ASCO Transfer Switch ASCO800A300SE Details and Specifications
800 Amp ASCO Transfer Switch Series 300
800-Amp ATS ASCO 300 Series 208 - 240 - 480 Volts 3-Phase Service Rated NEMA 3R
With Group G Controller
The ASCO Series 300 Automatic Transfer Switch has the most compact design of all generator transfer switches in the industry. This 800-Amp transfer switch restores critical loads after a loss of power from the main source. A Group G controller provides dependable operation in any environment with a user-friendly interface. Intuitive symbols make operation easy while LED indicators display transfer switch status. Adjust operating parameters and feature settings without opening the door.
Rugged construction and proven performance for years of reliability. Handles extraordinary demands when switching stalled motors or high inrush loads.
Series 300 Group G Controller
- See image in gallery
- Touch pad programming
- 128x64 graphical display
- Intuitive symbols for easy operation
- LED indicators display transfer switch status
- Active timer display
- On-board diagnostics
- Password protection
- Voltage & frequency sensing
- Status & control functions
- Predictive outage feature
ASCO 800-Amp Series 300 Non-SE Transfer Switch
The 800-Amp transfer switch is completely front accessible. Access the Group G controller from the front of the switch without opening the door to change settings and access features.
- UL 1008 Listed
- Interlocked single solenoid design prevents simultaneous source connections
- Won't transfer to a dead source
- Available in 208, 240, 480 Volts 3 Phase
See the ASCO brochure for more features.
Briggs & Stratton 3-Year Limited Warranty

