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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Omschrijving Prijs 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-stocknr. 131-791
Fabrikantnummer265574 & Z-TN230/SS
FabrikantEaton
52,71 €
Each
Aantal stuks
- - DPST - - - - - - - - - - 50Hz
RS-stocknr. 179-3537
Fabrikantnummer184771 & EMR6-AWN500-D-1
FabrikantEaton
204,00 €
Each
Aantal stuks
Phase, Voltage - - - - 300 → 500V ac - - - - 0.1 → 30s - - 50 → 60Hz
RS-stocknr. 179-3547
Fabrikantnummer184779 & EMR6-W500-D-1
FabrikantEaton
172,55 €
Each
Aantal stuks
Phase, Voltage - - - - 300 → 500V ac - - - - 0.1 → 30s - - 50 → 60Hz
RS-stocknr. 179-3544
Fabrikantnummer184777 & EMR6-W380-L-1
FabrikantEaton
140,25 €
Each
Aantal stuks
Phase, Voltage - - - - - - - - - 0.1 → 30s - - 50 → 60Hz
RS-stocknr. 179-3527
Fabrikantnummer184761 & EMR6-A300-C-1
FabrikantEaton
161,50 €
Each
Aantal stuks
Phase, Voltage - - - - 160 → 300V ac - - - - 0.1 → 30s - - 50 → 60Hz
RS-stocknr. 179-3556
Fabrikantnummer184787 & EMR6-T100-A-1
FabrikantEaton
199,75 €
Each
Aantal stuks
Temperature - - - - - - - - - - - 0 → +100°C -
RS-stocknr. 179-3521
Fabrikantnummer184756 & EMR6-N1000-N-1
FabrikantEaton
94,35 €
Each
Aantal stuks
Level - - - - - - - - - - - - -
RS-stocknr. 179-3533
Fabrikantnummer184767 & EMR6-AWM820-J-1
FabrikantEaton
228,65 €
Each
Aantal stuks
Phase, Voltage - - - - 530 → 820V ac - - - - 0.1 → 30s - - 50 → 60Hz
RS-stocknr. 179-3525
Fabrikantnummer184759 & EMR6-PH22
FabrikantEaton
8,84 €
Each
Aantal stuks
- - - - - - - - - - - - - -
RS-stocknr. 179-3519
Fabrikantnummer184754 & EMR6-I15-A-1
FabrikantEaton
183,60 €
Each
Aantal stuks
Current - - - - - - 0.3 A, 1 A, 3A 1.5 A, 5 A, 15A - 0.1 → 30s - - -
RS-stocknr. 179-3532
Fabrikantnummer184766 & EMR6-AWM720-I-1
FabrikantEaton
228,65 €
Each
Aantal stuks
Phase, Voltage - - - - 450 → 720V ac - - - - 0.1 → 30s - - 50 → 60Hz
RS-stocknr. 179-3542
Fabrikantnummer184775 & EMR6-RC690
FabrikantEaton
249,90 €
Each
Aantal stuks
Insulation - - - - 0 → 690V ac - - - - - - - -
RS-stocknr. 179-3522
Fabrikantnummer184757 & EMR6-N1000-A-1
FabrikantEaton
165,75 €
Each
Aantal stuks
Level - - - - - - - - - 0.1 → 30s - - -
RS-stocknr. 179-3552
Fabrikantnummer184783 & EMR6-IF15-A-1
FabrikantEaton
194,65 €
Each
Aantal stuks
Current - - - - - - 0.3 A, 1 A, 3A 1.5 A, 5 A, 15A - 0.1 → 30s - - -
RS-stocknr. 179-3534
Fabrikantnummer184768 & EMR6-AWN170-E-1
FabrikantEaton
182,75 €
Each
Aantal stuks
Phase, Voltage - - - - 90 → 170V ac - - - - 0.1 → 30s - - 50 → 60Hz
RS-stocknr. 179-3529
Fabrikantnummer184763 & EMR6-AW300-C-1
FabrikantEaton
175,10 €
Each
Aantal stuks
Phase, Voltage - - - - 160 → 300V ac - - - - 0.1 → 30s - - 50 → 60Hz
RS-stocknr. 179-3538
Fabrikantnummer184772 & EMR6-R250-A-1
FabrikantEaton
223,55 €
Each
Aantal stuks
Insulation - - - - 0 → 250 V ac, 0 → 300V dc - - - - - - - -
RS-stocknr. 179-3546
Fabrikantnummer184778 & EMR6-W400-M-1
FabrikantEaton
140,25 €
Each
Aantal stuks
Phase, Voltage - - - - - - - - - 0.1 → 30s - - 50 → 60Hz
RS-stocknr. 179-3526
Fabrikantnummer184760 & EMR6-PH45
FabrikantEaton
8,84 €
Each
Aantal stuks
- - - - - - - - - - - - - -
RS-stocknr. 179-3555
Fabrikantnummer184786 & EMR6-T50-A-1
FabrikantEaton
199,75 €
Each
Aantal stuks
Temperature - - - - - - - - - - - -50 → +50°C -