Panels and Enclosures

SEL designs, manufactures, tests, and delivers custom protection, automation, control, and metering panels; control cabinets; and retrofit doors. We simplify procurement and maximize value by designing and building panels and enclosures held to the same quality standards as our protective relays, satellite clocks, switches, meters, and hardened computers. This makes us uniquely suited to provide expert solutions for your custom panels and enclosures. From planning to installation, we work with you to provide a comprehensive result.SEL Engineering Services offers consulting, engineering design, field services, and in-house panel testing in our UL508A-certified panel factories. Every panel that arrives at your site has been verified as fully functional, which reduces overall project costs and engineering and commissioning time.SEL also provides convenient solutions for retrofit projects. We offer specially designed direct-replacement assemblies for electromechanical and legacy digital devices and replace them with our modern relays or meters. We ensure a seamless upgrade with minimal installation time and minimal changes to your system.

Contact UsWe’ll happily schedule a time for you to talk with our experts about how we can meet your needs.

Our Services

SEL Engineering Services offers complete design, construction, and installation services for your panels or enclosures, including:

Integrating protective devices, communications equipment, and automation solutions for your application, whether from SEL or a third party.
Determining the layout and location of all devices and an appropriate cabinet size.
Installing firmware and settings on SEL devices and third-party devices.
In-house manufacturing with secure supply chains and favorable lead times.

We supply many of our customers with standard designs that deliver consistency along with features and functions that satisfy a broad range of applications. Some options include:

Standard cabinet features for indoor and outdoor applications, including stainless steel, mild steel, aluminum, fiberglass, and polycarbonate enclosures.
Enclosures, racks, bezels, plates, portables, swing panels, and doors.
Assemblies that meet seismic, NEMA, and UL508A rating and certification requirements.

Each panel is crafted to suit your needs. We can design and build single or multiple units, making projects economical at any scale.View the Panels and Integrated Systems flyer

Easily replace legacy devices with SEL advanced relays by using precisely designed direct-replacement assemblies. Custom adapters and wiring conversion assemblies simplify integration of SEL equipment into your existing systems.We offer direct-replacement assemblies that streamline retrofit applications for motor, generator, transformer, and feeder protection as well as metering. Assemblies match the features, form factor, and terminal blocks of your legacy devices. We do not repurpose existing devices; we strengthen and modernize your system with new and advanced technology.We offer reliable protection, accurate measurements, and detailed data recording with our field-proven devices, which are backed by an industry-renowned warranty, no-cost diagnostic and repair services, and local technical support.View the SEL Direct-Replacement Assemblies flyer

Retrofit your existing panels by replacing obsolete protective devices with new digital devices. SEL engineers provide documentation, settings, and other necessary services to smoothly integrate solutions with new and legacy systems.SEL offers retrofit solutions for relay upgrade programs, electromechanical relays, analog and digital devices, communications infrastructure, and remote terminal units. Retrofit your system to:

Improve safety by reducing arc-flash incident energy; detecting high-impedance faults; and eliminating the hazard of running energized CT and PT conductors into the control house.
Reduce complexity by decreasing the device count; integrating devices easily; accessing more data with protocols; and implementing advanced automation and control systems.
Increase reliability by clearing faults with advanced protection elements; improving situational awareness; and locating faults within one tower span.
Enhance security by using software-defined networking (SDN); minimizing your attack surface; and managing remote assets securely.

SEL offers comprehensive support to help you simplify retrofit programs and integrate advanced protection, control, automation, and communications technologies into your existing infrastructure.View the Retrofit Solutions flyer

SEL Solutions in Action

Rayburn Electric Cooperative

Managing Growing Demand With Rayburn Electric CooperativeLearn more

LG&E and KU

Distribution Modernization in KentuckyLearn more

Caribbean Utilities Company, Ltd.

“Brain surgery” performed on live substationLearn more

Our Approach

Our panel manufacturing technicians take pride in high-quality cable management practices, with wires clearly labeled and neatly routed to ease installation and future maintenance or troubleshooting. In-house testing confirms interoperability before the completed panel ships to the field, which eliminates interface problems between separate devices. Designs indicate the exact location of the panel for field installation within a substation, and all SEL panels arrive precisely labeled.

We thoroughly test and validate panel connections, operations, and coordination in house—prior to shipping. This translates to less time spent onsite for commissioning and troubleshooting so you can get online sooner. Consolidating and upgrading devices to the best available technology eliminates excessive interwiring, making the installation faster and easier. Our approach simplifies the control architecture and improves reliability.SEL designs custom prewired retrofit plates and assemblies. We also make exact replicas of doors and provide precision fabrication to match existing conditions, including how to fit equipment into tight spaces. Our clearly labeled drill plans and templates make installation exact and efficient.

All of our products are designed, tested, and manufactured in SEL-owned and -operated facilities in the United States.The SEL ES team follows rigorous engineering procedures for design, development, testing, and commissioning of electric power systems. We continually identify, monitor, and improve best practices to ensure your satisfaction.We practice secure supply chain management, including verified chains of custody, responsible sourcing, and keeping quantities of critical parts in reserve. Our quality management system is certified to ISO 9001 requirements.

SEL ES approaches all projects with an unwavering commitment to safety.Employees working in the field receive comprehensive safety training that includes real-world scenario exercises, hands-on performance, and thorough review from qualified individuals.We also integrate human performance improvement tools into our everyday work practices and have a comprehensive event reporting and investigation process to bolster safety procedures and promote awareness among employees.Learn more about safety and procedures.

Our Support

When you choose SEL, you get more than products and services—you get a partnership. Our customer support teams are experts in power system products and applications, and they’re available for the entire life of your SEL solution.SEL ES project engineers are ready to assist you in various project stages, from planning through final commissioning of the system. Afterward, ES teams around the globe will assist with any ongoing needs, and you have access to no-cost product support from highly skilled SEL application engineers.More about SEL quality and support

Every device we manufacture comes with free lifetime technical support. SEL application engineers are stationed around the world and are ready to provide support and expertise for virtually all power system applications. No matter how often you need to call or how long your SEL products have been in service, our customer service and technical support professionals are ready to help.

Security Bulletins and Updates

We notify product owners of updates and security patches for the full life of the product. We distribute software and firmware updates directly to our customers via a secure file transfer. The authenticity and integrity of the updates are verifiable through digital signatures and cryptographic hashes.More about security notifications

SEL provides complete cybersecurity support for every solution, system, and product we create.

Cybersecurity Bulletins and Updates

We thoroughly review and test the code in our products, which gives us greater control over their quality, security, and functionality. Customers are notified of updates and security patches for the full life of every SEL product.

Cybersecurity Services and Support

From system assessment and baselining to cyber-defense solution development and ongoing system management, our full suite of security services can help strengthen your defenses and streamline the demands of maintenance and compliance.Cyber services support contracts include incident response, audits, system hardening, patch and update management, and more.

SEL meets your workforce training and continuing-education needs through seminars, conference and tradeshow presentations, and SEL University courses.SEL University courses and many of our seminars provide Professional Development Hours (PDHs) for maintaining Professional Engineering licenses. Courses and seminars can be delivered in various formats, including self-paced online learning, virtual classrooms, live and recorded webinars, and in person.We can also work with you to develop training that is customized to the specific needs of your workforce.Training and Education offeringsSEL University CoursesConferences and TradeshowsSeminars and Webinars