Generac RXG24SHA1 100A 24-Circuit Load Center Service-Entrance Automatic Transfer Switch (NEMA 1)
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At a glance
- Amperage
- 100A (100A main circuit breaker)
- Voltage/Phase
- 120/240V single-phase, 60 Hz
- Service Entrance Rated
- Yes (service equipment rated)
- Enclosure
- NEMA 1 indoor, flush-mount powder-coated steel
- Circuits
- 24-space load center, expandable to 40 circuits with tandem breakers
- Transition Type
- Open transition, automatic (service rated)
- Listings
- ETL listed for service equipment and consumer safety
- Withstand Rating
- 10,000A
- Lug Range
- #4 - 3/0 CU/AL 75 C
- Dimensions
- 45.14 in H x 15.5 in W x 4.84 in D
- Weight
- 47 lb (21.3 kg); 58 lb shipped
- Warranty
- 5-year limited
Not sure if this fits?
Why this generator
- All-in-one GenReady panel combines the 100A main breaker, automatic transfer switch, and 24-space load center in a single service-entrance-rated unit
- Whole-house 120/240V single-phase backup coverage, expandable to 40 circuits using tandem breakers
- Built-in load management controls 4 individual HVAC loads standard, expandable to 8 loads with optional Smart Management Modules (SMM)
- Multi-listed to accept Siemens, Murray, Square D, and Eaton 1-inch breakers, including GFCI, AFCI, and tandem types
- Flush-mount NEMA 1 steel indoor enclosure with baked powder-coat finish, ideal for new construction or panel upgrades
- Pairs with Generac standby generators using Evolution or Nexus controllers and includes a 5-year limited warranty
Everything you need to know
Generac RXG24SHA1 100a 24-circuit load center service-entrance automatic transfer switch (NEMA 1 enclosure). 120/240V single-phase, designed to pair with Generac air-cooled home standby generators.
Genuine Generac unit from a factory-authorized dealer. Ships via calculated freight — shipping shown at checkout (heavy/hazmat item). Professional installation available in NC & SC.
Frequently asked questions
Is this a genuine OEM part?+
Yes — sold and shipped as a genuine Generac 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. 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 Generac part
Sold and shipped as a genuine Generac OEM part from a factory-authorized dealer. 30-day returns on unused parts in original packaging.