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.


...
Read more Read less

Filter

Visar 41 - 60 av 708 produkter
Resultat per sida
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 819-3286
Tillv. art.nrK8AK-VS2 24VAC/DC
VarumärkeOmron
1 160,00 kr
Each
Enheter
Voltage - SPDT Overvoltage, Undervoltage 1 1 → 10 V ac/dc, 3 → 30V ac/dc, 15 → 150 V ac/dc - - - - 0.1 → 30s - - -
RS-artikelnummer 914-3954
Tillv. art.nrECPF05
VarumärkeRelpol
347,33 kr
Each
Enheter
Phase, Voltage - SPDT Overvoltage, Undervoltage 3 - - - - Phase Failure, Phase Sequence 0.1 → 10s - - -
RS-artikelnummer 614-9347
Tillv. art.nr84870700
VarumärkeCrouzet
829,02 kr
Each
Enheter
Level Control - DPDT - - 24 → 240V ac - 10mA 5A - 0.1 → 5s - - 50 → 60Hz
RS-artikelnummer 124-0191
Tillv. art.nrRM35JA32MR
VarumärkeSchneider Electric
1 626,48 kr
Each
Enheter
Current - DPDT - 1 - Overcurrent, Undercurrent 150mA 15A - 0.1 → 30s - - -
RS-artikelnummer 850-5382
Tillv. art.nrLXPRF 280-520VAC
VarumärkeBroyce Control
592,07 kr
Each
Enheter
Phase, Voltage - SPDT Undervoltage - - - - - Phase Failure 100ms - - -
RS-artikelnummer 123-9721
Tillv. art.nrV2TF01
VarumärkeTele
535,41 kr
Each
Enheter
Temperature - SPST - 1 - - - - - 50ms Overtemperature - -
RS-artikelnummer 917-4850
Tillv. art.nrECOM0010
VarumärkeCelduc
1 563,34 kr
Each
Enheter
Current - - - 3 - - 2A 50A - - - - -
RS-artikelnummer 758-6942
Tillv. art.nr3UG4632-1AW30
VarumärkeSiemens
1 770,22 kr
Each
Enheter
Voltage - SPDT Overvoltage, Undervoltage - 10 → 600V ac/dc - - - - 0.1 → 20s - - -
RS-artikelnummer 123-9730
Tillv. art.nrK3UM230VAC02
VarumärkeTele
1 483,69 kr
Each
Enheter
Voltage - DPDT Undervoltage 1 Maximum of 230V ac - - - - - - - -
RS-artikelnummer 776-3657
Tillv. art.nrA9E16066
VarumärkeSchneider Electric
1 700,82 kr
Each
Enheter
Time Delay - SPDT - - 24 → 240V ac - - - - - - - -
RS-artikelnummer 614-9375
Tillv. art.nr84871120
VarumärkeCrouzet
1 275,95 kr
Each
Enheter
Current - 2NO/2NC - 3 - Overcurrent, Undercurrent 2mA 500mA - 0.1 → 3s - - -
RS-artikelnummer 776-1575
Tillv. art.nr72.01.8.024.0000
VarumärkeFinder
720,99 kr
Each
Enheter
Level - SPDT - 1 - - - - - 0.5 → 7s - - -
RS-artikelnummer 857-7696
Tillv. art.nrDPB01CM48
VarumärkeCarlo Gavazzi
2 582,50 kr
Each
Enheter
Phase, Voltage - SPDT Overvoltage, Undervoltage 3, 3+N 323 → 550V ac - - - Phase Loss, Phase Sequence 1 s, 6s - - -
RS-artikelnummer 518-7089
Tillv. art.nr3RS1140-1GW60
VarumärkeSiemens
4 180,29 kr
Each
Enheter
Temperature - SPST - - - - - - - 0 → 999s Overtemperature, Undertemperature -99 → +999°C -
RS-artikelnummer 146-200
Tillv. art.nrRM35JA31MW
VarumärkeSchneider Electric
1 330,76 kr
Each
Enheter
Current - DPDT - - - Overcurrent, Undercurrent 2mA 500mA - 0.3 → 30s - - -
RS-artikelnummer 146-250
Tillv. art.nrRM17TG00
VarumärkeSchneider Electric
967,82 kr
Each
Enheter
Phase - SPDT - 3 - - - - Phase Asymmetry, Phase Failure, Phase Sequence <100ms - - -
RS-artikelnummer 819-3309
Tillv. art.nrK8AK-VW3 24VAC/DC
VarumärkeOmron
1 257,38 kr
Each
Enheter
Voltage - SPDT Overvoltage, Undervoltage 1 20 → 200 V ac/dc, 30 → 300 V ac/dc, 60 → 600V ac/dc - - - - 0.1 → 30s - - -
RS-artikelnummer 819-3245
Tillv. art.nrK8AK-LS1 100-240VAC
VarumärkeOmron
883,00 kr
Each
Enheter
Level Control - SPDT - - - - - - - - - - -
RS-artikelnummer 876-5768
Tillv. art.nr1SVR730740R0300 CM-TCS.13S
VarumärkeABB
2 214,62 kr
Each
Enheter
Temperature - SPDT - 3 - - - - - 20ms Overtemperature, Temperature Window Monitoring, Undertemperature 0 → +200°C 13.5 → 440Hz
RS-artikelnummer 776-1579
Tillv. art.nr72.01.8.024.0002
VarumärkeFinder
740,61 kr
Each
Enheter
Level - SPDT - 1 - - - - - 0.5 → 7s - - -