Relay for motor temperature monitoring. 12 A, supply voltage 230 V AC. Monitoring relays with fault latch and self-reset (with delayed connection/disconnection of contact R).
Temperature monitoring of the motor winding with fault latch with self-reset. When the total resistance of the PTC circuit exceeds 3,6 kΩ (temperature increases), the operational relay R will be disconnected. The operational relay R will be switched back on when the total resistance of the sensors falls below 1,65 kΩ (the system is cooled).
Output circuit - contact data: |
|
Number and type of contacts |
1 CO |
Contact material |
AgSnO2 |
Max. switching voltage |
300 V |
Input circuit: |
|
Supply voltage AC |
230 V |
Rated power consumption |
0,6 W |
Range of supply frequency |
48...63 Hz |
Measuring circuit: |
|
Measuring terminals |
T1, T2 |
Measured value |
resistance |
Input resistance |
≤ 4 kΩ |
Measuring voltage |
≤ 7,5 V |
Insulation: |
|
Rated surage voltage |
4 000 V AC |
Insulation rated voltage |
250 V AC |
Overvoltage category |
III acc. to EN 60664-1 |
General data: |
|
Mechanical life (cycles) |
> 3 x 107 |
Ambient temperature - operating |
-20...+60 oC |