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 22 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 916-0198
製造零件編號PMA50A415
BrandLovato
HK$2,174.53
單位
Current - SPDT - 1, 3 - Overcurrent, Undercurrent 0.1A 16A - 0.1 → 10s - - -
RS庫存編號 916-0132
製造零件編號PMV55A240
BrandLovato
HK$1,654.27
單位
Voltage - SPDT Self Powered 1 Maximum of 400V ac - - - - 0.1 → 20s - - -
RS庫存編號 916-0189
製造零件編號PMA20240
BrandLovato
HK$1,595.27
單位
Current - SPDT - 1 - Overcurrent 0.25A 16A - 0.1 → 30s - - -
RS庫存編號 916-0081
製造零件編號PMV20A240
BrandLovato
HK$1,096.39
單位
Voltage - SPDT Self Powered 3 Maximum of 400V ac - - - - 60ms - - -
RS庫存編號 916-0218
製造零件編號PMF20A240
BrandLovato
HK$3,423.29
單位
Frequency - SPDT - 1, 3 - - - - - 0.1 → 20s - - 40 → 70Hz
RS庫存編號 916-0182
製造零件編號PMA30240
BrandLovato
HK$1,837.57
單位
Current - SPDT - 1 - Overcurrent 0.25A 16A - 0.1 → 30s - - -
RS庫存編號 916-0136
製造零件編號PMV55A440
BrandLovato
HK$1,654.27
單位
Voltage - SPDT Self Powered 1 Maximum of 400V ac - - - - 0.1 → 20s - - -
RS庫存編號 916-0192
製造零件編號PMA50A480
BrandLovato
HK$2,080.95
單位
Current - SPDT - 1, 3 - Overcurrent, Undercurrent 0.1A 16A - 0.1 → 10s - - -
RS庫存編號 916-0085
製造零件編號PMV20A575
BrandLovato
HK$1,096.39
單位
Voltage - SPDT Self Powered 3 Maximum of 400V ac - - - - 60ms - - -
RS庫存編號 916-0205
製造零件編號PMA60A415
BrandLovato
HK$2,802.17
單位
Phase - SPDT - 1, 3 - - - - Phase Shift 0.1 → 30s - - -
RS庫存編號 916-0094
製造零件編號PMV20A600
BrandLovato
HK$1,096.39
單位
Voltage - SPDT Self Powered 3 Maximum of 400V ac - - - - 60ms - - -
RS庫存編號 916-0164
製造零件編號PMV70NA600
BrandLovato
HK$2,541.03
單位
Voltage - SPDT Self Powered 3 Maximum of 400V ac - - - - 0.1 → 20s - - -
RS庫存編號 916-0195
製造零件編號PMA50A240
BrandLovato
HK$2,080.95
單位
Current - SPDT - 1, 3 - Overcurrent, Undercurrent 0.1A 16A - 0.1 → 10s - - -
RS庫存編號 916-0108
製造零件編號PMV40A575
BrandLovato
HK$1,342.77
單位
Voltage - SPDT Self Powered 3 Maximum of 400V ac - - - - 0.1 → 20s - - -
RS庫存編號 916-0126
製造零件編號PMV50NA240
BrandLovato
HK$2,376.55
單位
Voltage - SPDT Self Powered 3 Maximum of 400V ac - - - - 0.1 → 20s - - -
RS庫存編號 916-0186
製造零件編號PMA40240
BrandLovato
HK$2,202.10
單位
Current - SPDT - 1 - Overcurrent 1mA 16A - 0.1 → 30s - - -
RS庫存編號 916-0091
製造零件編號PMV30A575
BrandLovato
HK$1,280.71
單位
Voltage - SPDT Self Powered 3 Maximum of 400V ac - - - - 0.1 → 20s - - -
RS庫存編號 916-0170
製造零件編號PMV80NA600
BrandLovato
HK$5,594.20
單位
Voltage - SPDT Self Powered 3 Maximum of 400V ac - - - - 0.1 → 20s - - -
RS庫存編號 916-0114
製造零件編號PMV50A575
BrandLovato
HK$1,712.30
單位
Voltage - SPDT Self Powered 3 Maximum of 400V ac - - - - 0.1 → 20s - - -
RS庫存編號 916-0088
製造零件編號PMV10A440
BrandLovato
HK$840.52
單位
Voltage - SPDT Self Powered 3 Maximum of 400V ac - - - - 60ms - - -