Temperature monitoring relay TR1-18

2 NO/NCAC/DC

TR1-18 - Motor winding temperature monitoring Description This unit monitors the temperature of a motor using the PTC sensor (positive temperature coeffi cient resistor) or thermostat (TK) switch built in to the motor winding. Relay contacts can be used to disconnect the supply to the motor if it overheats. LEDs indicate mains on and fault status. Switches on the front panel select sensor type and latching (memory) on/off . In latching mode, the unit must be reset after a trip by means of the front panel Reset button or an external switch. These instructions contain important safety information. Please read them thoroughly before commissioning, operating or maintenance of the unit. Technical parameters Supply voltage: 24-240V AC (50-60Hz) or DC Supply voltage tolerance: -15/+10% Sensor failure indication: Red LED fl ashes Relay contacts: 2 x changeover, volt-free for general switching operations Dimensions: 90 x 17.6 x 64 mm Weight: 83 g Over-voltage category: III Pollution degree: 2 Environmental protection: IP40 for front panel, IP20 for terminals.