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Model A067J404 (RA112S3) | 100 Amp | 120/240V Single-Phase, 2-Pole | Service Entrance Rated | 22kA Withstand Rating | UL 1008 & CSA C22.2 Listed | Compatible with Cummins RS Series Generators
The Cummins Automatic Transfer Switch (Part No. A067J404, Model RA112S3) is a 100 Amp, 120/240V single-phase, service entrance rated switch designed to work with Cummins Quiet Connect RS series generators. This dual-listed UL 1008 and CSA C22.2 variant provides seamless, automatic power transfer between utility and generator sources, ensuring reliable standby power for residential and light-commercial applications.
This switch and generator combination is engineered for simplified, quicker installation in an outdoor-rated enclosure. The RA transfer switch monitors utility power 24 hours a day, 7 days a week. When utility power fails, the generator is signaled to start and the switch automatically transfers the load; when utility voltage returns, the load is automatically switched back to utility power with no action required from the homeowner.
100 Amp, 120/240V Single-Phase Rating: Built for residential and light-commercial standby power systems.
Dual UL & CSA Listing: Certified to both UL 1008 and CSA C22.2 standards, supporting installations requiring Canadian code compliance.
Automatic Power Transfer: Continuously monitors utility power and automatically transfers loads to generator power during outages, then back to utility once stable.
Cummins Quiet Connect Compatibility: Designed for integration with Cummins RS Series Quiet Connect standby generators.
Service Entrance Rated: Utilizes UL 489 listed circuit breakers, suitable for service entrance installations.
Outdoor-Rated Enclosure: Aluminum-clad construction supports indoor or outdoor mounting for dependable long-term operation.
This transfer switch is intended for use exclusively with Cummins-approved RS Series generator models; installing with any other generator model will void the warranty. It is suitable for standby power systems in residential and light-commercial applications and adheres to NEC and NFPA requirements.
Installation: Field-installable by a certified Cummins technician or licensed electrician.
| Part Number | A067J404 |
| Model | RA112S3 (CSA & UL Variant) |
| Manufacturer | Cummins |
| Amps | 100 |
| Voltage | 120/240V |
| Phase | 1Ph, 2-Pole |
| Withstand/Close Rating | 22 kA |
| Certifications | UL 1008, CSA C22.2 |
| Enclosure | Service Entrance Rated, Aluminum-Clad, Outdoor Rated |
| Compatibility | Cummins RS Series Quiet Connect Generators (13–100 kW Range) |
Large generator, transfer switch, and warranty items can have extended lead times. PES will confirm freight, delivery timing, and compatibility before fulfillment. Please confirm voltage, amperage, enclosure, freight, and lead time with PES before placing your final order.
● Confirm Availability | Contact PES to verify lead time and freight before ordering
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