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Core Offerings


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Power Transfer Switches
Reliably transfer loads to emergency sources with automatic transfer switches and non-automatic transfer switches.
Specialty Transfer Switches
Automatic transfer switches that support multiple load sources or transfer switches in a single lineup.
Power Control Systems
Easy-to-operate paralleling switchgear solutions and remote monitoring systems.
Power Monitoring and Controls
Local and web-based networks are supported for access from on-site or anywhere in the world.
Industrial Controls
Lighting control and specialty products, remote control switches, gas panels and surge suppressors.
Fire Pump Controllers
Firetrol control products for fire supression and life safety systems.
Maintenance, repair, solutions and upgrades for your power switching and control products.



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Request Additional Information
Submit a request for more information on our emergency power products.
Warranty Information
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Discontinued Products
Support information for ASCO automatic transfer switches and emergency power control products that are no longer in production.



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News Releases
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Featured Product
ASCO PowerQuest Monitoring and Control
The PowerQuest® family is the most comprehensive communication, monitoring and control solution ever offered by Emerson Network Power.
It empowers you. It fulfills your need to test, manage loads, optimize the bus bar, remotely monitor and otherwise be aware of the status of your facility's utility source and on-site power. Learn More


Product Demo
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Existing Inventory and Quick Ship Program
Existing Inventory and Quick Ship Program

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Existing Inventory and Quick Ship Program
World-Class Technology
World-Class Technology

A message from the president of ASCO.
World-Class Technology
ASCO Services
ASCO Services

Emergency power solutions and services.
ASCO Services

View our range of controls for fire suppression systems.
ASCO Power University
ASCO Power University

E-learning portal for power professionals.
ASCO Power University