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Emerson Network Power > United States > Products > Power Switching and Controls > Power Transfer Switches > ASCO 7000 Series Medium Voltage Transfer Switch
ASCO protects medium voltage loads by offering maintainable and highly proven power transfer switches. The switches can be configured with protective relays and other options to meet specific project requirements.

Switching at medium voltage is often preferred when most loads in a facility require protection, or when protected power is needed at distances. By placing the switch near the source, often outside, and often with service entrance, many costly installation complications can be avoided.

Configurations

Base Model Features

977
974
973
Breaker Ampacity
1200A
2000A
1200A
2000A
600A
Number of Sections
2
3
2
3
1
NEMA 1 Foorprint (inches)
72Wx91D
108Wx91D
72Wx91D
108Wx91D
36Wx72D
UL 1008A
Yes
No
Yes
No
No
ANSI C37.20.2
Yes
Yes
Yes
Yes
No
Seismic Certification
Yes
Yes
Yes
Yes
No
Insulation Level (BIL)
95kV
95kV
60kV
60kV
60kV
Insulated Bus
Yes
Yes
Yes
Yes
Yes
Cable Barriers
Yes
Yes
Yes
Yes
No
11 GA Steel
Yes
Yes
Yes
Yes
Yes
Drawout Breakers
Yes
Yes
Yes
Yes
No
Distribution Available
Yes
Yes
Yes
Yes
No
Protective Relays Available
Yes
Yes
Yes
Yes
Yes
NEMA 3R available
Yes
Yes
Yes
Yes
Yes
NEMA 4R available
No
No
No
No
Yes
  • Touch-pad programming, without the need for meters or variable power supplies
  • Sixteen selectable rating voltages
  • On-board diagnostic control panel and ATS status information for analyzing system performance
  • Active timing function display and countdowns
  • Password protection to prevent unauthorized tampering of settings
  • Remote monitoring and control with ASCO PowerQuest®
  • Historical event log
  • Statistical ATS systems monitoring information
Features
ASCO Medium Voltage Transfer Switches Accessories
85L Power Manager w/ Display on Load
85N Power Manager w/ Display on Normal
85M Power Manager w/ Display on Emergency
109N Basler BE1-50/51 on Normal
109E Basler BE1-50/51 on Emergency
109AE SR489 on Emergency
138B TOC Breaker Truck Operated Contact Switch
108SL SEL351S on Load
108SN SEL351S On Normal
108SE SEL351S on Emergency
118FL SR350 on Load
118FN SR350 on Normal
118FE SR350 on Emergency
136A 3" Infrared Viewports
73ND Lightning Arrestor Distribution GE Tranquell
73NT Lightning Arrestor Intermediate GE Tranquell
73NU Lightning Arrestor Utility GE Tranquell
137A Mimic Bus On Front
138A Service Entrance
Labeled Switch
139A Special Breaker
Section Orientation
Call Special Distribution
Section Required
Options
Brochures and Data Sheets
 
Warranties

Technical Specifications
Product Downloads