Kohler RXT 400A Service-Entrance Automatic Transfer Switch
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At a glance
- Brand
- Kohler
- Shipping
- Free shipping (lower 48)
Everything you need to know
The KOHLER RXT 400-amp automatic transfer switch is the brain of your standby system — it continuously monitors utility power and, the instant it fails, transfers your home to generator power automatically (then back again when the grid returns). Rated for 400A, single-phase, in a weatherproof NEMA aluminum enclosure for indoor or outdoor mounting.
Service-entrance rated — can serve as your home's main disconnect, often simplifying the install and reducing cost.
- Rating: 400A, 120/240V single-phase
- Type: Kohler RXT automatic transfer switch Service-Entrance
- Enclosure: Aluminum, NEMA outdoor-rated
- Compatible with Kohler RCA / RCL home standby generators
Not sure which switch you need? Request a quote and we'll match it to your generator and panel.
Frequently asked questions
Is this a genuine OEM part?+
Yes — sold and shipped as a genuine Kohler 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?+
Free shipping to the lower 48. Most accessories and parts ship within 2–4 business days.
What's the return policy?+
30-day returns on unused parts and accessories in original packaging.
Free curbside shipping
Liftgate delivery to the lower 48. Most orders leave the warehouse in 3–5 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.
Real Kohler warranty
Full 5-year limited warranty — registered and supported through Kohler directly.