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.


...
顯示內容 隱藏內容

篩選條件

正在檢視 1 - 20,共 32 項產品
Results per page
Description Price 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庫存編號 801-6218
製造零件編號2866022
HK$1,448.78
單位
Current - DPDT - 1 - Overcurrent, Undercurrent 0A 0.1 A, 1 A, 10A - 0.1 → 10s - - -
RS庫存編號 890-3884
製造零件編號2902065
HK$1,197.88
單位
Current, Voltage - - - - 1.25 → 10V dc Overcurrent 2.5mA 20mA - - - - -
RS庫存編號 171-7045
製造零件編號2906252
HK$630.34
單位
Temperature - SPDT - - - - - - - - Winding Temperature - -
全新
RS庫存編號 207-4835
製造零件編號1038567
HK$8,107.14
單位
Current, Voltage - SPNO - - - - - - - - - - -
RS庫存編號 801-6220
製造零件編號2866048
HK$1,497.63
單位
Voltage - DPDT Overvoltage, Undervoltage 1 0 → 300V ac/dc - - - - 0.1 → 10s - - -
RS庫存編號 801-6224
製造零件編號2866035
HK$1,625.63
單位
Voltage - SPDT Undervoltage 1 0 → 300V ac/dc - - - - 0.2 → 10s - - -
RS庫存編號 801-6227
製造零件編號2866019
HK$1,625.63
單位
Current - SPDT - 1 - Overcurrent 0A 0.1 A, 1 A, 10A - 0.2 → 10s - - -
RS庫存編號 181-2030
製造零件編號2963598
HK$1,408.28
單位
- - - - - 19.2 → 28.8V dc - - - - - - - -
RS庫存編號 801-6236
製造零件編號2866051
HK$1,568.75
單位
Voltage - SPDT Window, Without Neutral Conductor Connection 3 280 → 520V ac - - - - 0.2 → 10s - - -
RS庫存編號 890-3875
製造零件編號2902035
HK$1,718.14
單位
Current, Voltage - SPDT - - - Overcurrent 0mA 24mA - - - - -
RS庫存編號 181-2035
製造零件編號2903591
HK$1,582.86
單位
Voltage - - - - 2 → 10V dc - - - - - - - -
RS庫存編號 890-3887
製造零件編號2905597
HK$1,113.77
單位
Voltage - DPDT Undervoltage 3 - - - - Phase Failure, Phase Sequence - - - 48 → 63Hz
RS庫存編號 801-6233
製造零件編號2866064
HK$1,578.06
單位
Phase, Voltage - DPDT Undervoltage, Window 3 280 → 520V ac - - - Phase Asymmetry, Phase Failure, Phase Sequence 0.1 → 10s - - -
RS庫存編號 181-2033
製造零件編號2903242
HK$1,999.40
單位
Current - - - - - - 0A 20A - - - - -
RS庫存編號 715-7986
製造零件編號2900177
HK$2,766.79
單位
Current, Temperature, Voltage - DPDT Overvoltage, Undervoltage 1, 3 0 → 480V ac Overcurrent, Undercurrent 0.15A 12A - 0.1 → 50s Overtemperature, Undertemperature - -
RS庫存編號 181-2032
製造零件編號2901674
HK$1,730.21
單位
- - - - - - - - - - - - - -
RS庫存編號 181-2031
製造零件編號2903241
HK$2,540.82
單位
Current - - - - - - 0A 20A - - - - -
全新
RS庫存編號 2552778012
製造零件編號2885249 (Each)
HK$3,799.82
單位
- - - - - - - - - - - - - -
全新
RS庫存編號 2552778013
製造零件編號2885809 (Each)
HK$4,069.33
單位
- - - - - - - - - - - - - -
全新
RS庫存編號 2552778014
製造零件編號2885906 (Each)
HK$2,715.02
單位
- - - - - - - - - - - - - -