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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RS PRO Phase, Voltage Monitoring Relay, Single Phase, CO, 270 → 370, 410 → 510V ac, DIN Rail
RS PRO Phase, Voltage Monitoring Relay, Single Phase, CO, 270 → 370, 410 → 510V ac, DIN Rail
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RS Stock No.: 558-898Brand: RS PRO

€ 52.39

€ 52.39 Each (Exc. Vat)

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1

Available in multiples of 1
1€ 52.39
Add to basket
RS Pro
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Voltage
1
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CO
150 → 300V ac
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Overvoltage, Undervoltage
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DIN Rail
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Screw
CE, cULus, DEKRA, IEC, IQNet, ISO EN 9000
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RS PRO Phase, Voltage Monitoring Relay, Three Phase, CO, 150 → 210, 240 → 300V ac, DIN Rail
RS PRO Phase, Voltage Monitoring Relay, Three Phase, CO, 150 → 210, 240 → 300V ac, DIN Rail
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RS Stock No.: 558-901Brand: RS PRO

€ 52.03

€ 52.03 Each (Exc. Vat)

Check stock

1

Available in multiples of 1
1€ 52.03
Add to basket
RS Pro
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-
Voltage
1
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-
CO
150 → 300V ac
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-
Overvoltage, Undervoltage
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DIN Rail
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Screw
CE, cULus, DEKRA, IEC, IQNet, ISO EN 9000
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RS PRO Phase, Voltage Monitoring Relay, Three Phase, CO, DIN Rail
RS PRO Phase, Voltage Monitoring Relay, Three Phase, CO, DIN Rail
Add to parts list
RS Stock No.: 558-897Brand: RS PRO

€ 37.87

€ 37.87 Each (Exc. Vat)

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1

Available in multiples of 1
1€ 37.87
Add to basket
RS Pro
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-
Voltage
3
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-
CO
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Voltage Asymmetry
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DIN Rail
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Screw
CE, cULus, DEKRA, IEC, IQNet, ISO EN 9000
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RS PRO Phase, Voltage Monitoring Relay, Three Phase, CO, DIN Rail
RS PRO Phase, Voltage Monitoring Relay, Three Phase, CO, DIN Rail
Add to parts list
RS Stock No.: 558-892Brand: RS PRO

€ 44.65

€ 44.65 Each (Exc. Vat)

Check stock

1

Available in multiples of 1
1€ 44.65
Add to basket
RS Pro
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-
Voltage
3
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-
CO
-
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Voltage Asymmetry
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DIN Rail
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Screw
CE, cULus, DEKRA, IEC, IQNet, ISO EN 9000
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RS PRO Current Monitoring Relay, Single Phase, 150 → 260V ac, DIN Rail
RS PRO Current Monitoring Relay, Single Phase, 150 → 260V ac, DIN Rail
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RS Stock No.: 132-174Brand: RS PRO

€ 29.40

€ 29.40 Each (Exc. Vat)

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1

Available in multiples of 1
1€ 29.40
Add to basket
RS Pro
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Current
Single
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150 → 260V ac
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DIN Rail
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RS PRO Liquid Level Monitoring Relay, Single Phase, 150 → 260V ac, DIN Rail
RS PRO Liquid Level Monitoring Relay, Single Phase, 150 → 260V ac, DIN Rail
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RS Stock No.: 132-171Brand: RS PRO

€ 26.98

€ 26.98 Each (Exc. Vat)

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1

Available in multiples of 1
1€ 26.98
Add to basket
RS Pro
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Liquid Level
Single
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150 → 260V ac
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DIN Rail
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RS PRO Phase Monitoring Relay, Three Phase, 150 → 260V ac, DIN Rail
RS PRO Phase Monitoring Relay, Three Phase, 150 → 260V ac, DIN Rail
Add to parts list
RS Stock No.: 122-217Brand: RS PRO

€ 13.31

€ 13.31 Each (Exc. Vat)

