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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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 914-4651
製造零件編號ICP200-400 (3 & 4 Wire)
BrandHiquel
TWD3,309.00
單位
Phase 150 → 440 V ac DPDT - 3 - - - - Phase Failure, Phase Sequence - - - -
RS庫存編號 914-4657
製造零件編號ICV 400Vac
BrandHiquel
TWD3,946.00
單位
Voltage 400 V ac DPDT Overvoltage, Undervoltage 1 0 → 10 (E1-M) V, 0 → 45 (E2-M) V, 0 → 450 (E3-M) V - - - - - - - -
RS庫存編號 914-4632
製造零件編號ICC 24Vac
BrandHiquel
TWD3,939.00
單位
Current 24 V ac DPDT - 1 - Overcurrent, Undercurrent 0 (E1-M) mA, 0 (E2-M) mA, 0 (E3-M) A 1 (E2-M) A, 10 (E3-M) A, 100 (E1-M) mA - - - - -
RS庫存編號 914-4660
製造零件編號ICP300-500 (3-Wire)
BrandHiquel
TWD3,309.00
單位
Phase 180 → 550 V ac DPDT - 3 - - - - Phase Failure, Phase Sequence - - - -
RS庫存編號 914-4648
製造零件編號ICC 400Vac
BrandHiquel
TWD4,073.00
單位
Current 400 V ac DPDT - 1 - Overcurrent, Undercurrent 0 (E1-M) mA, 0 (E2-M) mA, 0 (E3-M) A 1 (E2-M) A, 10 (E3-M) A, 100 (E1-M) mA - - - - -
RS庫存編號 914-4641
製造零件編號ICV 24Vac
BrandHiquel
TWD3,630.00
單位
Voltage 24 V ac DPDT Overvoltage, Undervoltage 1 0 → 10 (E1-M) V, 0 → 45 (E2-M) V, 0 → 450 (E3-M) V - - - - - - - -
RS庫存編號 914-4635
製造零件編號ICC 115Vac
BrandHiquel
TWD2,979.00
單位
Current 115 V ac DPDT - 1 - Overcurrent, Undercurrent 0 (E1-M) mA, 0 (E2-M) mA, 0 (E3-M) A 1 (E2-M) A, 10 (E3-M) A, 100 (E1-M) mA - - - - -
RS庫存編號 914-4663
製造零件編號ICP-V (4-Wire)
BrandHiquel
TWD3,309.00
單位
Phase 115 → 230 V ac DPDT - 3 - - - - Phase Failure, Phase Sequence - - - -
RS庫存編號 914-4645
製造零件編號ICV 115Vac
BrandHiquel
TWD3,630.00
單位
Voltage 115 V ac DPDT Overvoltage, Undervoltage 1 0 → 10 (E1-M) V, 0 → 45 (E2-M) V, 0 → 450 (E3-M) V - - - - - - - -
RS庫存編號 914-4639
製造零件編號ICC 230Vac
BrandHiquel
TWD3,715.00
單位
Current 230 V ac DPDT - 1 - Overcurrent, Undercurrent 0 (E1-M) mA, 0 (E2-M) mA, 0 (E3-M) A 1 (E2-M) A, 10 (E3-M) A, 100 (E1-M) mA - - - - -
RS庫存編號 914-4654
製造零件編號ICV 230Vac
BrandHiquel
TWD3,630.00
單位
Voltage 230 V ac DPDT Overvoltage, Undervoltage 1 0 → 10 (E1-M) V, 0 → 45 (E2-M) V, 0 → 450 (E3-M) V - - - - - - - -