EXW Singapore — collect or forward from our Singapore office.

3G Electric
GENERAC RTSC400A3 Automatic Transfer Switch, 400A, 120/240V AC, Aluminum NEMA 3R - Automatic Transfer Switches
GENERACAutomatic Transfer Switches

GENERAC RTSC400A3 Automatic Transfer Switch, 400A, 120/240V AC, Aluminum NEMA 3R

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
RTSC400A3 Automatic Transfer Switch, 400A, 120/240V AC, Aluminum NEMA 3R
Part Number
RTSC400A3
Category
Automatic Transfer Switches
Available to Order
Also known as:RTSC400A3GENERAC
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineerMessage via Telegram
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
EXW Singapore
Collect or forward from our office
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Local availability & support

Payment
Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

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

Technical Documents

No technical documents available for this product.
Request documentation →
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

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
Commercial facilities — Generac three-phase diesel generators (e.g., RD05033JDAE) for standby power during outages.
Industrial plants — Generac 277/480V generators (e.g., RD05033KDAE) for critical process backup.
Residential homes — Generac single-phase 120/240V generators (e.g., RD02025ADAE) for automatic standby power.
Data centers — Generac diesel generators with transfer switches for redundant power supply.
Healthcare facilities — Generac CARB-compliant generators (e.g., RA03022ADAE) for emergency power.
Telecommunications — Generac standby generators for remote site power backup.
Not sure this is the right part? Photo-identify it→

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.

You might also need

Burners & Combustion →Pumps & Compressors →Spare Parts →All Products →

Compatible alternatives & equivalents

More from GENERAC

View all GENERAC parts →

Customer reviews

No reviews yet — be the first

Questions & answers

No questions yet — ask us the first