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)
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?+
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.