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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กำลังดูสินค้า 1 - 3 รายการจาก 3 รายการ / Viewing 1 - 3 of 3 products
ผลการค้นหาต่อหน้า / Results Per Page
รายละเอียดสินค้า / Description ราคา / 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 Stock No. 914-3945
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.ECPF03
Brand :Relpol
THB594.89
Each
Units
Phase, Voltage 220 → 460 V SPDT Overvoltage, Undervoltage 3 45 → 65 Hz, 176 → 552 V - - - Phase Failure, Phase Sequence - - - -
RS Stock No. 914-3957
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.ECPF08
Brand :Relpol
THB1,026.31
Each
Units
Phase, Voltage 220 → 460 V SPDT Overvoltage, Undervoltage 3 45 → 65 Hz, 176 → 552 V - - - Phase Failure, Phase Sequence 2 s - - -
RS Stock No. 914-3954
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.ECPF05
Brand :Relpol
THB1,057.56
Each
Units
Phase, Voltage 220 → 460 V SPDT Overvoltage, Undervoltage 3 45 → 65 Hz, 176 → 552 V - - - Phase Failure, Phase Sequence 0.1 → 10 s - - -