac 400A Non-Service Entrance Rated Three Phase Automatic Transfer Switch - RTSN400G3

    Generac 400A Non-Service Entrance Rated Three Phase Automatic Transfer Switch - RTSN400G3

    Sale
    Generac
    $2,289.00 USD
    $2,329.00 USD $2,289.00 USD
    Available to order
    Ships in 2–4 weeks
    SaleIn Stock
  • Generac 400A Non-Service Entrance Rated Three Phase Automatic Transfer Switch - RTSN400J3

    Generac 400A Non-Service Entrance Rated Three Phase Automatic Transfer Switch - RTSN400J3

    Sale
    Generac
    $2,309.00 USD
    $2,349.00 USD $2,309.00 USD
    Available to order
    Ships in 2–4 weeks
    SaleIn Stock
  • Generac 400A Non-Service Automatic Transfer Switch - RTSC400A3

    Generac 400A Non-Service Automatic Transfer Switch - RTSC400A3

    Sale
    Generac
    $2,129.00 USD
    $2,169.00 USD $2,129.00 USD
    Available to order
    Ships in 2–4 weeks
    SaleIn Stock
  • Briggs and Stratton Dual 200A / Split 400A Symphony® II SED Power Management Transfer Switch, Single Phase, NEMA 3R - 071057

    Briggs and Stratton Dual 200A / Split 400A Symphony® II SED Power Management Transfer Switch, Single Phase, NEMA 3R - 071057

    Briggs & Stratton
    $3,171.01 USD
    $3,171.01 USD
    Available to order
    Ships in 2–4 weeks
    In Stock
  • Cummins OTEC 600 NSE 600 Amp NSE 240V 1ph Automatic Transfer Switches - A075F146

    Cummins OTEC 600 NSE 600 Amp NSE 240V 1ph Automatic Transfer Switches - A075F146

    Sale
    Cummins
    $9,531.52 USD
    $9,826.31 USD $9,531.52 USD
    -3%
    Available to order
    Ships in 13-20 weeks by model (ATS ~13 wk, genset ~20 wk)
    SaleIn Stock
  • Cummins OTEC 600 NSE 600 Amp NSE 240V 1ph Automatic Transfer Switches - A075F145

    Cummins OTEC 600 NSE 600 Amp NSE 240V 1ph Automatic Transfer Switches - A075F145

    Sale
    Cummins
    $8,288.82 USD
    $8,545.17 USD $8,288.82 USD
    -3%
    Available to order
    Ships in 13-20 weeks by model (ATS ~13 wk, genset ~20 wk)
    SaleIn Stock
  • Cummins OTEC 600 NSE 600 Amp NSE 480V 3ph Automatic Transfer Switches - A075F144 — front view

    Cummins OTEC 600 NSE 600 Amp NSE 480V 3ph Automatic Transfer Switches - A075F144

    Sale
    Cummins
    $9,531.52 USD
    $9,826.31 USD $9,531.52 USD
    -3%
    Available to order
    Ships in 13-20 weeks by model (ATS ~13 wk, genset ~20 wk)
    SaleIn Stock
  • Cummins OTEC 600 NSE 600 Amp NSE 240V 3ph Automatic Transfer Switches - A075F143 — front view

    Cummins OTEC 600 NSE 600 Amp NSE 240V 3ph Automatic Transfer Switches - A075F143

    Sale
    Cummins
    $9,531.52 USD
    $9,826.31 USD $9,531.52 USD
    -3%
    Available to order
    Ships in 13-20 weeks by model (ATS ~13 wk, genset ~20 wk)
    SaleIn Stock
  • Cummins OTEC 600 Amp Automatic Transfer Switch | 208V 3-Phase | NSE — front view

    Cummins OTEC 600 Amp Automatic Transfer Switch | 208V 3-Phase | NSE

    Sale
    Cummins
    $8,288.82 USD
    $8,545.17 USD $8,288.82 USD
    -3%
    Available to order
    Ships in 13-20 weeks by model (ATS ~13 wk, genset ~20 wk)
    SaleIn Stock
  • Generac 400 Amp Automatic Transfer Switch 240V 1P NEMA 3R

    Generac 400 Amp Automatic Transfer Switch 240V 1P NEMA 3R

    Sold Out — Call or Email
    Generac
    $2,126.00 USD
    $2,129.00 USD $2,126.00 USD
    Out of stock
    Call Now
    Sold Out — Call or Email
  • Generac RTS 400A 120/208-Volt 3 Phase ATS NEMA 3R Outdoor