Check stock

1

Available in multiples of 1
1€ 13.31
Add to basket
RS Pro
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Phase
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 PRO Phase Monitoring Relay, Three Phase, 380V ac, DIN Rail
Add to parts list
RS Stock No.: 132-172Brand: RS PRO

€ 18.15

€ 18.15 Each (Exc. Vat)

Check stock

1

Available in multiples of 1
1€ 18.15
Add to basket
RS Pro
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Phase
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 PRO Phase Monitoring Relay, Three Phase, 380V ac, DIN Rail
Add to parts list
RS Stock No.: 132-173Brand: RS PRO

€ 22.75

€ 22.75 Each (Exc. Vat)

Check stock

1

Available in multiples of 1
1€ 22.75
Add to basket
RS Pro
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Phase
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 PRO Phase Monitoring Relay, Three Phase, 380V ac, DIN Rail
Add to parts list
RS Stock No.: 122-216Brand: RS PRO

€ 18.27

€ 18.27 Each (Exc. Vat)

Check stock

1

Available in multiples of 1
1€ 18.27
Add to basket
RS Pro
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Phase
Three
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-
380V ac
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DIN Rail
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RS PRO Voltage Monitoring Relay, Single Phase, 220V ac, DIN Rail
RS PRO Voltage Monitoring Relay, Single Phase, 220V ac, DIN Rail
Add to parts list
RS Stock No.: 122-215Brand: RS PRO

€ 27.83

€ 27.83 Each (Exc. Vat)

Check stock

1

Available in multiples of 1
1€ 27.83
Add to basket
RS Pro
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Voltage
Single
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-
220V ac
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DIN Rail
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RS PRO Voltage Monitoring Relay, Single Phase, 220V ac, DIN Rail
RS PRO Voltage Monitoring Relay, Single Phase, 220V ac, DIN Rail
Add to parts list
RS Stock No.: 122-210Brand: RS PRO

€ 20.81

€ 20.81 Each (Exc. Vat)

Check stock

1

Available in multiples of 1
1€ 20.81
Add to basket
RS Pro
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-
Voltage
Single
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220V ac
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DIN Rail
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RS PRO Voltage Monitoring Relay, Three Phase, 380V ac, DIN Rail
RS PRO Voltage Monitoring Relay, Three Phase, 380V ac, DIN Rail
Add to parts list
RS Stock No.: 122-212Brand: RS PRO

€ 24.44

€ 24.44 Each (Exc. Vat)

Check stock

1

Available in multiples of 1
1€ 24.44
Add to basket
RS Pro
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-
Voltage
Three
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-
-
380V ac
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-
-
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DIN Rail
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RS PRO Voltage Monitoring Relay, 1 Phase, SPDT, 12 → 24V dc, DIN Rail
RS PRO Voltage Monitoring Relay, 1 Phase, SPDT, 12 → 24V dc, DIN Rail
Add to parts list
RS Stock No.: 102-6130Brand: RS PRO

€ 78.65

€ 78.65 Each (Exc. Vat)

Check stock

1

Available in multiples of 1
1€ 78.65
Add to basket
RS Pro
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-
Voltage
1
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-
SPDT
12 → 24V dc
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-
Undervoltage
-
DIN Rail
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0 → 30s
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L
17.5mm
-
66.5mm
+60°C
89mm
17.5 x 66.5 x 89mm
-20°C
+60°C
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Screw
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1
-
24V dc
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12V dc
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-
RS PRO Phase, Voltage Monitoring Relay, 3 Phase, SPDT, DIN Rail
RS PRO Phase, Voltage Monitoring Relay, 3 Phase, SPDT, DIN Rail
Add to parts list
RS Stock No.: 102-6136Brand: RS PRO

€ 85.91

€ 85.91 Each (Exc. Vat)

