Monitoring Relays

Monitoring relays are a type of relay that trips a circuit breaker when a fault is detected. A relay is an electrically controlled switch that is used to turn the power on or off in a circuit. 




Monitoring relays are more sophisticated than regular relays, as they have adjustable operating conditions, whereas normal relays switch according to a fixed threshold. They measure a given parameter, such as voltage or temperature, and will trip a circuit breaker when the parameter gets too high or low. 




What are monitoring relays used for?


Monitoring relays have a wide range of uses, depending largely on the factor being monitored. For example, they can protect against overcurrent if measuring current, or they can detect an abnormally low frequency if frequency is being measured.




Types of monitoring relay


The main way in which monitoring relays differ is the function that they measure. This can be a number of things, including:



  • voltage

  • current

  • temperature

  • frequency


The factor that you need to measure will decide which monitoring relay you choose.


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Beskrivning Pris Monitoring Application Supply Voltage Contact Configuration Voltage Sensitivity Electrical Phase Voltage Sensing Range Current Sensitivity Minimum Current Sensed Maximum Current Sensed Phase Sensitivity Time Delay Temperature Sensitivity Temperature Sensing Range Frequency Sensing Range
RS-artikelnummer 775-8015
Tillv. art.nr1SVR730841R1400
VarumärkeABB
1 712,30 kr
Each
Enheter
Current 220 → 240 V ac DPDT - 1 - Overcurrent, Undercurrent 0.1 A, 3 mA, 10 mA 1 A, 30 mA, 100 mA - 0 s, 0.1 → 30 s - - 50 → 60 Hz
RS-artikelnummer 775-7958
Tillv. art.nr1SVR730830R0500
VarumärkeABB
2 186,91 kr
Each
Enheter
Voltage 24 → 240 V ac/dc DPDT Overvoltage, Undervoltage 1 3 → 30 V, 6 → 60 V, 30 → 300 V, 60 → 600 V - - - - 0 s, 0.1 → 30 s - - -
RS-artikelnummer 442-9405
Tillv. art.nr1SVR550801R9300
VarumärkeABB
479,26 kr
Each
Enheter
Temperature 220 → 240 V ac SPST - 1 - - - - - <100 ms Overtemperature, Undertemperature - -
RS-artikelnummer 775-7983
Tillv. art.nr1SVR730840R0500
VarumärkeABB
2 028,71 kr
Each
Enheter
Current 24 → 240 V ac/dc DPDT - 1 - Overcurrent, Undercurrent 0.3 A, 1 A, 3 A 1.5 A, 5 A, 15 A - 0 s, 0.1 → 30 s - - 50 → 60 Hz
RS-artikelnummer 876-4989
Tillv. art.nr1SVR740720R1400
VarumärkeABB
1 051,58 kr
Each
Enheter
Temperature 24 → 240 V ac/dc SPDT - - - - - - - <100 ms Overtemperature, Winding Temperature - -
RS-artikelnummer 775-8024
Tillv. art.nr1SVR740830R0400
VarumärkeABB
2 075,24 kr
Each
Enheter
Voltage 24 → 240 V ac/dc DPDT Overvoltage, Undervoltage 1 3 → 30 V, 6 → 60 V, 30 → 300 V, 60 → 600 V - - - - 0 s, 0.1 → 30 s - - -
RS-artikelnummer 876-5768
Tillv. art.nr1SVR730740R0300
VarumärkeABB
