Search for Products
If you know the product brand name or part number, type it in the box below.

Core Offerings

500, 400, 300 Series

Protecting a facility with this parallel line of products is an excellent first line of defense in limiting high impulse transients. (Formerly ASCO, Liebert and PowerSure brand products).


Protecting all susceptible low-voltage routes like cable, telephone/data lines from surges, spikes and transients.


Active Tracking Filters™ provide clean AC power by eliminating lower-voltage noise and are ideally installed at specific branch panels or on individual pieces of equipment.

Product Categories


Featured Product

400 Series 
Introducing an expanded product offering to the 400 Series, (the 460, 440, 430, 425, 420), ideally suited for a facilities’ branch panels and outdoor equipment. Learn More
Video Overview


Tools and Resources

Case Studies
Installation Manuals
White Papers

Why Active Tracking Filters?
Using Active Tracking Filters to control low- and high-voltage transients.

Why Surge Protection?
Using surge protective devices to control high-voltage transients and surges.

Click Here to search and download all associated product literature or visit the individual product pages for downloads. Click Here to order a product catalog.

Discontinued Products
Support information for surge protection products no longer in production.

Connect With Us
Where to Purchase
Locate an Emerson Network Power office near you for sales inquiries.

Technical Support
Do you have product or warranty questions? We're here to help! Call and speak to one of our experienced application engineers.

Social Media


News Room
Surge Protection
Technology is constantly changing and so are we! Keep updated with surge protection product releases and PR announcements.


Read the latest news, (below), about what's happening around the world at Emerson Network Power.

Our interactive applications guide will show you.
Panelmount, (facility-wide) surge protection products.
Surge Protection for
surveillance systems.
Our state-of-the art test lab will 'blow' your mind.
Surgeo, (our surge and destroy guru), demonstrates the damaging effects of over voltage on everyday appliances.
Leading the way with innovative surge protection solutions.