Generac RTSN400J3 400A 3Ø-120/240V NEMA 3R Automatic Transfer Switch
$1,408.00
Generac RTSN400J3 400A 3Ø-120/240V NEMA 3R Automatic Transfer Switch is listed as transfer switch equipment for Transfer Switches buyers. Use SKU SH-AP-RTSN400J3 when comparing this item. Specifications include 400A, 3ø, 120/240V, NEMA 3R. Review the model number, product images, technical details, package information, and application requirements before selection. Confirm compatibility with the equipment, electrical system, workspace, project requirements, and installation planning before purchase.
- 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 Steel Haul Equipment for buyers comparing generac, transfer switches. Steel Haul Equipment is operated by THE EQUIPMENT COMPANY, LLC.
Key specifications
- SKU
- SH-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 Steel Haul 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.
Product Overview
Generac RTSN400J3 400A 3Ø-120/240V NEMA 3R Automatic Transfer Switch is a transfer switch for standby generator electrical transfer applications. Use the specifications, attributes, documents, and product images on this page to confirm fitment, capacity, electrical requirements, dimensions, and compatibility before ordering.
Key Features
- Application: Standby generator electrical transfer applications.
- Transfer Switch Detail: NEMA 3R, open transition.
- Voltage: 120/240V.
- Phase: 3ø.
- Enclosure: NEMA 3R.
- Electrical rating: 400A.
Technical Specifications
| Brand | Generac |
|---|---|
| Model | RTSN400J3 |
| MPN | RTSN400J3 |
| SKU | SH-AP-RTSN400J3 |
| Category | Generac, Transfer Switches |
| Application | Standby generator electrical transfer applications |
| GTIN / UPC | 00696471114430 |
| Voltage | 120/240V |
| Phase | 3ø |
| Enclosure | NEMA 3R |
| Electrical rating | 400A |
| Voltage / Phase | 3ø, 120/240V |
| Transfer Switch Detail | NEMA 3R, open transition |
| Enclosure | NEMA/UL Type 3R |
| Transition type | open transition |
| Transfer Switch Included | Standalone transfer switch |
Product Documents
| Document Type | File Name | PDF URL |
|---|---|---|
| Specification Sheet | rtsn400g3-specifications-sheet-specification-sheet.pdf | View PDF |
| Technical Manual | rtsn400g3-technical-manual.pdf | View PDF |
| 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 |
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 Steel Haul Equipment with the product SKU for shipping support.
Generac RTSN400J3 400A 3Ø-120/240V NEMA 3R Automatic Transfer Switch - SKU SH-AP-RTSN400J3 includes free shipping. Orders are usually delivered within 7–14 business days after order confirmation.
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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.




