ASCO Automatic Transfer Switches


ASCO Transfer Switches make backup power possible. They enhance power availability by transferring electrical loads to alternate sources of power. From simple backup solutions to mission-critical facilities, transfer switches connect backup power to enhance safety and sustain operations.

PRIMA Power Systems provides a wide range of ASCO Transfer switches available in automatic and non-automatic configurations. ASCO Transfer Switches are applicable in many environments, ranging from residential, agricultural, and commercial applications to the critical power needs of healthcare, financial, and data center facilities.

Get the advantage of having an emergency power system equipped by best-in-class technology with ASCO transfer switches.

ASCO 300 Series Transfer Switches are available in single sided and non-bypass islation configuations. This transfer switch is available in single sided bypass in 200, 400, 600, 800, and 1200 amp arrangements. The non-bypass transfer switches range in ampacity from 30 to 3,000.

ASCO 7000 Series Transfer Switches are available in bypass-isolation configurations to allow testing of the switch without interrupting power to the load.

asco automatic transfer switches


ASCO Auto Transfer Switch Components


Standard designs for commercial and light
industrial facilities that are simple to procure,
install and commission.


Custom engineered for healthcare, data center, and mission critical facilities. They are the industry
leading technology for the widest
range of applications.

  • Outpatient Healthcare Facilities
  • Small & Midsize Businesses
  • Light Industrial Applications
  • Integrated & StandAlone Quick Connects
  • Residential
  • Agriculture
300 series Transfer Switches
  • Hospitals
  • Data Centers
  • Mission Critical Facilities
Product Range
Voltages 115-600 V 115-600 V,
5-15 kV
Ampacities 30-3000 A 30-4000 A
Poles 2, 3 or 4 2, 3 or 4
Withstand & Closing Ratings 22-200 kA 10-200 kA
Time-Based Ratings 36-65 kA 36-65 kA
Standard Transfer switch X X
Bypass-Isolation Transfer Switch X
Service Entrance Transfer Switch X X
Custom Engineered Transfer Switch X
Range of Accessories XXX XXXXX
Transition Modes
Open Transition X X
Delayed Transition X X
Closed Transition X
Soft-Load Transition X
Neutral Configurations
Solid Neutral X X
Switched Neutral X X
Soft-Load Neutral X
Quick Connects
Integrated Panel X
Stand-Alone Panel X
300 series Transfer Switches


Our technical sales experts are available to provide you with a quote for your custom power generation package. We will respond as quickly as we can, typically within 24 hours.