Resistance relay CR-810 DUO

Resistance relay CR-810 DUO

CR-810 DUO

To co-operation with the PTC thermistor-equipped temperature sensors.
The resistance relay protects electrical equipment against any undesirable temperature increases by means of PTC resistors in serial connection (1-6 pieces).


Proper operation (closed contacts 11-12) is indicated by the green LED U (proper supply voltage, correct temperature of a controlled device, effective circuit of connected PTC sensors). Temperature rise of at least one of the sensors over the rated value increases its resistance above 3000 ╬ę. The relay is activated (opening of contacts 11-12 and turning on the red LED). System will be activated automatically if the resistance of the PTC sensor loop falls below 1800 ╬ę (lowering of the controlled device temperature). The contact of the executive relay will also be opened when the loop resistance will decrease to 70 ╬ę, for example at short circuit of PTC sensor wires (indicated by red LED), or the power supply voltage of the relay will switch off..

Power supply voltage230 V AC / 24 V AC/DC
The executive elementrelay
Maximum load current16 A
Contact configuration1 ├Ś NO/NC
Separation of the contactYES
terminalscrew terminals 2,5 mm┬▓
Tightening torque0,4 Nm
Power consumption0,8 W
Working temperature-25 ├Ě 50 ┬░C
dimensions1 module (18 mm)
Assemblyon rail 35 mm
Level of securityIP20

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