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 857-7662
Tillv. art.nrDPA51CM44
VarumärkeCarlo Gavazzi
1 604,27 kr
Each
Enheter
Phase 208 → 480 V ac SPDT - 3 177 → 550 V ac - - - Phase Loss, Phase Sequence - - - -
RS-artikelnummer 859-3027
Tillv. art.nrDUA52C724
VarumärkeCarlo Gavazzi
1 158,83 kr
Each
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Voltage 12 → 24 V dc SPDT Undervoltage - 8 → 28 V dc - - - - <200 ms - - -
RS-artikelnummer 857-7416
Tillv. art.nrPPA01CM44
VarumärkeCarlo Gavazzi
1 109,91 kr
Each
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Phase, Voltage 208 → 480 V ac SPDT - 3 177 → 475 V ac - - - Phase Loss, Phase Sequence - - - -
RS-artikelnummer 856-8551
Tillv. art.nrDPC01DM69400HZ
VarumärkeCarlo Gavazzi
3 501,85 kr
Each
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Phase, Voltage 600 → 690 V ac SPDT Overvoltage, Undervoltage 3, 3+N 510 → 793 V ac - - - Asymmetry, Phase Loss, Phase Sequence, Tolerance 1 s, 6 s - - 50 → 400 Hz
RS-artikelnummer 857-7696
Tillv. art.nrDPB01CM48
VarumärkeCarlo Gavazzi
2 367,53 kr
Each
Enheter
Phase, Voltage 380 → 480 V ac SPDT Overvoltage, Undervoltage 3, 3+N 323 → 550 V ac - - - Phase Loss, Phase Sequence 1 s, 6 s - - -
RS-artikelnummer 859-3077
Tillv. art.nrDFB01CM24
VarumärkeCarlo Gavazzi
2 527,65 kr
Each
Enheter
- - - - - - - - - - - - - -
RS-artikelnummer 857-7280
Tillv. art.nrDWB01CM4810A
VarumärkeCarlo Gavazzi
2 484,23 kr
Each
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Power Factor 380 → 480 V ac SPDT - 3 - - - 5 A, 10 A - 1 → 30 s - - -
RS-artikelnummer 857-7426
Tillv. art.nrDPC01DM48
VarumärkeCarlo Gavazzi
3 262,58 kr
Each
Enheter
Phase, Voltage 380 → 480 V ac SPDT Overvoltage, Undervoltage 3, 3+N 323 → 550 V ac - - - Asymmetry, Phase Loss, Phase Sequence, Tolerance 1 s, 6 s - - 50 → 60 Hz
Nytt
RS-artikelnummer 201-0821
Tillv. art.nrDTA04DM24
VarumärkeCarlo Gavazzi
1 045,38 kr
Each
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temperature 18 → 265 V ac SPST - Single - - - - - - - - -
RS-artikelnummer 857-7179
Tillv. art.nrDUB01CB23500V
VarumärkeCarlo Gavazzi
1 777,00 kr
Each
Enheter
Voltage 115/230 V ac SPDT Overvoltage, Undervoltage 1 2 → 500 V ac/dc - - - - 1 s, 6 s - - -
RS-artikelnummer 857-7072
Tillv. art.nrDIA53S72450A
VarumärkeCarlo Gavazzi
1 352,43 kr
Each
Enheter
Current - SPST - 1 - Overcurrent - - - <300 ms - - -
RS-artikelnummer 857-7075
Tillv. art.nrDIA53S72420A
VarumärkeCarlo Gavazzi
503,78 kr
Each
Enheter
Current - SPST - 1 - Overcurrent - - - <300 ms - - -
RS-artikelnummer 857-7680
Tillv. art.nrDPA01CM44
VarumärkeCarlo Gavazzi
1 326,65 kr
Each
Enheter
Phase, Voltage 208 → 480 V ac SPDT - 3 177 → 550 V ac - - - Phase Loss, Phase Sequence - - - -
Nytt
RS-artikelnummer 201-0819
Tillv. art.nrDIA01CB235A
VarumärkeCarlo Gavazzi
1 301,02 kr
Each
Enheter
Current 230 V ac SPDT - 1 - - - - - - - - -
RS-artikelnummer 857-7700
Tillv. art.nrDPC01DM69
VarumärkeCarlo Gavazzi
3 262,58 kr
Each
Enheter
Phase, Voltage 600 → 690 V ac SPDT Overvoltage, Undervoltage 3, 3+N 510 → 793 V ac - - - Asymmetry, Phase Loss, Phase Sequence, Tolerance 1 s, 6 s - - 50 → 60 Hz
Nytt
RS-artikelnummer 201-0822
Tillv. art.nrDUB02CT23
VarumärkeCarlo Gavazzi
1 544,05 kr
Each
Enheter
Volatge 230 V ac SPDT Overvoltage, Undervoltage 1 - - - - - - - - -
RS-artikelnummer 727-1256
Tillv. art.nrPUA01CB23500V
VarumärkeCarlo Gavazzi
668,99 kr
Each
Enheter
Current, Voltage 115/230 V ac SPDT Overvoltage - 0.4 → 500 V ac, 2 → 500 V dc Overcurrent - - - <300 ms - - -
Nytt
RS-artikelnummer 201-0824
Tillv. art.nrPPA01DM48
VarumärkeCarlo Gavazzi
1 421,76 kr
Each
Enheter
Phase 380 → 480 V ac DPDT Undervoltage 3 - - - - - - - - -
RS-artikelnummer 857-7527
Tillv. art.nrDIB01CB23500MA
VarumärkeCarlo Gavazzi
1 777,00 kr
Each
Enheter
Current 115/230 V ac SPDT - 1 - Overcurrent, Undercurrent - - - 1 s, 6 s - - -
RS-artikelnummer 859-3080
Tillv. art.nrDWA01CM485A
VarumärkeCarlo Gavazzi
1 998,36 kr
Each
Enheter
Power Factor Cosf 380 → 480 V ac SPDT - 3 - - - - - 1 s, 2 s, 6 s - - -