Automatic Transfer Switch (ATS)
When utility power fails, your home standby generator starts automatically and the ATS connects it to your home’s electrical system, enabling it to power your home.
When utility power is restored, the ATS will reconnect your home to utility power after which the generator will automatically cool down and shut down until it’s needed again.
Cummins offers multiple ATS options for our full range of home generators. Your local Cummins dealer will help you identify the correct solution for your specific needs.
ATS At-a-Glance
- Does all the work, so you don’t have to look for your generator in the dark
- Automatically switches your home's power source to your generator when utility power fails
- Automatically switches back to utility power when the outage is over
Automatic Transfer Switch Models & Power Ratings
| Model | Rating (Amps) | Voltage | Enclosure | Dimensions (H x W x D) | Weight | Full Specs |
|---|---|---|---|---|---|---|
| RA 100 NSE | 100 | 120/240V 1 phase | 3R | 24.0 x 17.0 x 7.4 in (619 x 433 x 187 mm) | 33 lbs / 15 kg |
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| RA 200 NSE | 200 | 120/240V 1 phase | 3R | 27.1 x 18.2 x 7.4 in (688 x 463 x 187 mm) | 46 lbs / 21 kg |
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| RA 400 NSE | 400 | 120/240V 1 phase | 3R - Aluminum | 36.9 x 24.9 x 11.1 in (937 x 633 x 282 mm) | 64.5 lbs / 29.3 kg |
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| RA 100 SE | 100 | 120/240V 1 phase | 3R | 23.3 x 19.8 x 7.2 in (591 x 503 x 182 mm) | 58 lbs / 26 kg |
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| RA 200 SE | 200 | 120/240V 1 phase | 3R | 23.3 x 19.8 x 7.2 in (591 x 503 x 182 mm) | 58 lbs / 26 kg |
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| RA 400 SE | 400 | 120/240V 1 phase | 3R - Aluminum | 47.9 x 23.4 x 11.3 in (1217 x 594 x 287 mm) | 95.6 lbs / 43.4 kg |
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