Cummins RA100 100A Non-Service-Entrance Automatic Transfer Switch
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At a glance
- Amperage
- 100 A
- Poles
- 2-pole
- Voltage
- 120/240V
- Phase
- Single phase
- Service Entrance Rated
- No (NSE = Non-Service Entrance)
- Enclosure
- NEMA 3R, aluminum (indoor/outdoor)
- Dimensions
- 23.3 in L x 19.8 in W x 7.2 in H
- Weight
- 58 lb
- Listings
- UL 1008 listed; NEMA ICS 10, NFPA 70
- Warranty
- 2-year limited
Why this generator
- 100-amp, 2-pole automatic transfer switch for 120/240V single-phase standby systems, matched to Cummins RS/RX home standby generators
- Non-service-entrance (NSE) configuration installs downstream of your existing main service panel
- Corrosion-resistant aluminum NEMA 3R enclosure rated for outdoor or indoor installation
- Monitors utility power 24/7 and automatically starts the generator and transfers the load on an outage, then switches back when utility power is restored
- UL 1008 listed and compliant with NEMA ICS 10 and NFPA 70 for code-compliant installation
- Backed by a 2-year limited warranty
Everything you need to know
100A, 240Vac, 2-Pole, NEMA 3R enclosure (For Cummins Connect Series Generators Only)
Highlights
- Factory-authorized Cummins dealer
- MAP pricing — no hidden markup
- Whole-home standby coverage
- Expert sizing & installation available across NC & SC
Part Number: A064G345
Ships via calculated freight — shipping shown at checkout (heavy/hazmat item).
Frequently asked questions
Is this a genuine OEM part?+
Yes — sold and shipped as a genuine Cummins part from a factory-authorized dealer.
Will it fit my unit?+
Check your model and year — message us with that info and we'll confirm fit before you order.
How fast does it ship?+
Shipping is calculated at checkout (batteries, transfer switches and oversized items). Most leave the warehouse in 2–4 business days.
What's the return policy?+
30-day returns on unused parts and accessories in original packaging.
Fast nationwide shipping
Shipping calculated at checkout. Most items leave the warehouse in 2–4 business days.
Install help, no upsell
We size, spec, and connect you with a vetted local installer — or talk your contractor through it for free.
Genuine Cummins part
Sold and shipped as a genuine Cummins OEM part from a factory-authorized dealer. 30-day returns on unused parts in original packaging.