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Model A064G345 (RA112N3) | 100 Amp | 120/240V Single-Phase, 2-Pole | Non-Service Entrance (NSE) | NEMA 3R Aluminum Enclosure | UL 1008 Listed | Compatible with Cummins RS Series Generators
The Cummins RA 100 Amp Automatic Transfer Switch (MPN A064G345) is a genuine OEM accessory designed to provide reliable power transfer between utility and generator sources. Engineered for 120/240V single-phase applications, this Non-Service Entrance (NSE) ATS ensures continuous and automatic power availability for residential and light-commercial installations. Built with precision and durability, it guarantees smooth operation, quick response, and long-term reliability under all load conditions.
This 2-pole switch uses a break-before-make design that fully isolates generator power from utility power, backed by both mechanical and electrical interlocks that prevent simultaneous connection to emergency and normal power sources. Long-life, high-pressure silver-alloy contacts resist burning and pitting, while mechanically held contacts in both normal and emergency positions keep the unit quiet during operation.
100 Amp, 120/240V Single-Phase Rating: Built for whole-house or light-commercial electrical systems requiring dependable standby power.
Automatic Power Transfer: Monitors utility power 24/7 and automatically transfers loads between utility and generator sources during outages, with no homeowner action required.
Cummins Quiet Connect Compatibility: Designed for integration with Cummins RS Series Quiet Connect standby generators.
Non-Service Entrance (NSE) Configuration: Suitable for protected installations where service entrance switching is handled by a separate device.
Break-Before-Make Switching: Isolates generator power from utility power, with mechanical and electrical interlocks preventing simultaneous connection to both sources.
Durable Silver-Alloy Contacts: High-pressure silver-alloy contacts resist burning and pitting for extended mechanical and electrical life.
Corrosion-Resistant Enclosure: NEMA 3R aluminum housing rated for dependable indoor or sheltered outdoor use.
The Cummins RA 100 Amp NSE Automatic Transfer Switch provides dependable power switching for standby systems. When a utility outage occurs, it automatically transfers the electrical load to generator power, and switches back once the grid is restored. Compact, efficient, and built for reliability, it is ideal for residential properties, small businesses, and light-commercial sites requiring automatic standby power availability.
Installation: Field-installable by a certified Cummins technician or licensed electrician; suitable for both indoor and sheltered outdoor mounting due to the NEMA 3R aluminum enclosure.
| Part Number (MPN) | A064G345 |
| Model | RA112N3 |
| Manufacturer | Cummins |
| Product Type | Automatic Transfer Switch (NSE) |
| Rated Amperage | 100A |
| Voltage | 120/240V AC |
| Phase | Single Phase (1Ph), 2-Pole |
| Enclosure Type | Non-Service Entrance (NSE), NEMA 3R Aluminum, Indoor/Outdoor |
| Operation | Automatic Power Transfer Between Utility and Generator |
| Total Transfer Time | Will Not Exceed 100 msec |
| Withstand/Close Rating (WCR) | 22,000 A |
| Weight | 36 lb |
| Dimensions (H × W × D) | 30.4 × 12.9 × 23.2 in |
| Operating Temperature Range | −13°F to 131°F (−25°C to 55°C) |
| Installation | Field-Installable by Certified Cummins Technician or Licensed Electrician |
Genuine Cummins OEM component covered under Cummins' 2-Year Limited Warranty.
Meets UL 1008 certification for automatic transfer switches.
Complies with NEC and NFPA 70 standards for standby generator systems.
Approved for use with Cummins RS22–RS100 Quiet Connect generator models.
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