Monitoring Relays

  • What are Monitoring Relays?

    Monitoring relays are electrical devices that are used to monitor various parameters in a power system, such as voltage, current, temperature, and frequency, and trigger an alarm or action if the values go beyond a preset threshold. They are designed to detect abnormal operating conditions in a system and alert operators or take corrective action to pre...

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AED 235.71

AED 235.71 Each (ex VAT)

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RS Pro
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Current
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Three
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1NO/1NC
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DIN Rail Mount
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40A
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100A
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0.1 → 20s
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40 → 100A
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-20°C
75mm
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-20 to 55°C
84.5mm
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44mm
CE
Error Delay Time Adjustable
55°C
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44 x 84.5 x 75mm

AED 213.72

AED 213.72 Each (ex VAT)

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RS Pro
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Voltage
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Single
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1NO
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120 → 300V ac
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Overvoltage
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DIN Rail Mount
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0.1 → 600s
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-20°C
90.3mm
300V
120V
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-20 to 55°C
67.5mm
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52.9mm
CE
Built-In Current Transformer, Built-In Contactor
55°C
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52.9 x 67.5 x 90.3mm

AED 170.01

AED 170.01 Each (ex VAT)

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RS Pro
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Voltage
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Three
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1NO/1NC
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230 → 460V ac
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Overvoltage
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DIN Rail or Panel
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Phase Loss
0.1 → 10s
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-20°C
75mm
460V
230V
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-20 to 55°C
84.5mm
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44mm
CE
Phase Sequence Control, With PTC, Non-Neutral
55°C
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44 x 84.5 x 75mm

AED 118.14

AED 118.14 Each (ex VAT)

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RS Pro
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Current
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Single
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150 → 260V ac
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DIN Rail
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AED 108.54

AED 108.54 Each (ex VAT)

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RS Pro
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Liquid Level
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Single
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150 → 260V ac
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DIN Rail
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AED 53.53

AED 53.53 Each (ex VAT)

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RS Pro
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Phase
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Three
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150 → 260V ac
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DIN Rail
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RS PRO Phase Monitoring Relay, Three Phase, 380V ac, DIN Rail
RS Stock No.: 122-216Brand: RS PRO

AED 73.54

AED 73.54 Each (ex VAT)

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RS Pro
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Phase
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Three
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380V ac
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DIN Rail
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RS PRO Phase Monitoring Relay, Three Phase, 380V ac, DIN Rail
RS Stock No.: 132-172Brand: RS PRO

AED 72.99

AED 72.99 Each (ex VAT)

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RS Pro
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Phase
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Three
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380V ac
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DIN Rail
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RS PRO Phase Monitoring Relay, Three Phase, 380V ac, DIN Rail
RS Stock No.: 132-173Brand: RS PRO

AED 91.39

AED 91.39 Each (ex VAT)

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RS Pro
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Phase
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Three
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380V ac
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DIN Rail
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AED 112.07

AED 112.07 Each (ex VAT)

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RS Pro
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Voltage
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Single
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220V ac
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DIN Rail
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AED 83.84

AED 83.84 Each (ex VAT)

Add to basket
RS Pro
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Voltage
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Single
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220V ac
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DIN Rail
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AED 98.56

AED 98.56 Each (ex VAT)

Add to basket
RS Pro
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Voltage
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Three
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380V ac
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DIN Rail
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AED 316.20

AED 316.20 Each (ex VAT)

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RS Pro
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Voltage
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1
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SPDT
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12 → 24V dc
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Undervoltage
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DIN Rail
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0 → 30s
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L
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-20°C
89mm
24V dc
12V dc
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+60°C
17.5mm
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66.5mm
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+60°C
1
Screw
17.5 x 66.5 x 89mm
RS PRO Phase, Voltage Monitoring Relay, 3 Phase, SPDT, DIN Rail
RS Stock No.: 102-6136Brand: RS PRO

AED 344.97

AED 344.97 Each (ex VAT)