    Generac RTS 400A 120/208-Volt 3 Phase ATS NEMA 3R Outdoor

    Sold Out — Call or Email
    Generac
    $2,286.00 USD
    $2,289.00 USD $2,286.00 USD
    Out of stock
    Call Now
    Sold Out — Call or Email
  • Generac RTS 400A 120/240-Volt 3 Phase ATS NEMA 3R Outdoor

    Generac RTS 400A 120/240-Volt 3 Phase ATS NEMA 3R Outdoor

    Sold Out — Call or Email
    Generac
    $2,306.00 USD
    $2,309.00 USD $2,306.00 USD
    Out of stock
    Call Now
    Sold Out — Call or Email
  • Generac RTSW400A3 120/240-volt 400-Amp Automatic Smart Transfer Switch

    Generac RTSW400A3 120/240-volt 400-Amp Automatic Smart Transfer Switch

    Sold Out — Call or Email
    Generac
    $3,159.00 USD
    $3,219.00 USD $3,159.00 USD
    Out of stock
    Call Now
    Sold Out — Call or Email
  • Briggs and Stratton 600 amp Transfer Switch, 480V, NEMA 3R - 071187

    Briggs and Stratton 600 amp Transfer Switch, 480V, NEMA 3R - 071187

    Sold Out — Call or Email
    Briggs & Stratton
    $12,129.03 USD
    $12,129.03 USD
    Out of stock
    Call Now
    Sold Out — Call or Email
  • Briggs and Stratton 600 amp Transfer Switch, 480V, NEMA 3R - 071159

    Briggs and Stratton 600 amp Transfer Switch, 480V, NEMA 3R - 071159

    Sold Out — Call or Email
    Briggs & Stratton
    $22,795.33 USD
    $22,795.33 USD
    Out of stock
    Call Now
    Sold Out — Call or Email
  • Briggs and Stratton 600 amp Transfer Switch, 240V, NEMA 3R - 071185

    Briggs and Stratton 600 amp Transfer Switch, 240V, NEMA 3R - 071185

    Sold Out — Call or Email
    Briggs & Stratton
    $12,129.03 USD
    $12,129.03 USD
    Out of stock
    Call Now
    Sold Out — Call or Email
  • Briggs and Stratton 600 amp Transfer Switch, 240V, NEMA 3R - 071183

    Briggs and Stratton 600 amp Transfer Switch, 240V, NEMA 3R - 071183

    Sold Out — Call or Email
    Briggs & Stratton
    $6,961.55 USD
    $6,961.55 USD
    Out of stock
    Call Now
    Sold Out — Call or Email
  • Briggs and Stratton 600 amp Transfer Switch, 240V, NEMA 3R - 071157

    Briggs and Stratton 600 amp Transfer Switch, 240V, NEMA 3R - 071157

    Sold Out — Call or Email
    Briggs & Stratton
    $22,795.33 USD
    $22,795.33 USD
    Out of stock
    Call Now
    Sold Out — Call or Email
  • Briggs and Stratton 600 amp Transfer Switch, 240V, NEMA 3R - 071140

    Briggs and Stratton 600 amp Transfer Switch, 240V, NEMA 3R - 071140

    Sold Out — Call or Email
    Briggs & Stratton
    $14,334.07 USD
    $14,334.07 USD
    Out of stock
    Call Now
    Sold Out — Call or Email
  • Briggs and Stratton 600 amp Transfer Switch, 208V, NEMA 3R - 071184

    Briggs and Stratton 600 amp Transfer Switch, 208V, NEMA 3R - 071184

    Sold Out — Call or Email
    Briggs & Stratton
    $12,129.03 USD
    $12,129.03 USD
    Out of stock
    Call Now
    Sold Out — Call or Email
  • Briggs and Stratton 600 amp Transfer Switch, 208V, NEMA 3R - 071156

    Briggs and Stratton 600 amp Transfer Switch, 208V, NEMA 3R - 071156

    Sold Out — Call or Email
    Briggs & Stratton
    $22,795.33 USD
    $22,795.33 USD
    Out of stock
    Call Now
    Sold Out — Call or Email
  • Briggs and Stratton 400 amp Transfer Switch, 480V, NEMA 3R - 071179

    Briggs and Stratton 400 amp Transfer Switch, 480V, NEMA 3R - 071179

    Sold Out — Call or Email
    Briggs & Stratton
    $7,159.46 USD
    $7,159.46 USD
    Out of stock
    Call Now
    Sold Out — Call or Email
  • Briggs and Stratton 400 amp Transfer Switch, 480V, NEMA 3R - 071155

