Reliable, Resilient Electric Power for Mission-Critical Facilities

Advanced power management and control solutions

Keep critical facilities and processes online, control costs, and ensure the safety of your personnel and the public with SEL power management and control system solutions.
SEL power management solutions are scalable and modularized, with advantages that include:
The industry's most trusted microprocessor-based electrical relays and intelligent devices—backed by a ten-year warranty and lifetime technical support.
View our warranty 
Fast, economical upgrades with SEL direct-replacement assemblies.
Learn more about direct-replacement assemblies 
Cybersecure software-defined networking (SDN) technology purpose-engineered for critical infrastructure applications.
Learn more about SDN 
Microgrid-style controls that integrate renewables and automatically optimize both stability and energy cost.
Learn more about microgrid solutions 
SEL has designed, tested, and manufactured products in the USA, in facilities that we own and operate, since 1984. We back our products and solutions with a ten-year warranty, no-charge technical support and repair services, and 24/7 emergency support.

Semiconductor Manufacturing

Power management and control systems engineered by SEL are trusted by semiconductor manufacturing facilities around the world.

These systems are vendor-agnostic, are interoperable with generation sources of any type, and can be customized for your application. They provide advanced generator control and load-shedding schemes that balance multiple power sources—including renewables—and keep critical processes online. They automatically optimize the balance between onsite and utility power sources. For facilities that are capable of separating from the utility grid, SEL microgrid controls ensure that separation and resynchronization are seamless.

And because SEL solutions are modularized and scalable, you can implement a system that meets an immediate need and easily expand it as budgets allow and future needs dictate.

Our industry-experienced engineers will work with you to understand your system—and deliver a customized solution that supports your operational goals.

Need another reason to consider an SEL solution?