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 and frequency.


The factor that you need to measure will decide which monitoring relay you choose.

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Part Details Brand Stock Monitoring Application 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 Terminal Type Height Mounting Type Series Number of Poles Operating Temperature Range Dimensions Maximum Operating Temperature Special Features Frequency Sensitivity Current Range Maximum Temperature Sensed Maximum Voltage Sensed Minimum Temperature Sensed Minimum Voltage Sensed Minimum Frequency Sensed Length Minimum Operating Temperature Width
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Eaton Phase, Voltage Monitoring Relay
  • ₪ 1,479.07
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  • RS Stock No. 179-3530
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  • Mfr. Part No. 184764 & EMR6-AW500-D-1
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Eaton Phase, Voltage Monitoring Relay
  • ₪ 770.35
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  • RS Stock No. 179-3516
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  • Mfr. Part No. 184789 & EMR6-F500-G-1
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Broyce Control Voltage Monitoring Relay With SPDT Contacts
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Schneider Electric Frequency, Voltage with NFC Monitoring Relay, 3 Phase
  • ₪ 1,018.81
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Eaton Current Monitoring Relay, 1 Phase
  • ₪ 1,550.98
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  • RS Stock No. 179-3518
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Eaton Insulation Monitoring Relay
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Eaton Level Monitoring Relay
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Eaton Insulation Monitoring Relay
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Eaton Level Monitoring Relay
  • ₪ 777.95
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Eaton Phase, Voltage Monitoring Relay
  • ₪ 1,457.55
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  • RS Stock No. 179-3543
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  • Mfr. Part No. 184776 & EMR6-W300-C-1
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- - - - 300V ac Please note that the Stock level on this page is periodically updated during the day.

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Phoenix Contact Current Monitoring Relay
  • ₪ 1,446.33
  • Each
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Phoenix Contact Please note that the Stock level on this page is periodically updated during the day.

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Schneider Electric Please note that the Stock level on this page is periodically updated during the day.

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Zelio Control Please note that the Stock level on this page is periodically updated during the day.

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- - 22.9 x 79.5 x 90mm Please note that the Stock level on this page is periodically updated during the day.

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79.5mm Please note that the Stock level on this page is periodically updated during the day.

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Tele Voltage Monitoring Relay With SPDT Contacts, 3 Phase
  • ₪ 424.68
  • Each
  • Compare
  • RS Stock No. 182-9993
  • Brand Tele
  • Mfr. Part No. E1YF400V01 0.85
Tele Please note that the Stock level on this page is periodically updated during the day.

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3 Please note that the Stock level on this page is periodically updated during the day.

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- 3 Please note that the Stock level on this page is periodically updated during the day.

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- - - - - 200ms Please note that the Stock level on this page is periodically updated during the day.

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DIN Rail Please note that the Stock level on this page is periodically updated during the day.

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ENYA Please note that the Stock level on this page is periodically updated during the day.

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- -25 → +55°C Please note that the Stock level on this page is periodically updated during the day.

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- - - - - - - 48Hz Please note that the Stock level on this page is periodically updated during the day.

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65mm Please note that the Stock level on this page is periodically updated during the day.

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Broyce Control Phase Voltage Monitoring Relay With SPDT Contacts, 3 Phase
  • ₪ 886.51
  • Each
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Broyce Control Please note that the Stock level on this page is periodically updated during the day.

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2 Please note that the Stock level on this page is periodically updated during the day.

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- - - - - - - - - - - - - 17.5mm Please note that the Stock level on this page is periodically updated during the day.

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Broyce Control Voltage Monitoring Relay With 2 x SPNO Contacts
  • ₪ 463.98
  • Each
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Broyce Control Please note that the Stock level on this page is periodically updated during the day.

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Screw Please note that the Stock level on this page is periodically updated during the day.

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85mm Please note that the Stock level on this page is periodically updated during the day.

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- 1 Please note that the Stock level on this page is periodically updated during the day.

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-20 → +60°C Please note that the Stock level on this page is periodically updated during the day.

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44 x 63.5 x 85mm Please note that the Stock level on this page is periodically updated during the day.

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- - Maximum of 5A Please note that the Stock level on this page is periodically updated during the day.

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- - - - 48Hz Please note that the Stock level on this page is periodically updated during the day.

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44mm Please note that the Stock level on this page is periodically updated during the day.

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63.5mm Please note that the Stock level on this page is periodically updated during the day.

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Eaton Current Monitoring Relay, 1 Phase
  • ₪ 1,551.12
  • Each
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  • RS Stock No. 179-3519
  • Brand Eaton
  • Mfr. Part No. 184754 & EMR6-I15-A-1
Eaton Please note that the Stock level on this page is periodically updated during the day.

