SCHWEITZER ENGINEERING SEL-551 DUAL RELAY

MICROPROCESSOR-BASED RELAY WITH 5 A/1 A INPUTS, 24–250 V DC OR 85–264 V AC POWER, AND 4-SHOT RECLOSING CAPABILITY. PROVIDES PHASE, GROUND, AND NEGATIVE-SEQUENCE PROTECTION WITH ADAPTIVE CT SATURATION DETECTION, 6 INPUTS, 3 OUTPUTS, AND 8 LATCH SWITCHES (SEL-551C). STORES 20 EVENT RECORDS, OPERATES –40 °C TO +85 °C, AND SUPPORTS ASCII, LMD, AND MODBUS RTU COMMUNICATION.