    Briggs and Stratton 400 amp Transfer Switch, 480V, NEMA 3R - 071155

    Sold Out — Call or Email
    Briggs & Stratton
    $15,649.28 USD
    $15,649.28 USD
    Out of stock
    Call Now
    Sold Out — Call or Email
  • Briggs and Stratton 400 amp Transfer Switch, 480V, NEMA 3R - 071115

    Briggs and Stratton 400 amp Transfer Switch, 480V, NEMA 3R - 071115

    Sold Out — Call or Email
    Briggs & Stratton
    $5,973.20 USD
    $5,973.20 USD
    Out of stock
    Call Now
    Sold Out — Call or Email
  • Briggs and Stratton 400 amp Transfer Switch, 240V, NEMA 3R - 071177

    Briggs and Stratton 400 amp Transfer Switch, 240V, NEMA 3R - 071177

    Sold Out — Call or Email
    Briggs & Stratton
    $7,159.46 USD
    $7,159.46 USD
    Out of stock
    Call Now
    Sold Out — Call or Email
  • Briggs and Stratton 400 amp Transfer Switch, 240V, NEMA 3R - 071175

    Briggs and Stratton 400 amp Transfer Switch, 240V, NEMA 3R - 071175

    Sold Out — Call or Email
    Briggs & Stratton
    $4,438.87 USD
    $4,438.87 USD
    Out of stock
    Call Now
    Sold Out — Call or Email
  • Briggs and Stratton 400 amp Transfer Switch, 240V, NEMA 3R - 071153

    Briggs and Stratton 400 amp Transfer Switch, 240V, NEMA 3R - 071153

    Sold Out — Call or Email
    Briggs & Stratton
    $15,649.28 USD
    $15,649.28 USD
    Out of stock
    Call Now
    Sold Out — Call or Email
  • Briggs and Stratton 400 amp Transfer Switch, 240V, NEMA 3R - 071139

    Briggs and Stratton 400 amp Transfer Switch, 240V, NEMA 3R - 071139

    Sold Out — Call or Email
    Briggs & Stratton
    $10,262.28 USD
    $10,262.28 USD
    Out of stock
    Call Now
    Sold Out — Call or Email
  • Briggs and Stratton 400 amp Transfer Switch, 240V, NEMA 3R - 071113

    Briggs and Stratton 400 amp Transfer Switch, 240V, NEMA 3R - 071113

    Sold Out — Call or Email
    Briggs & Stratton
    $4,210.44 USD
    $4,210.44 USD
    Out of stock
    Call Now
    Sold Out — Call or Email
  • Briggs and Stratton 400 amp Transfer Switch, 240V, NEMA 3R - 071111

    Briggs and Stratton 400 amp Transfer Switch, 240V, NEMA 3R - 071111

    Sold Out — Call or Email
    Briggs & Stratton
    $3,936.14 USD
    $3,936.14 USD
    Out of stock
    Call Now
    Sold Out — Call or Email
  • Briggs and Stratton 400 amp Transfer Switch, 208V, NEMA 3R - 071176

    Briggs and Stratton 400 amp Transfer Switch, 208V, NEMA 3R - 071176

    Sold Out — Call or Email
    Briggs & Stratton
    $7,159.46 USD
    $7,159.46 USD
    Out of stock
    Call Now
    Sold Out — Call or Email
  • Briggs and Stratton 400 amp Transfer Switch, 208V, NEMA 3R - 071152

    Briggs and Stratton 400 amp Transfer Switch, 208V, NEMA 3R - 071152

    Sold Out — Call or Email
    Briggs & Stratton
    $15,649.28 USD
    $15,649.28 USD
    Out of stock
    Call Now
    Sold Out — Call or Email
  • Briggs and Stratton 400 amp Transfer Switch, 208V, NEMA 3R - 071112

    Briggs and Stratton 400 amp Transfer Switch, 208V, NEMA 3R - 071112

    Sold Out — Call or Email
    Briggs & Stratton
    $4,210.44 USD
    $4,210.44 USD
    Out of stock
    Call Now
    Sold Out — Call or Email
  • Briggs & Stratton 400A transfer switch

    Briggs & Stratton 400A transfer switch

    Sold Out — Call or Email
    Briggs & Stratton
    $3,171.01 USD
    $3,171.01 USD
    Out of stock
    Call Now
    Sold Out — Call or Email

About 400A+ Transfer Switches

400A and larger transfer switches from Cummins and Generac for large homes and light-commercial service. NEMA 3R outdoor and 3-phase models available.