Cummins RA100SE 100A Service-Entrance Automatic Transfer Switch
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At a glance
- Product Type
- Automatic Transfer Switch (RA series)
- Amperage
- 100 A
- Poles
- 2-pole
- Voltage
- 120/240 V
- Phase
- Single phase
- Service Entrance Rated
- Yes
- Enclosure
- Aluminum, NEMA Type 3R (indoor/outdoor)
- UL Listing
- UL 1008 listed
- Weight
- 58 lbs
- Warranty
- 2-year limited warranty
Not sure if this fits?
Why this generator
- 100-amp service entrance rated automatic transfer switch for 120/240V single-phase residential and light commercial standby systems
- UL 1008 listed for transfer switch safety, with mechanical and electrical interlocks that prevent simultaneous utility and generator connection
- Aluminum NEMA Type 3R enclosure rated for indoor or outdoor installation
- Monitors utility power 24/7 and automatically starts the generator and transfers the load when utility power fails
- Designed to integrate with Cummins RS-series home standby generator sets
- Backed by a 2-year limited warranty
Everything you need to know
100A, 240Vac, 2-Pole, NEMA 3R enclosure, Service Entrance Rated. (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: A064G545
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?+
Low cost ground shipping — 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
Low cost ground shipping — calculated at checkout. Typically ships in less than 2 weeks.
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.