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100A to 600A · every price published

Cummins automatic transfer switches

38 configurations across 10 families, from $763.42. The transfer switch is what makes a standby generator safe and legal — it isolates your house from the utility before the generator energises anything, so it can never back-feed the line a crew is working on.

Size the switch to your service, not your generator. A 200 amp service takes a 200 amp switch whether the generator behind it is 13kW or 20kW. Ordering to the generator is the most common and most expensive mistake on these jobs, which is why we confirm your service size at the survey before specifying anything.

Residential — RA and RSS

Single phase, 240V, aluminum NEMA 3R cabinets that mount outdoors next to the meter. RA is the standard pairing for air-cooled Cummins home standby units and is available service-entrance rated. RSS is non-service-entrance, for when the existing main stays put.

RA 100A

Service-entrance rated available. 4 configurations.

From
$763.42

RA 150A

Service-entrance rated available. 1 configuration.

From
$1,222.95

RA 200A

Service-entrance rated available. 3 configurations.

From
$976.38

RA 400A

Service-entrance rated available. 2 configurations.

From
$2,223.69

Commercial — OTEC

Open-transition commercial switchgear, 125A to 600A, single and three phase, 208V through 480V, in indoor Type 1 or outdoor NEMA 3R enclosures.

OTEC 125A

208V, 480V · 3Ph · 4 configurations

From
$2,839.29

OTEC 225A

208V, 480V, 240V · 3Ph, 1Ph · 5 configurations

From
$3,637.27

OTEC 400A

208V, 240V, 480V · 3Ph, 1Ph · 8 configurations

From
$4,871.16

OTEC 600A

208V, 240V, 480V · 3Ph, 1Ph · 8 configurations

From
$8,288.82

Every configuration and price

Model Amps Rating Voltage Phase Cabinet Part Price
RA 100 Non-SE 240V 1Ph 1 A051C991 $763.42
RA 100 Non-SE 240V 1Ph 3R-Alum A064G345 $938.37
RA 100 Service entrance 240V 1Ph 3R-Alum A064G545 $1,153.94
RA CSA 100 Service entrance 240V 1Ph 3R-Alum A067J404 $1,597.04
RA 150 Service entrance 240V 1Ph 3R-Alum A066V485 $1,222.95
RA 200 Non-SE 240V 1Ph 3R - Alum. A064G376 $976.38
RA 200 Service entrance 240V 1Ph 3R - Alum. A064G549 $1,097.92
RA CSA 200 Service entrance 240V 1Ph 3R - Alum. A067J405 $1,512.62
RA 400 Non-SE 240V 1Ph 3R A050W633 $2,223.69
RA CSA 400 Service entrance 240V 1Ph 3R - Alum. A066W927 $4,170.65
RA ACCY All — 240V 1Ph n/a A076C684 $214.67
RSS100 100 Non-SE 240V 1Ph 3R A065M392 $1,279.58
RSS200 200 Non-SE 240V 1Ph 3R A065M393 $1,373.94
OTEC 125 Non-SE 208V 3Ph 1 A075F123 $2,839.29
OTEC 125 Non-SE 208V 3Ph 3R A075F124 $3,787.72
OTEC 125 Non-SE 480V 3Ph 1 A075F125 $2,839.29
OTEC 125 Non-SE 480V 3Ph 3R A075F126 $3,787.72
OTEC 225 Non-SE 208V 3Ph 1 A075F135 $3,637.27
OTEC 225 Non-SE 208V 3Ph 3R A075F136 $4,591.75
OTEC 225 Non-SE 480V 3Ph 1 A075F137 $3,637.27
OTEC 225 Non-SE 480V 3Ph 3R A075F138 $4,591.75
OTEC 225 Service entrance 240V 1Ph 3R A075N276 $7,833.22
OTEC 400 Non-SE 208V 3Ph 1 A075F127 $4,871.16
OTEC 400 Non-SE 240V 3Ph 1 A075F128 $4,871.16
OTEC 400 Non-SE 480V 3Ph 1 A075F129 $4,871.16
OTEC 400 Non-SE 208V 3Ph 3R A075F130 $6,113.87
OTEC 400 Non-SE 240V 3Ph 3R A075F131 $6,113.87
OTEC 400 Non-SE 480V 3Ph 3R A075F132 $6,113.87
OTEC 400 Non-SE 240V 1Ph 1 A075F133 $4,871.16
OTEC 400 Non-SE 240V 1Ph 3R A075F134 $6,113.87
OTEC 600 Non-SE 208V 3Ph 1 A075F139 $8,288.82
OTEC 600 Non-SE 240V 3Ph 1 A075F140 $8,288.82
OTEC 600 Non-SE 480V 3Ph 1 A075F141 $8,288.82
OTEC 600 Non-SE 208V 3Ph 3R A075F142 $9,531.52
OTEC 600 Non-SE 240V 3Ph 3R A075F143 $9,531.52
OTEC 600 Non-SE 480V 3Ph 3R A075F144 $9,531.52
OTEC 600 Non-SE 240V 1Ph 1 A075F145 $8,288.82
OTEC 600 Non-SE 240V 1Ph 3R A075F146 $9,531.52

RA accessory kit (part A076C684) — $214.67.

Equipment only. Installation quoted with your generator after a site survey.

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