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Feeder Protection Products

Feeder products protect the distribution systems for utility, industrial, and commercial power systems world wide. The versatile and easy to use protection these products offer make them ideal for other applications such as overcurrent backup protection, automation, and control of advanced protection schemes.

SEL-351/SEL-351A Protection System

The SEL-351 Protection System has built-in Ethernet and IEEE C37.118 synchrophasors, and is ideal for directional overcurrent applications. Optional MIRRORED BITS® communications and power quality monitoring add flexibility to solutions. The SEL-351 is the protection standard for utility and industrial electrical systems around the world.

SEL-451 Protection, Automation, and Bay Control System

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The new SEL-451 is a complete stand-alone protection, automation, and control system. The SEL-451 has speed, power, and flexibility to combine complete substation bay control with high-speed breaker protection in one economical system.

SEL-751/SEL-751A Feeder Protection Relay

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The SEL-751 Feeder Protection Relay is ideal for directional overcurrent, fault location, arc-flash detection, and high-impedance fault detection applications. Flexible I/O options, easy mounting, and fast settings make the SEL-751 the right solution for industrial and utility feeder protection.

SEL551/SEL-551C Overcurrent/Reclosing Relay

The SEL-551C Relay provides overcurrent relay users with new flexibility in distribution system protection. The SEL-551C provides six inputs and three outputs, with up to two communications ports, for more control options. The SELOGIC®control equations have added rising and falling edge triggers and latches for custom logic applications.

Generator Protection Products

SEL has set the standard in generator protection. Apply SEL generator protection products and avoid expensive equipment damage and failure while maintaining system performance and increasing availability.

SEL-700G Generator Protection Relay

The SEL-700G Relay is the right solution for utility and industrial generator protection, with an autosynchronizer, flexible I/O, and advanced communications. Apply the SEL-700G Relay for comprehensive primary and backup generator protection.

SEL-300G Generator Relay

In order to make technology available for the first time that complies with IEEE turbine protection standards, SEL has applied its expertise in the production of microprocessor-based relays to create the SEL-300G, a generator relay that includes several unique features designed for unsurpassed protection, monitoring, and control of electrical generators.

SEL-547 Distributed Generator Interconnection Relay

Apply the flexible SEL-547 at the transfer switch site (interconnection point between the utility and the customer) and at each individual generator site. When the SEL-547 at the transfer switch site detects utility supply problems, it separates the customer system from the utility supply.

SEL-2664 Field Ground Module

Add the SEL-2664 Field Ground Module to the SEL-300G Generator Relay to protect all the critical components in your generator with one comprehensive relay.