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 850-5411
Tillv. art.nrLBVR/A 12-24VDC
VarumärkeBroyce Control
643,79 kr
Each
Enheter
Voltage - SPDT Undervoltage - 12 → 24V dc - - - - 0 → 30s - - -
RS-artikelnummer 775-8024
Tillv. art.nr1SVR740830R0400 CM-ESS.2P
VarumärkeABB
2 075,24 kr
Each
Enheter
Voltage - DPDT Overvoltage, Undervoltage 1 - - - - - 0 s, 0.1 → 30s - - -
RS-artikelnummer 123-9721
Tillv. art.nrV2TF01
VarumärkeTele
535,41 kr
Each
Enheter
Temperature - SPST - 1 - - - - - 50ms Overtemperature - -
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 518-7089
Tillv. art.nr3RS1140-1GW60
VarumärkeSiemens
4 180,29 kr
Each
Enheter
Temperature - SPST - - - - - - - 0 → 999s Overtemperature, Undertemperature -99 → +999°C -
RS-artikelnummer 146-250
Tillv. art.nrRM17TG00
VarumärkeSchneider Electric
967,82 kr
Each
Enheter
Phase - SPDT - 3 - - - - Phase Asymmetry, Phase Failure, Phase Sequence <100ms - - -
RS-artikelnummer 819-3273
Tillv. art.nrK8AK-TH11S 100-240VAC
VarumärkeOmron
1 106,00 kr
Each
Enheter
Temperature - SPDT - - - - - - - 100ms Overtemperature 0 → 999°C -
RS-artikelnummer 614-9432
Tillv. art.nr84872141
VarumärkeCrouzet
1 076,32 kr
Each
Enheter
Voltage - SPDT Overvoltage, Undervoltage 1 20 → 80V ac/dc - - - - 0.1 → 10s - - -
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 876-5768
Tillv. art.nr1SVR730740R0300 CM-TCS.13S
VarumärkeABB
2 038,01 kr
Each
Enheter
Temperature - SPDT - 3 - - - - - 20ms Overtemperature, Temperature Window Monitoring, Undertemperature 0 → +200°C 13.5 → 440Hz
RS-artikelnummer 876-4989
Tillv. art.nr1SVR740720R1400 CM-MSS.11P
VarumärkeABB
1 051,58 kr
Each
Enheter
Temperature - SPDT - - - - - - - <100ms Overtemperature, Winding Temperature - -
RS-artikelnummer 850-5409
Tillv. art.nrLMCVR-20V 24-230VAC/DC
VarumärkeBroyce Control
1 015,28 kr
Each
Enheter
Voltage - SPDT Overvoltage, Undervoltage - - - - - - 0.1 → 30s - - -
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 819-3201
Tillv. art.nrK8AK-AS1 100-240VAC
VarumärkeOmron
1 160,00 kr
Each
Enheter
Current - SPDT - 1 - Overcurrent, Undercurrent 2mA 500mA - - - - -
RS-artikelnummer 776-1581
Tillv. art.nr72.01.8.240.0000
VarumärkeFinder
720,99 kr
Each
Enheter
Level - SPDT - 1 - - - - - 0.5 → 7s - - -
RS-artikelnummer 859-3077
Tillv. art.nrDFB01CM24
VarumärkeCarlo Gavazzi
2 603,48 kr
Each
Enheter
- - - - - - - - - - - - - -
RS-artikelnummer 819-3254
Tillv. art.nrK8AKPH1200500VAC
VarumärkeOmron
958,00 kr
Each
Enheter
Phase - DPDT - 3 - - - - Phase Loss, Phase Sequence 0.1s - - -
RS-artikelnummer 876-5099
Tillv. art.nr716401
VarumärkeF Lutze Ltd
639,95 kr
Each
Enheter
- - - - - - Overcurrent 1A 10A - - - - -
RS-artikelnummer 518-7168
Tillv. art.nr3UG4622-1AW30
VarumärkeSiemens
1 812,88 kr
Each
Enheter
Current - SPDT - 1 - Overcurrent, Undercurrent 50mA 10A - 0.1 → 20s - - -
RS-artikelnummer 837-7490
Tillv. art.nr84873029
VarumärkeCrouzet
798,20 kr
Each
Enheter
Phase, Voltage - SPDT Overvoltage 3 183 → 528V ac - - - Phase Failure, Phase Sequence ≤650ms - - -