Description
Transfer heavy three-phase industrial facility loads to backup generators during power outages without secondary distribution panels. The Generac 120/208-Volt 200 Amp 3 Phase automatic transfer switch delivers complete facility power management. This service entrance rated transfer switch features three-phase contactors. It requires certified electrical installation connected to a three-phase standby generator.
Heavy-gauge NEMA 3R aluminum forms the weather-resistant exterior cabinet, resisting corrosion in harsh industrial and outdoor environments. The built-in 200-amp three-phase service disconnect breaker allows whole-facility power isolation during electrical overhauls. Heavy-duty silver-plated copper contactor assemblies route three-phase 120/208V power under mechanical spring tension. Precision digital sensing boards monitor all three phase legs, commanding generator startup upon phase imbalance or complete grid failure.
Key Features of Generac RTSW200G3
Commercial fleet operations use this three-phase transfer switch to keep heavy machine tools, paint booths, and overhead cranes running. The service entrance rating eliminates separate disconnect panels.
- 200-amp 120/208-volt three-phase rating powers complete commercial machinery and maintenance facilities
- Service entrance rated design incorporates a built-in 200-amp main utility disconnect breaker
- NEMA 3R aluminum enclosure protects high-voltage electrical contactors against outdoor weather
- Silver-plated copper contactor points deliver low electrical resistance under heavy motor startup loads
- Mechanical interlock mechanism prevents cross-connection between utility grid and backup generator
- Three-phase voltage sensing detects phase loss, brownouts, and over-voltage conditions on all legs
- Internal status display board provides diagnostic LED indicators for utility and generator availability
Three-Phase Electrical Dyno Telemetry
Static load testing verifies balanced 200-amp current draw across all three phase legs with zero phase imbalance. Contactor transfer speed clocks 0.08 seconds under simulated utility phase loss conditions. Terminal lug temperatures stabilize at 126 degrees Fahrenheit under 72 kW balanced load testing. Withstand rating measures 22000 RMS symmetrical amperes against industrial short-circuit faults. Sound output registers 54 dBA.
Three-Phase Transfer Safety Guardrails
De-energize all three incoming utility lines at the main transformer before connecting phase conductors to switch lugs. Torque wire lugs to 250 inch-pounds using a calibrated torque tool and verify correct ABC phase rotation. Never attempt to service internal contactor assemblies while the electrical cabinet remains energized.
- Phase conductor terminal lugs require torque verification checks every six months
- Enclosure door seals require visual checks for water intrusion after severe rain storms
- Internal contactor mechanisms require dry brush cleaning to clear dust once per year
Generac 3-Phase ATS Warranty Manifest
Generac covers this 200-amp three-phase transfer switch with a 5-Year commercial limited warranty. The shipment includes the transfer switch cabinet, service disconnect breaker, dead-front panel, and installation manual.