Check stock

1

Available in multiples of 1
1€ 85.91
Add to basket
RS Pro
-
-
Phase, Voltage
3
-
-
SPDT
-
-
-
Undervoltage
-
DIN Rail
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Phase Failure, Phase Sequence
0.2 → 10s
48 → 63Hz
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L
17.5mm
-
66.5mm
+60°C
89mm
17.5 x 66.5 x 89mm
-20°C
+60°C
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Screw
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1
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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
RS PRO Phase Monitoring Relay, 3 Phase, SPDT, DIN Rail
RS PRO Phase Monitoring Relay, 3 Phase, SPDT, DIN Rail
Add to parts list
RS Stock No.: 223-7792Brand: RS PRO

€ 123.42

€ 123.42 Each (Exc. Vat)

Check stock

1

Available in multiples of 1
1€ 123.42
Add to basket
RS Pro
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-
Phase
3
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-
SPDT
-
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Overvoltage Protection, Undervoltage Protection
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DIN Rail
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90mm
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66.5mm
+60°C
-
17.5 x 90 x 66.5mm
-20°C
-20 → +60°C
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Screw
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RS PRO Phase Monitoring Relay, 3 Phase, SPDT, Phase Loss, Voltage Assemmetry, DIN Rail
RS PRO Phase Monitoring Relay, 3 Phase, SPDT, Phase Loss, Voltage Assemmetry, DIN Rail
Add to parts list
RS Stock No.: 223-7795Brand: RS PRO

€ 141.57

€ 141.57 Each (Exc. Vat)

Check stock

1

Available in multiples of 1
1€ 141.57
Add to basket
RS Pro
-
-
Phase
3
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-
SPDT
Phase Loss, Voltage Assemmetry
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DIN Rail
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90mm
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66.5mm
+60°C
-
17.5 x 90 x 66.5mm
-20°C
-20 → +60°C
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Screw
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RS PRO Phase, Voltage Monitoring Relay, 3 Phase, SPDT, Maximum of 280 V, DIN Rail
RS PRO Phase, Voltage Monitoring Relay, 3 Phase, SPDT, Maximum of 280 V, DIN Rail
Add to parts list
RS Stock No.: 102-6135Brand: RS PRO

€ 81.68

€ 81.68 Each (Exc. Vat)

Check stock

1

Available in multiples of 1
1€ 81.68
Add to basket
RS Pro
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-
Phase, Voltage
3
-
-
SPDT
Maximum of 280 V
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Undervoltage
-
DIN Rail
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-
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Phase Failure, Phase Sequence
100ms
48 → 63Hz
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L
17.5mm
-
66.5mm
+60°C
89mm
17.5 x 66.5 x 89mm
-20°C
+60°C
-
Screw
-
1
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280V
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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
RS PRO Voltage Monitoring Relay, 3 Phase, DPDT, DIN Rail
RS PRO Voltage Monitoring Relay, 3 Phase, DPDT, DIN Rail
Add to parts list
RS Stock No.: 223-7789Brand: RS PRO

€ 162.14

€ 162.14 Each (Exc. Vat)

Check stock

1

Available in multiples of 1
1€ 162.14
Add to basket
RS Pro
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-
Voltage
3
-
-
DPDT
-
-
-
Overvoltage Protection, Undervoltage Protection
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DIN Rail
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2 → 999s
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36mm
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66.21mm
+60°C
-
36 x 90 x 67mm
-10°C
-10 → +60°C
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Screw
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RS PRO Voltage Monitoring Relay, 3 Phase, DPDT, DIN Rail
RS PRO Voltage Monitoring Relay, 3 Phase, DPDT, DIN Rail
Add to parts list
RS Stock No.: 223-7790Brand: RS PRO

€ 174.24

€ 174.24 Each (Exc. Vat)

Check stock

1

Available in multiples of 1
1€ 174.24
Add to basket
RS Pro
-
-
Voltage
3
-
-
DPDT
-
-
-
Overvoltage Protection, Undervoltage Protection
-
DIN Rail
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2 → 999s
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36mm
-
66.21mm
+60°C
90mm
36 x 90 x 67mm
-10°C
-10 → +60°C
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Screw
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