270-223-6302
service@BriteGenerators.com
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Franklin, KY 42134

400A Transfer Switch – Service Entrance Rated Outdoor ATS | Generac RTSW400A3

400A Transfer Switch – Service Entrance Rated Outdoor ATS | Generac RTSW400A3

This 400A Service Entrance Rated Automatic Transfer Switch offers powerful load management, a NEMA 3R aluminum enclosure, and a rugged Generac contactor. Backed by a 5-year limited warranty.

$3,219.00

MPN: 34567800513 SKU RTSW400A3 Category Tags , , , , Brand:

Most orders ship within 1-2 business days when in stock. Many items ship directly from our manufacturer or authorized distribution partners (including Generac facility in Wisconsin).
Delivery timelines vary by product and location.

Estimated delivery:

  • Standard parcel items: typically 5-10 business days

  • Freight (LTL) items: delivery is scheduled and can take longer depending on appointment availability and access requirements

Tracking is emailed when your order ships. Freight carriers may call to schedule delivery.

If an item is not currently available, it may be listed as Backorder. Backordered items are ordered from the manufacturer and ship when available.

Typical backorder delivery is 5–10 business days, but lead times can vary based on manufacturer availability.

Once a special order/backorder ships, it cannot be cancelled.

Some products ship by Freight (LTL) due to weight or packaging.

Freight deliveries are:

  • Curbside delivery (carrier brings it to the end of the driveway or nearest safe point)

  • Appointment-based (carrier may contact you to schedule)

Additional carrier fees may apply for:

  • Residential delivery

  • Liftgate service

  • Limited access locations

  • Re-delivery or storage due to missed appointments

If your order requires a freight quote, we will confirm delivery details and finalize shipping costs after you put in your order. We will send the final invoice for payment once we have verified the details.

Parcel (non-freight) items: returns may be accepted within 30 days of delivery if the product is new, unused, undamaged, and in original packaging with all accessories. A Return Authorization (RA) is required. Up to a 20% restocking fee may apply. Original shipping is non-refundable. Learn more by visiting our Return Policy page.

Freight (LTL) items: final sale unless the item arrives damaged or defective.

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Description

Generac 400A Automatic Transfer Switch – Model RTSW400A3

Designed for whole-home backup, the Generac RTSW400A3 400A Automatic Transfer Switch is built to handle serious power needs with smooth transition, safety, and dependability. Housed in a durable NEMA 3R aluminum enclosure, this switch manages up to 96,000 watts and is compatible with a wide range of Generac generators.

  • Reliable 400 Amp Capacity: Handles demanding home or light commercial loads.
  • Durable Aluminum Enclosure: NEMA 3R rated for outdoor use in any weather.
  • ETL Listed: Built to industry safety and performance standards.
  • Open Transition Load Transfer: Designed for minimal interruption and long-term generator use.
  • Time-Delay Features: Includes warmup, transfer, and cooldown delays for safe switching and generator performance.
  • Compatible With: Dozens of Generac standby models (QT, RG, RD series).

Key Specifications

  • Amperage: 400A
  • Voltage: 120/240V Single Phase
  • Max Wattage: 96,000W
  • Enclosure: NEMA 3R Aluminum
  • Engine Warm-Up Delay: 5 sec
  • Transfer Delay: 10 sec
  • Re-Transfer Delay: 15 sec
  • Withstand Current: 22,000A
  • Dimensions: 48″ H x 21.75″ W x 10″ D

Additional information

Weight 140 lbs
Dimensions 48 × 21.8 × 10 in
Amps

400A
Phase

Single-phase
Enclosure

NEMA 3R (Aluminum)
Service Entrance Rated

Yes

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