GENERAC RTSC400A3 RTSC400A3 - ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$3,475.09
GENERAC RTSC400A3 RTSC400A3 - Smart Switch 400 Amp 120/240 1Ø NEMA 3R

GENERAC RTSC400A3 RTSC400A3 - Smart Switch 400 Amp 120/240 1Ø NEMA 3R

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Model: RTSC400A3
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$3,475.09
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RTSC400A3 - Smart Switch 400 Amp 120/240 1Ø NEMA 3R

  • Certifications and Standards

    • UL Listed

  • Features

    • Five year limited warranty
    • Digital Power Technology (DPM) allows these switches to have the capability to manage up to 4 individual HVAC (24 VAC controlled) loads with no additional hardware
    • Designed for use with single-phase generators 60-kw and below
    • Single-phase, 120/240-volt; cUL listed
    • When used in tandem with Smart Management Modules, up to 8 loads can be managed as well, providing the most installation efficient power management options available
    • The Heavy Duty Generac Contactor is a cUL recognized device, designed for years of service
    • Smart Switch 400 Amp 120/240 1Ø
    • Generac Automatic Transfer Switches are housed in an aluminum NEMA/UL Type 3R enclosure, with electrostatically applied and baked powder paint

Manufacturer Resources

Product Specs

Amperage:
400 A
Assembled Weight:
130 lbs
Color Finish:
Grey
Country Of Origin:
United States
Installation Hardware Included:
transfer switch
Installation Instructions Included:
Yes
Manufacturer Warranty:
5 year limited
Maximum Generator Input:
48000 W
Overall Depth:
17 in
Overall Height:
52 in
Overall Width:
25 in
Restrictions:
No
Department:
Electrical
Product Group:
Power Distribution
Product Subgroup:
Transfer Switch
Product Voltage:
120 V
Product Material:
Aluminum
Product Weight:
130 lbs

Generac RTSC400A3 – Frequently Asked Questions

1) Will the Generac RTSC400A3 transfer switch work with a three-phase generator?
No. The RTSC400A3 is a single-phase 120/240-volt switch, built for single-phase generators rated 60 kW and below. A three-phase standby set needs a three-phase transfer switch instead. If your service is 120/240 single-phase at 400 amps, this is the right configuration.
2) Can the RTSC400A3 be mounted outdoors next to the generator?
Yes. The enclosure is aluminum, NEMA/UL Type 3R rated with electrostatically applied and baked powder paint, so it is suited to outdoor wall mounting. The aluminum housing also resists corrosion better than painted steel in coastal or damp locations.
3) What size generator can I connect to a Generac RTSC400A3 smart switch?
Maximum generator input is 48,000 watts (48 kW), and the switch is designed for single-phase generators 60 kW and below. Size your standby set at or under 48 kW on the input side.
4) Do I need extra hardware to shed air conditioning loads with a Generac smart switch?
No added hardware for the first four. Digital Power Technology built into the RTSC400A3 manages up to 4 individual HVAC loads controlled at 24 VAC directly from the switch. Add Generac Smart Management Modules and the count goes up to 8 managed loads.
5) How much wall space and clearance do I need for the RTSC400A3 enclosure?
The cabinet measures 52 inches high, 25 inches wide, and 17 inches deep, and it weighs 130 pounds. At that weight plan on two people and structural backing, plus working clearance in front per your local electrical code.
6) Is the Generac RTSC400A3 UL listed for permanent standby installations?
It is UL Listed and cUL listed for 120/240-volt single-phase service, so it can be used on both sides of the border. The internal Generac heavy duty contactor is a cUL recognized device.
7) Does the RTSC400A3 ship with installation instructions, or do I have to download them?
Installation instructions come in the box, and the transfer switch itself is the hardware supplied. Conduit, wire, lugs beyond what is factory fitted, and any Smart Management Modules for load shedding are separate.
How fast can I get the Generac RTSC400A3 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Generac RTSC400A3 come with a warranty?
Absolutely. The Generac RTSC400A3 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Generac RTSC400A3?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the Generac RTSC400A3 from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support, and rewards on every order. Our team is always ready to help you choose the right product for your project.
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