Generac RTSN400J3 400A 3Ø-120/240V NEMA 3R Automatic Transfer Switch
$1,408.00
Model RTSN400J3, from Generac, is an automatic transfer switch with operating details that include a current rating of 400A, three-phase electrical service, a NEMA 3R enclosure, and a voltage rating of 120/240V.
- Catalog SKU
- RTSN400J3
- Brand
- Generac
- Model
- RTSN400J3
- MPN
- RTSN400J3
Check wattage, fuel type, phase, voltage, runtime, outlets, noise rating, transfer-switch compatibility, SKU, price, and shipping requirements.
- Generators
- Power backup
- Accessories
Product overview
Generac Generac RTSN400J3 400A 3Ø-120/240V NEMA 3R Automatic Transfer Switch is listed by ForgeBay Equipment for buyers comparing generac, transfer switches. ForgeBay Equipment is operated by EQUIPMENT4YOU, LLC.
Key specifications
- SKU
- FB-AP-RTSN400J3
- Brand
- Generac
- Category
- Generac, Transfer Switches
- Availability
- Estimated delivery: 7–14 business days
- Price
- $1,408.00
- Catalog SKU
- RTSN400J3
- Brand
- Generac
- Model
- RTSN400J3
- MPN
- RTSN400J3
- Phase
- 3ø
- Voltage
- 120/240V
What's included
Generac RTSN400J3 400A 3Ø-120/240V NEMA 3R Automatic Transfer Switch includes the product shown in the listing title, image gallery, selected options, and any listed product documents. Optional accessories, installation supplies, and delivery appointment services are not included unless they are explicitly shown on the product page or order confirmation.
Compatibility / fitment
Confirm model fitment, capacity, measurements, power requirements, installation needs, generator wattage, voltage, phase, fuel type, transfer-switch compatibility, and accessory compatibility before ordering. Use the product SKU, documents, images, and category details when comparing fit.
Shipping Information
- Free shipping included.
- Orders are usually delivered within 7–14 business days after order confirmation.
- Some oversized equipment may require carrier appointment scheduling before delivery.
Warranty / support note
Warranty coverage and support details can vary by product and manufacturer. Contact ForgeBay Equipment with the SKU before ordering if you need warranty, parts, delivery, or installation-support information confirmed.
Returns note
Returns are handled according to the Refund Policy. Oversized, installed, or special-order products may require additional review before return approval.
Generac RTSN400J3 automatic transfer switch specifications
Generac model RTSN400J3 operates as an automatic transfer switch and the technical specification includes a NEMA 3R enclosure, a current rating of 400A, three-phase electrical service, and a voltage rating of 120/240V.
Configuration details
- Manufacturer: Generac.
- Model designation: RTSN400J3.
- Equipment type: automatic transfer switch.
- Current rating: 400A.
- Voltage: 120/240V.
- Electrical phase: three-phase.
- Enclosure: NEMA 3R.
| Catalog SKU | RTSN400J3 |
|---|---|
| Brand | Generac |
| Model | RTSN400J3 |
| MPN | RTSN400J3 |
| Phase | 3ø |
| Voltage | 120/240V |
| Transfer Switch Included | Standalone transfer switch |
| Enclosure | NEMA 3R |
| Application | Standby generator electrical transfer applications |
| Condition | New |
Free shipping on every product
Free shipping on all products. Orders are usually delivered within 7–14 business days after order confirmation. Some oversized equipment may require carrier appointment scheduling before delivery.
Free shipping is included with this product.
Free shipping on all products. Orders are usually delivered within 7–14 business days after order confirmation.
Some oversized equipment may require carrier appointment scheduling before delivery.
How delivery is handled
- Order confirmation: Your order details, SKU, price, and availability are reviewed after checkout.
- Carrier planning: Some oversized equipment may require carrier appointment scheduling before delivery.
- Tracking and support: Tracking or order-status details are provided when available. Contact ForgeBay Equipment with the product SKU for shipping support.
Generac RTSN400J3 400A 3Ø-120/240V NEMA 3R Automatic Transfer Switch - SKU FB-AP-RTSN400J3 includes free shipping. Orders are usually delivered within 7–14 business days after order confirmation.
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Generac RTSW200J3 200A 3Ø-120/240V Service Rated NEMA 3R Automatic Transfer Switch
Free shipping is included on every product.
Checkout and customer details are handled through WooCommerce.
Orders are usually delivered within 7–14 business days after order confirmation.
Some oversized equipment may require carrier appointment scheduling before delivery.




