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GENERAC Automatic Transfer Switch: Single Phase, 400 A Current Rating - Automatic Transfer Switches
GENERACAutomatic Transfer Switches

GENERAC Automatic Transfer Switch: Single Phase, 400 A Current Rating

The GENERAC Automatic Transfer Switch is a single-phase, 400 A service-rated transfer switch (MPN RTSW400A3) from the RTS series. It features an aluminum enclosure and is rated for 120/240V AC operation. This switch…

SKU 3G-OTH-371151

Brand
GENERAC
Item
Automatic Transfer Switch: Single Phase, 400 A Current Rating
Category
Automatic Transfer Switches
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Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
Payment
Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Technical Specifications

GENERAC
Manufacturer Part Number
RTSW400A3
Type
Service Rated Transfer Switch
Lockable
No
Rated Voltage
120/240V AC
Current Rating
400 A
Enclosure Material
Aluminum
Compatible with Series
RTS
Service Rated Transfer Switch
Yes

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GENERAC Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The GENERAC Automatic Transfer Switch is a single-phase, 400 A service-rated transfer switch (MPN RTSW400A3) from the RTS series. It features an aluminum enclosure and is rated for 120/240V AC operation. This switch is designed for automatic power transfer in standby generator applications.

Frequently Asked Questions

What is the GENERAC RTSW400A3 automatic transfer switch used for?

The GENERAC RTSW400A3 is a 400 A service-rated transfer switch for single-phase standby generator systems. It automatically transfers power from utility to generator during an outage, ensuring continuous operation for critical loads in commercial or industrial facilities.

What are the specifications of the GENERAC RTSW400A3 transfer switch?

The GENERAC RTSW400A3 is a single-phase, 400 A service-rated transfer switch rated for 120/240V AC. It features an aluminum enclosure, is part of the RTS series, and is not lockable. It is designed for automatic power transfer in generator applications.

Where to buy the GENERAC RTSW400A3 transfer switch worldwide?

3G Electric supplies the GENERAC RTSW400A3 transfer switch worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your site. Contact us for a quote and lead time on this service-rated transfer switch.

How to install a GENERAC RTSW400A3 automatic transfer switch?

Installation of the GENERAC RTSW400A3 must be performed by a licensed electrician following local codes and the manufacturer's manual. The switch connects between the utility meter and main panel. Ensure the generator is properly sized and the 120/240V AC supply is disconnected before work.

Used in

Common applications for GENERAC
Backup power for commercial buildings — Generac automatic transfer switches (e.g., RTSN600G3) for seamless grid-to-generator transition
Portable power for construction sites — Generac conventional gasoline generator (MPN 7680) for temporary electrical supply
Cold-climate generator operation — Generac extreme cold weather kit (MPN 5618) for engine block heating in low temperatures
Generator battery maintenance in winter — Generac battery warmer (MPN 5633) to ensure reliable starting in cold environments
Generator connection to transfer switch — Generac power cord (MPN 6330) for linking portable generator to inlet box and transfer switch
Cosmetic maintenance of standby generators — Generac touch-up paint kit (MPN 5703) for air-cooled series generator enclosures

GENERAC Products

3G Electric supplies GENERAC automatic transfer switches. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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SCHNEIDER Soft Start: 208-690V AC, 100 mA Output Current, With Bypass, IP00, 60/50 Hz, Three Phase (MPN ATS480C79Y)
SCHNEIDER Soft Start: 208-690V AC, 100 mA Output Current, With Bypass, IP20, 60/50 Hz, Three Phase (MPN ATS480D38Y)
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