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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Afficher 1 - 17 des 17 produits
Nombre de résultats par page
Description Prix 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
N° de stock RS 890-3884
Référence fabricant2902065
118,13 €
Each
Unité
Current, Voltage - - - - 1.25 → 10V dc Overcurrent 2.5mA 20mA - - - - -
N° de stock RS 890-3887
Référence fabricant2905597
102,95 €
Each
Unité
Voltage - DPDT Undervoltage 3 - - - - Phase Failure, Phase Sequence - - - 48 → 63Hz
N° de stock RS 890-3875
Référence fabricant2902035
173,08 €
Each
Unité
Current, Voltage - SPDT - - - Overcurrent 0mA 24mA - - - - -
N° de stock RS 801-6220
Référence fabricant2866048
199,53 €
Each
Unité
Voltage - DPDT Overvoltage, Undervoltage 1 0 → 300V ac/dc - - - - 0.1 → 10s - - -
N° de stock RS 801-6218
Référence fabricant2866022
190,03 €
Each
Unité
Current - DPDT - 1 - Overcurrent, Undercurrent 0A 0.1 A, 1 A, 10A - 0.1 → 10s - - -
N° de stock RS 801-6233
Référence fabricant2866064
190,03 €
Each
Unité
Phase, Voltage - DPDT Undervoltage, Window 3 280 → 520V ac - - - Phase Asymmetry, Phase Failure, Phase Sequence 0.1 → 10s - - -
N° de stock RS 181-2033
Référence fabricant2903242
245,64 €
Each
Unité
Current - - - - - - 0A 20A - - - - -
N° de stock RS 801-6224
Référence fabricant2866035
126,86 €
Each
Unité
Voltage - SPDT Undervoltage 1 0 → 300V ac/dc - - - - 0.2 → 10s - - -
N° de stock RS 181-2030
Référence fabricant2963598
83,17 €
Each
Unité
- - - - - 19.2 → 28.8V dc - - - - - - - -
N° de stock RS 715-7986
Référence fabricant2900177
215,90 €
Each
Unité
Current, Temperature, Voltage - DPDT Overvoltage, Undervoltage 1, 3 0 → 480V ac Overcurrent, Undercurrent 0.15A 12A - 0.1 → 50s Overtemperature, Undertemperature - -
Nouveau
N° de stock RS 207-4835
Référence fabricant1038567
751,45 €
Each
Unité
Current, Voltage - SPNO - - - - - - - - - - -
N° de stock RS 181-2032
Référence fabricant2901674
204,83 €
Each
Unité
- - - - - - - - - - - - - -
N° de stock RS 801-6227
Référence fabricant2866019
127,88 €
Each
Unité
Current - SPDT - 1 - Overcurrent 0A 0.1 A, 1 A, 10A - 0.2 → 10s - - -
N° de stock RS 801-6236
Référence fabricant2866051
123,05 €
Each
Unité
Voltage - SPDT Window, Without Neutral Conductor Connection 3 280 → 520V ac - - - - 0.2 → 10s - - -
N° de stock RS 171-7045
Référence fabricant2906252
65,66 €
Each
Unité
Temperature - SPDT - - - - - - - - Winding Temperature - -
N° de stock RS 181-2031
Référence fabricant2903241
326,90 €
Each
Unité
Current - - - - - - 0A 20A - - - - -
N° de stock RS 181-2035
Référence fabricant2903591
163,54 €
Each
Unité
Voltage - - - - 2 → 10V dc - - - - - - - -