Products
Cables and Accessories
SEL cables and accessories enable high-speed, reliable communications between devices and networks in a wide range of applications, from substation automation to industrial networking.View all cables
Fiber-Optic Cables
SEL fiber-optic cables provide long-distance communications with immunity to electromagnetic interference.
Serial, Coaxial, Ethernet, and USB Cables
SEL cables enable reliable communications between devices using standard communications interfaces, including serial, coaxial, Ethernet, and USB.
Single-Mode Fiber-Optic Transceivers
SEL single-mode transceivers convert EIA-232 serial ports to single-mode fiber-optic ports.
Multimode Fiber-Optic Transceivers
SEL multimode fiber-optic transceivers convert EIA-232 or EIA-485 serial ports to multimode fiber-optic ports.
Converters
SEL converters enable conversion between various communications media types and communications interfaces.
Power Supplies and Modules
SEL power supplies and modules provide reliable power for critical devices in demanding environments.
Auxiliary Devices
SEL auxiliary accessories support reliable connections and system integration for SEL devices.
Testing Tools
SEL testing tools support the commissioning, maintenance, and troubleshooting of power system equipment and protective devices.