Description
Generac RTSN400G3 Guardian 400-Amp Automatic Transfer Switch Overview
The Generac RTSN400G3 Guardian is a 400-amp, three-phase automatic transfer switch for 120/208V systems. It is intended for larger applications and works only with Generac 120/208V three-phase generators. The switch operates fully automatically and includes an owner’s manual. The switch is described as a 400-amp unit for larger applications, with maximum generator and utility input of 400 amps.
Key Features
- Fully automatic operation that moves the load between utility and generator power
- Three-phase design with 3 poles, rated for 60 Hz
- NEMA 3R aluminum enclosure
- Standard installation, though a sub-panel or disconnect may be needed for serviceability
- UL listed
- Larger-application design
- Two-year factory warranty
Who It’s For
Owners of a Generac 120/208V three-phase generator who need a 400-amp automatic transfer switch for a larger site. Installers should allow for a sub-panel or disconnect where serviceability requires it.
Specifications
| Model | RTSN400G3 |
| Brand | Generac |
| Voltage | 120/208 Three-Phase |
| Frequency | 60 Hertz |
| Rated Amps | 400 Amps |
| ATS Poles | 3 Poles |
| Max Generator Input | 400 Amps |
| Max Utility Input | 400 Amps |
| Enclosure | NEMA 3R |
| UL Listed | Yes |
| Weight (lbs.) | 107 (48.54 kgs.) |
| Dimensions (LxWxH)(in.) | 36 x 24 x 10 (91.44 x 60.96 x 25.40 cm) |
Buying advice: read our guide to automatic vs manual transfer switches, or browse all automatic transfer switches.
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