Siemens 3UG4501-1AA30 Monitoring RelayAnalog monitoring relay level monitoring resistance monitoring from 2 to 200 kohm overshoot and undershoot supply voltage 24 V AC DC 50 to 60 Hz DC and AC without electrical isolation to measuring circuit 2 step or 1 step control tripping delay 0. 5 to 10 s 1 changeover contact screw terminal
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