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GENERAC Smart Switch 400 Amp 120/240 1Ø NEMA 3R CUL: Single Phase, 400 A Current Rating - Automatic Transfer Switches
GENERACAutomatic Transfer Switches

GENERAC Smart Switch 400 Amp 120/240 1Ø NEMA 3R CUL: Single Phase, 400 A Current Rating

The GENERAC Smart Switch is a 400 Amp automatic transfer switch for single-phase 120/240V AC applications. This model (MPN RTSC400A3) features an aluminum NEMA 3R enclosure and is compatible with the RTS series. It…

SKU 3G-OTH-371162

Brand
GENERAC
Item
Smart Switch 400 Amp 120/240 1Ø NEMA 3R CUL: Single Phase, 400 A Current Rating
Category
Automatic Transfer Switches
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Technical Specifications

GENERAC
Manufacturer Part Number
RTSC400A3
AC
120/240V
Rated Voltage
120/240V AC
Current Rating
400 A
Enclosure Material
Aluminum
Compatible with Series
RTS
Service Rated Transfer Switch
No
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GENERAC Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The GENERAC Smart Switch is a 400 Amp automatic transfer switch for single-phase 120/240V AC applications. This model (MPN RTSC400A3) features an aluminum NEMA 3R enclosure and is compatible with the RTS series. It is not a service-rated transfer switch.

Frequently Asked Questions

What is the GENERAC Smart Switch 400 Amp used for?

The GENERAC Smart Switch 400 Amp automatic transfer switch automatically transfers power from utility to generator during an outage. It is designed for single-phase 120/240V AC residential or light commercial applications, ensuring seamless backup power for critical loads.

What are the specifications of the GENERAC RTSC400A3?

The GENERAC RTSC400A3 is a 400 A automatic transfer switch rated for 120/240V AC single-phase. It features an aluminum NEMA 3R enclosure for outdoor use, is compatible with the RTS series, and is not service-rated. The manufacturer part number is RTSC400A3.

Where to buy the GENERAC Smart Switch 400 Amp worldwide?

3G Electric supplies the GENERAC Smart Switch 400 Amp (RTSC400A3) to customers worldwide. We handle full logistics, customs clearance, and delivery to your site. Contact us for a quote and lead time on this automatic transfer switch.

How to install the GENERAC Smart Switch 400 Amp?

Installation of the GENERAC Smart Switch 400 Amp should be performed by a licensed electrician following local codes and the manufacturer's manual. Ensure proper conduit connections to the aluminum NEMA 3R enclosure and verify voltage compatibility (120/240V AC) before energizing.

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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