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2 Please note that the Stock level on this page is periodically updated during the day.

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Current Please note that the Stock level on this page is periodically updated during the day.

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- - - Screw Please note that the Stock level on this page is periodically updated during the day.

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78mm Please note that the Stock level on this page is periodically updated during the day.

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EMR6 Please note that the Stock level on this page is periodically updated during the day.

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- -25 → +60°C Please note that the Stock level on this page is periodically updated during the day.

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-25°C Please note that the Stock level on this page is periodically updated during the day.

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109.5mm Please note that the Stock level on this page is periodically updated during the day.

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Eaton Current Monitoring Relay, 1 Phase
  • ₪ 1,644.09
  • Each
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  • RS Stock No. 179-3548
  • Brand Eaton
  • Mfr. Part No. 184780 & EMR6-IM1-A-1
Eaton Please note that the Stock level on this page is periodically updated during the day.

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2 Please note that the Stock level on this page is periodically updated during the day.

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Current Please note that the Stock level on this page is periodically updated during the day.

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- - 1 Please note that the Stock level on this page is periodically updated during the day.

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78mm Please note that the Stock level on this page is periodically updated during the day.

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DIN Rail Please note that the Stock level on this page is periodically updated during the day.

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EMR6 Please note that the Stock level on this page is periodically updated during the day.

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- -25 → +60°C Please note that the Stock level on this page is periodically updated during the day.

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22.5 x 109.5 x 78mm Please note that the Stock level on this page is periodically updated during the day.

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+60°C Please note that the Stock level on this page is periodically updated during the day.

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- - 0.003 → 0.03 A, 0.01 → 0.1 A, 0.1 → 1A Please note that the Stock level on this page is periodically updated during the day.

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- - - - - 22.5mm Please note that the Stock level on this page is periodically updated during the day.

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-25°C Please note that the Stock level on this page is periodically updated during the day.

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109.5mm Please note that the Stock level on this page is periodically updated during the day.

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Eaton Current Monitoring Relay, 1 Phase
  • ₪ 1,644.25
  • Each
  • Compare
  • RS Stock No. 179-3550
  • Brand Eaton
  • Mfr. Part No. 184782 & EMR6-IF1-A-1
Eaton Please note that the Stock level on this page is periodically updated during the day.

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2 Please note that the Stock level on this page is periodically updated during the day.

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Current Please note that the Stock level on this page is periodically updated during the day.

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- - 1 Please note that the Stock level on this page is periodically updated during the day.

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- - - Screw Please note that the Stock level on this page is periodically updated during the day.

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78mm Please note that the Stock level on this page is periodically updated during the day.

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DIN Rail Please note that the Stock level on this page is periodically updated during the day.

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EMR6 Please note that the Stock level on this page is periodically updated during the day.

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- -25 → +60°C Please note that the Stock level on this page is periodically updated during the day.

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22.5 x 109.5 x 78mm Please note that the Stock level on this page is periodically updated during the day.

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+60°C Please note that the Stock level on this page is periodically updated during the day.

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- - 0.003 → 0.03 A, 0.01 → 0.1 A, 0.1 → 1A Please note that the Stock level on this page is periodically updated during the day.

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- - - - - 22.5mm Please note that the Stock level on this page is periodically updated during the day.

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-25°C Please note that the Stock level on this page is periodically updated during the day.

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109.5mm Please note that the Stock level on this page is periodically updated during the day.

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Eaton Level Monitoring Relay
  • ₪ 1,135.67
  • Each
  • Compare
  • RS Stock No. 179-3522
  • Brand Eaton
  • Mfr. Part No. 184757 & EMR6-N1000-A-1
Eaton Please note that the Stock level on this page is periodically updated during the day.

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2 Please note that the Stock level on this page is periodically updated during the day.

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Level Please note that the Stock level on this page is periodically updated during the day.

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- - - - - - - - 0.1 → 30s Please note that the Stock level on this page is periodically updated during the day.

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- - - Screw Please note that the Stock level on this page is periodically updated during the day.

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78mm Please note that the Stock level on this page is periodically updated during the day.

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DIN Rail Please note that the Stock level on this page is periodically updated during the day.

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EMR6 Please note that the Stock level on this page is periodically updated during the day.

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- -25 → +60°C Please note that the Stock level on this page is periodically updated during the day.

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22.5 x 109.5 x 78mm Please note that the Stock level on this page is periodically updated during the day.

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+60°C Please note that the Stock level on this page is periodically updated during the day.

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- - - - - - - - 22.5mm Please note that the Stock level on this page is periodically updated during the day.

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-25°C Please note that the Stock level on this page is periodically updated during the day.

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109.5mm Please note that the Stock level on this page is periodically updated during the day.

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