voltage control relay / current / temperature / digital
SEL-849 Schweitzer Engineering Laboratories



  • Measured/monitored value:

    voltage, current, temperature

  • Other characteristics:

    digital, DIN rail, for motors


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.