Motor Protection

SEL understands how critical it is to provide continuous, reliable motor protection. That is why SEL offers industry-leading products with the most extensive warranty. SEL motor protection relays give customers a custom-fit motor protection system with easy installation for both retrofit and new applications.

Advantages of SEL Motor Protection

• SEL products lead the industry with the highest mean time between failures (MTBF)—over 1,500 years.*
• Ten-year warranty and best-in-class technical support.
• Easy application covering most protection functions. Low base prices with optional motor protection application add-in cards.

Industrial facilities with critical processes require a reliable supply of electric power and typically have two incoming sources. To ensure process continuity during a fault to the primary feeder, the SEL-700BT Motor Bus Transfer Relay quickly and safely transfers loads to an auxiliary feeder. This functionality keeps processes running without requiring a cold start, helps avoid costly shutdowns, provides personnel safety, and helps avoid environmental damage. A single SEL-700BT can protect and control a critical main-main load bus by selecting from two sources automatically, and two SEL-700BT relays (one on each side of the intertie) can transfer the load bus between sources in a main-tie-main configuration.