Cummins RA100SE 100A Service-Entrance Automatic Transfer Switch
OEM part
dealer
support
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
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?+
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.