Motor protective relay to prevent thermal overload, PTC thermistor-controlled
Snap-on mounting on DIN rail
Version without error memory: The relay is permanently picked up. As soon as a PTC thermistor resistance of ≥3 kOhm is reached, the relay drops out immediately. If the resistance rises to ≤1.8 kOhm again, it picks up again.
Version with error memory: The relay is permanently picked up. As soon as a PTC thermistor resistance of ≥3 kOhm is reached, the relay drops out immediately. To continue operation, the resistance has to have fallen to ≤2.8 kOhm and the built-in reset button also has to be pressed. Remote reset possible via terminals B1-B2