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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제품설명 단가 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 제품 번호 361-1619
제조사 부품 번호45051 24/115/230VAC
제조사Broyce Control
₩147,299.60
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Voltage 24 V ac, 115 V ac, 230 V ac SPDT Overvoltage, Undervoltage 1 Maximum of 230 V ac - - - - 0.1 10 s - - -
RS 제품 번호 397-9202
제조사 부품 번호45PUVR-4W 400VAC
제조사Broyce Control
₩131,880.20
Each
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Phase, Voltage 400 V ac DPDT Undervoltage 3 Maximum of 400 V ac - - - Neutral Loss, Phase Loss 200 ms - - -
RS 제품 번호 261-959
제조사 부품 번호84871122
제조사Crouzet
₩155,477.40
Each
수량
Current 24 240 V ac/dc SP-NO/NC - - - Overcurrent, Undercurrent 2A 20A - 500 ms - - -
RS 제품 번호 145-960
제조사 부품 번호RM35LM33MW
₩119,970.00
Each
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- 20.4 264 V ac/dc - - - - - - - - - - - -
RS 제품 번호 124-0193
제조사 부품 번호RM35LM33MW
₩113,484.80
Each
수량
Level 20.4 264 V ac/dc DPDT - 1 - - - - - 0.1 5 s - - -
RS 제품 번호 819-3254
제조사 부품 번호K8AKPH1200500VAC
제조사Omron
₩90,344.85
Each
수량
Phase 200 480 V ac DPDT - 3 - - - - Phase Loss, Phase Sequence 0.1 s - - -
RS 제품 번호 614-9397
제조사 부품 번호84871130
제조사Crouzet
₩183,690.50
Each
수량
Current 24 240 V ac/dc DPDT - 3 - Overcurrent, Undercurrent 0.1A 10A - 0.1 3 s - - -
RS 제품 번호 463-3654
제조사 부품 번호84871034
제조사Crouzet
₩165,189.70
Each
수량
Current 230 V ac SPDT - 1 - Overcurrent, Undercurrent 0.1mA 10A - 0.1 3 s - - -
RS 제품 번호 518-7168
제조사 부품 번호3UG4622-1AW30
제조사Siemens
₩193,746.90
Each
수량
Current 24 240 V ac/dc SPDT - 1 - Overcurrent, Undercurrent 50mA 10A - 0.1 20 s - - -
RS 제품 번호 850-5395
제조사 부품 번호LXCVR 230V
제조사Broyce Control
₩82,731.25
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Phase, Voltage 230 V ac SPDT Overvoltage, Undervoltage - 173 218 (Under) V, 242 288 (Over) V - - - Single Phase 0.2 10 s - - -
RS 제품 번호 397-9145
제조사 부품 번호70POCR 400VAC
제조사Broyce Control
₩259,773.80
Each
수량
Current 400 V ac DPDT - 3 - Overcurrent - 5A - 0.2 10 s - - -
RS 제품 번호 518-7174
제조사 부품 번호3UG4615-1CR20
제조사Siemens
₩250,490.85
Each
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Phase, Voltage 160 690 V ac DPDT Overvoltage, Undervoltage 3 160 690 V ac - - - Phase Failure, Phase Sequence 0.1 20 s - - -
RS 제품 번호 775-7974
제조사 부품 번호1SVR730840R0400
제조사ABB
₩307,447.15
Each
수량
Current 24 240 V ac/dc DPDT - 1 - Overcurrent, Undercurrent 0.1 A, 3 mA, 10 mA 1 A, 30 mA, 100 mA - 0 s, 0.1 30 s - - 50 60 Hz
RS 제품 번호 775-7902
제조사 부품 번호1SVR730884R3300
제조사ABB
₩326,764.80
Each
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Phase, Voltage 300 500 V ac DPDT Overvoltage, Undervoltage 3 300 500 V ac - - - Phase Failure, Phase Imbalance, Phase Sequence 0 s, 0.1 30 s - - 45 65 Hz
RS 제품 번호 775-7942
제조사 부품 번호1SVR730760R0500
제조사ABB
₩334,176.90
Each
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Current 24 240 V ac/dc DPDT - 1 - Overcurrent, Undercurrent 0.3 A, 1 A, 3 A 1.5 A, 5 A, 15 A - 0 s, 0.1 30 s - - -
RS 제품 번호 850-5411
제조사 부품 번호LBVR/A 12-24VDC
제조사Broyce Control
₩78,075.05
Each
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Voltage 8 30 V dc SPDT Undervoltage - 12 24 V dc - - - - 0 30 s - - -
RS 제품 번호 518-7297
제조사 부품 번호3UG4513-1BR20
제조사Siemens
₩215,426.75
Each
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Phase, Voltage 160 690 V ac DPDT Undervoltage 3 160 690 V ac - - - Phase Failure, Phase Imbalance, Phase Sequence 0.1 20 s - - -
RS 제품 번호 914-4654
제조사 부품 번호ICV 230Vac
제조사Hiquel
₩146,927.60
Each
수량
Voltage 230 V ac DPDT Overvoltage, Undervoltage 1 0 10 (E1-M) V, 0 45 (E2-M) V, 0 450 (E3-M) V - - - - - - - -
RS 제품 번호 850-5405
제조사 부품 번호LMCVR-500V 24-230VAC/DC
제조사Broyce Control
₩134,674.85
Each
수량
Voltage 24 230 V ac/dc SPDT Overvoltage, Undervoltage - 2 20 V, 5 50 V, 10 100 V, 20 200 V, 50 500 V - - - - 0.1 30 s - - -
RS 제품 번호 775-7970
제조사 부품 번호1SVR730840R0300
제조사ABB
₩284,084.00
Each
수량
Current 24 240 V ac/dc SPDT - 1 - Overcurrent, Undercurrent 0.3 A, 1 A, 3 A 1.5 A, 5 A, 15 A - - - - -