2 038,01 kr
Each
Enheter
Temperature 24 → 240 V ac/dc SPDT - 3 - - - - - 20 ms Overtemperature, Temperature Window Monitoring, Undertemperature 0 → +200°C 13.5 → 440 Hz
RS-artikelnummer 806-5932
Tillv. art.nr1SVR750669R9400
VarumärkeABB
2 875,55 kr
Each
Enheter
Insulation - - - - 0 → 1000 V dc, 0 → 690 V ac - - - - - - - -
RS-artikelnummer 876-5770
Tillv. art.nrCM-TCS.21S
VarumärkeABB
1 675,08 kr
Each
Enheter
Temperature 24 V ac/dc SPDT - 3 - - - - - 20 ms Overtemperature, Temperature Window Monitoring, Undertemperature -50 → +50°C 45 → 65 Hz
RS-artikelnummer 806-5957
Tillv. art.nr1SVR760669R9400
VarumärkeABB
2 987,23 kr
Each
Enheter
Insulation - - - - 0 → 1000 V dc, 0 → 690 V ac - - - - - - - -
RS-artikelnummer 442-9253
Tillv. art.nr1SVR450335R0000
VarumärkeABB
2 326,50 kr
Each
Enheter
Phase 24 → 240 V ac/dc DPDT - 1, 3 - Overcurrent, Undercurrent 0.5A 5A - 0.2 → 2 s - - -
RS-artikelnummer 775-7980
Tillv. art.nr1SVR730840R0700
VarumärkeABB
2 186,91 kr
Each
Enheter
Current 24 → 240 V ac/dc DPDT - 1 - Overcurrent, Undercurrent 0.3 A, 1 A, 3 A 1.5 A, 5 A, 15 A - 0 s, 0.1 → 30 s - - -
RS-artikelnummer 775-7946
Tillv. art.nr1SVR730830R0300
VarumärkeABB
1 861,20 kr
Each
Enheter
Voltage 24 → 240 V ac/dc SPDT Overvoltage, Undervoltage 1 3 → 30 V, 6 → 60 V, 30 → 300 V, 60 → 600 V - - - - - - - -
RS-artikelnummer 806-5935
Tillv. art.nr1SVR740660R0100
VarumärkeABB
2 521,93 kr
Each
Enheter
Insulation 24 → 240 V ac/dc DPDT - - 0 → 250 V ac, 0 → 300 V dc - - - - - - - -
RS-artikelnummer 876-5774
Tillv. art.nrCM-TCS.21P
VarumärkeABB
1 721,61 kr
Each
Enheter
Temperature 24 V ac/dc SPDT - 3 - - - - - 20 ms Overtemperature, Temperature Window Monitoring, Undertemperature -50 → +50°C 45 → 65 Hz
RS-artikelnummer 876-5758
Tillv. art.nrCM-TCS.11S
VarumärkeABB
2 038,01 kr
Each
Enheter
Temperature 24 → 240 V ac/dc SPDT - 3 - - - - - 20 ms Overtemperature, Temperature Window Monitoring, Undertemperature -50 → +50°C 13.5 → 440 Hz
RS-artikelnummer 442-9001
Tillv. art.nr1SVR550882R9500
VarumärkeABB
674,69 kr
Each
Enheter
Phase 380 → 440 V ac SPST - 1, 3 - - - - Phase Failure 150 ms - - -
RS-artikelnummer 775-7920
Tillv. art.nr1SVR750487R8300
VarumärkeABB
2 633,60 kr
Each
Enheter
Phase, Voltage 350 → 580 V ac DPDT Overvoltage, Undervoltage 3 350 → 580 V ac - - - Phase Failure, Phase Imbalance, Phase Sequence 0 s, 0.1 → 30 s - - 45 → 65 Hz
RS-artikelnummer 442-9449
Tillv. art.nr1SVR550871R9500
VarumärkeABB
739,83 kr
Each
Enheter
Phase, Voltage 320 → 460 V ac SPST Overvoltage, Undervoltage 1, 3 320 → 460 V ac - - - Phase Failure 500 ms - - -
RS-artikelnummer 876-2557
Tillv. art.nrCM-UFD.M31
VarumärkeABB
5 675,96 kr
Each
Enheter
Frequency, Voltage 24 → 240 V ac/dc SPDT Overvoltage, Undervoltage 1, 3 0 → 312 (2 Wire) V ac, 0 → 312 (4 Wire) V ac, 0 → 540 (3 Wire) V ac - - - - ±20 ms - - 40 → 70 Hz