Cummins RSS100 100A Non-Service-Entrance Automatic Transfer Switch
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At a glance
- Product Type
- Automatic Transfer Switch (ATS) — not a generator
- Amperage
- 100 Amp
- Poles
- 2-pole
- Voltage
- 120/240V, 60 Hz
- Phase
- Single-phase
- Service Entrance Rated
- No (Non-SE rated)
- Enclosure
- NEMA 3R (outdoor rated)
- Dimensions
- 24 in H x 17 in W x 7 in D
- Weight
- 47 lbs
- Listing
- UL 1008 Listed; complies with NEMA ICS 10
- Withstand Rating
- 22,000 A (with specified Square D / Eaton breakers up to 100-125A)
- Battery Charger
- Integrated 2-amp regulated charger
- Warranty
- 2-year parts/labor/travel standard (5-year optional)
Not sure if this fits?
Why this generator
- 100-Amp automatic transfer switch that monitors utility power 24/7 and switches your home to generator power automatically during an outage
- Fully automatic control with selectable generator exercise at repeatable intervals, configurable from the front panel without special tools
- Weather-ready NEMA 3R outdoor-rated enclosure for reliable installation outside the home
- Integrated 2-amp regulated battery charger keeps the standby generator battery ready between runs
- UL 1008 listed with independent break-before-make action for safe, code-compliant transfer
- Compact 47-lb unit (24 x 17 x 7 in) suited to residential and light-commercial standby power systems
Everything you need to know
100A, 240Vac, 2-Pole, NEMA 3R enclosure, LCD display, Open Transition, Configurable Exerciser Scheduler (Universal Transfer Switch)
Highlights
- Factory-authorized Cummins dealer
- MAP pricing — no hidden markup
- Whole-home standby coverage
- Expert sizing & installation available across NC & SC
Part Number: A065M392
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.