Arc flash monitoring relay SEL-849

phase sequencefor electric motorsDIN rail

Motor Management Relay The SEL-849 Relay offers current-, voltage-, and thermal-based motor protection; arc-flash detection; and power metering. It also provides all basic motor protection features, including protection for the following conditions: Short circuit Load loss Load jam Frequent starting Imbalanced current Phase reversal The SEL-849 installs easily inside a motor control center (MCC). The optional SEL-3421 and SEL-3422 Motor Relay HMIs (human-machine interfaces) install on the front of the MCC.