Network and Serial Communications
Build your network with highly reliable SEL components and cables. Our Ethernet and serial components and cables operate reliably in harsh environments, withstanding temperature extremes, electrical transients, electrostatic discharges, vibration, and more.
- Ethernet Multiplexers, Routers, and Converters

Connect the components of your network with highly reliable SEL components and cables. Convert from copper to fiber-optic Ethernet links to improve safety and data integrity in applications near electrical lines or equipment.
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- Serial Copper Converters

SEL provides reliable finished (terminated) cables, built to IPC workmanship standards in our ISO 9001 certified plants and they are covered by our 10-year worldwide warranty. A variety of standard and customized twisted pair and coaxial cables and connector combinations are available from SEL.
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- Serial Fiber Converters

Use optical fiber to improve safety and security of teleprotection applications.
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- Security Gateways

SEL solutions solve demanding security applications to protect critical infrastructure operations. Executives, engineers, and technicians alike find SEL cybersecurity solutions to be an effective means to protect control system communications.
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- Cables

SEL provides reliable finished (terminated) cables, built to IPC workmanship standards in our ISO 9001 certified plants --- And, they are covered by our 10-year worldwide warranty. A variety of standard and customized twisted pair, coaxial, and fiber-optic cables and connector combinations are available from SEL.
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