Add to basket
RS Pro
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Phase, Voltage
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3
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SPDT
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Undervoltage
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DIN Rail
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Phase Failure, Phase Sequence
0.2 → 10s
48 → 63Hz
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L
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-20°C
89mm
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+60°C
17.5mm
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66.5mm
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2 LEDs for the Indication of Operational States, Adjustment for Time Delay, Adjustment for Undervoltage Trip Level, Detects Incorrect Phase Sequence & Phase Loss, Measures Phase to Phase Voltages, Microprocessor Based Relay, Monitors Own Supply & Detects an Undervoltage Condition on One or more Phases, True RMS Monitoring
+60°C
1
Screw
17.5 x 66.5 x 89mm

AED 569.67

AED 569.67 Each (ex VAT)

Add to basket
RS Pro
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Phase
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3
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SPDT
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Phase Loss, Voltage Assemmetry
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DIN Rail
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-20°C
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-20 → +60°C
90mm
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66.5mm
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+60°C
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Screw
17.5 x 90 x 66.5mm

AED 329.48

AED 329.48 Each (ex VAT)

Add to basket
RS Pro
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Phase, Voltage
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3
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SPDT
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Maximum of 280 V
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Undervoltage
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DIN Rail
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Phase Failure, Phase Sequence
100ms
48 → 63Hz
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L
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-20°C
89mm
280V
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+60°C
17.5mm
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66.5mm
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2 LEDs for the Indication of Operational States, Detects Incorrect Phase Sequence & Phase Loss, Fixed Time Delay, Fixed Undervoltage Trip Level, Measures Phase to Phase Voltages, Microprocessor Based Relay, Monitors Own Supply & Detects an Undervoltage Condition on One or more Phases, True RMS Monitoring
+60°C
1
Screw
17.5 x 66.5 x 89mm
RS PRO Voltage Monitoring Relay, 3 Phase, DPDT, DIN Rail
RS Stock No.: 223-7789Brand: RS PRO

AED 652.85

AED 652.85 Each (ex VAT)

Add to basket
RS Pro
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Voltage
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3
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DPDT
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Overvoltage Protection, Undervoltage Protection
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DIN Rail
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2 → 999s
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-10°C
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-10 → +60°C
36mm
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66.21mm
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+60°C
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Screw
36 x 90 x 67mm
RS PRO Voltage Monitoring Relay, 3 Phase, DPDT, DIN Rail
RS Stock No.: 223-7790Brand: RS PRO

AED 698.98

AED 698.98 Each (ex VAT)

Add to basket
RS Pro
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Voltage
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3
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DPDT
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Overvoltage Protection, Undervoltage Protection
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DIN Rail
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2 → 999s
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-10°C
90mm
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-10 → +60°C
36mm
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66.21mm
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+60°C
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Screw
36 x 90 x 67mm
RS PRO Phase, Voltage Monitoring Relay, 3 Phase, SPDT, DIN Rail
RS Stock No.: 223-7788Brand: RS PRO

AED 606.65

AED 606.65 Each (ex VAT)

Add to basket
RS Pro
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Phase, Voltage
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3
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SPDT
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Overvoltage Protection, Undervoltage Protection
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DIN Rail
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Phase Loss, Phase Sequence, Phase Asymmetry
2 → 999s
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-10°C
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65Hz
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-10 → +60°C
36mm
45Hz
66.21mm
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+60°C
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Screw
36 x 90 x 67mm
RS PRO Phase Monitoring Relay, 3 Phase, SPDT, DIN Rail
RS Stock No.: 223-7791Brand: RS PRO

AED 579.81

AED 579.81 Each (ex VAT)

Add to basket
RS Pro
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Phase
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3
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SPDT
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Overvoltage Protection, Undervoltage Protection
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DIN Rail
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-20°C
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-20 → +60°C
90mm
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66.5mm
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+60°C
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Screw
17.5 x 90 x 66.5mm

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