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 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

€ 23.25

€ 23.25 Each (ex VAT)

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1

Available in multiples of 1
1€ 23.25
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RS Pro
Current
Single
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

€ 21.35

€ 21.35 Each (ex VAT)

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1

Available in multiples of 1
1€ 21.35
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RS Pro
Liquid Level
Single
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
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RS Stock No.: 122-217Brand: RS PRO

€ 10.54

€ 10.54 Each (ex VAT)

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1

Available in multiples of 1
1€ 10.54
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RS Pro
Phase
Three
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
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RS Stock No.: 132-172Brand: RS PRO

€ 14.36

€ 14.36 Each (ex VAT)

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1

Available in multiples of 1
1€ 14.36
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RS Pro
Phase
Three
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
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RS Stock No.: 132-173Brand: RS PRO

€ 17.99

€ 17.99 Each (ex VAT)

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1

Available in multiples of 1
1€ 17.99
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RS Pro
Phase
Three
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
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RS Stock No.: 122-216Brand: RS PRO

€ 14.47

€ 14.47 Each (ex VAT)

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1

Available in multiples of 1
1€ 14.47
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RS Pro
Phase
Three
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
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RS Stock No.: 122-210Brand: RS PRO

€ 16.51

€ 16.51 Each (ex VAT)

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1

Available in multiples of 1
1€ 16.51
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RS Pro
Voltage
Single
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
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RS Stock No.: 122-215Brand: RS PRO

€ 22.06

€ 22.06 Each (ex VAT)

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1

Available in multiples of 1
1€ 22.06
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RS Pro
Voltage
Single
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
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RS Stock No.: 122-212Brand: RS PRO

€ 19.39

€ 19.39 Each (ex VAT)

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1

Available in multiples of 1
1€ 19.39
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RS Pro
Voltage
Three
380V ac
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DIN Rail
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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
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RS Stock No.: 223-7795Brand: RS PRO

€ 112.11

€ 112.11 Each (ex VAT)

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1

Available in multiples of 1
1€ 112.11
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RS Pro
Phase
3
Phase Loss, Voltage Assemmetry
SPDT
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DIN Rail
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-20°C
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17.5 x 90 x 66.5mm
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+60°C
-20 → +60°C
Screw
66.5mm
90mm
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RS PRO Voltage Monitoring Relay, 3 Phase, DPDT, DIN Rail
RS PRO Voltage Monitoring Relay, 3 Phase, DPDT, DIN Rail
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RS Stock No.: 223-7789Brand: RS PRO

€ 128.48

€ 128.48 Each (ex VAT)

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1

Available in multiples of 1
1€ 128.48
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RS Pro
Voltage
3
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DPDT
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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36 x 90 x 67mm
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+60°C
-10 → +60°C
Screw
66.21mm
36mm
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RS PRO Voltage Monitoring Relay, 3 Phase, DPDT, DIN Rail
RS PRO Voltage Monitoring Relay, 3 Phase, DPDT, DIN Rail
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RS Stock No.: 223-7790Brand: RS PRO

€ 137.56

€ 137.56 Each (ex VAT)

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1

Available in multiples of 1
1€ 137.56
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RS Pro
Voltage
3
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DPDT
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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36 x 90 x 67mm
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+60°C
-10 → +60°C
Screw
66.21mm
36mm
90mm
RS PRO Phase, Voltage Monitoring Relay, 3 Phase, SPDT, DIN Rail
RS PRO Phase, Voltage Monitoring Relay, 3 Phase, SPDT, DIN Rail
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RS Stock No.: 223-7788Brand: RS PRO

€ 119.40

€ 119.40 Each (ex VAT)

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1

Available in multiples of 1
1€ 119.40
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RS Pro
Phase, Voltage
3
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SPDT
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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45Hz
36 x 90 x 67mm
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+60°C
-10 → +60°C
Screw
66.21mm
36mm
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RS PRO Phase Monitoring Relay, 3 Phase, SPDT, DIN Rail
RS PRO Phase Monitoring Relay, 3 Phase, SPDT, DIN Rail
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RS Stock No.: 223-7791Brand: RS PRO

€ 114.10

€ 114.10 Each (ex VAT)

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1

Available in multiples of 1
1€ 114.10
Add to basket
RS Pro
Phase
3
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SPDT
Overvoltage Protection, Undervoltage Protection
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DIN Rail
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-20°C
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17.5 x 90 x 66.5mm
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+60°C
-20 → +60°C
Screw
66.5mm
90mm
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RS PRO Phase, Voltage Monitoring Relay, 3 Phase, DPDT, 243 → 540 V, DIN Rail, Surface Mount
RS PRO Phase, Voltage Monitoring Relay, 3 Phase, DPDT, 243 → 540 V, DIN Rail, Surface Mount
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RS Stock No.: 225-7388Brand: RS PRO

€ 116.06

€ 116.06 Each (ex VAT)

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1

Available in multiples of 1
1€ 116.06
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RS Pro
Phase, Voltage
3
243 → 540 V
DPDT
Undervoltage
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DIN Rail, Surface Mount
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Phase Failure, Phase Sequence
0.2 → 10s
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-20°C
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540V
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243 V
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89 x 17.5 x 66.5mm
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Microprocessor Based, Detects Incorrect Phase Sequence, Phase Loss And Neutral Loss, Adjustment For Under Voltage Trip Level, Adjustment For Time Delay
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+60°C
-20 → +60°C
Screw
89mm
17.5mm
66.5mm
RS PRO Phase Monitoring Relay, 3 Phase, DIN Rail, Surface Mount
RS PRO Phase Monitoring Relay, 3 Phase, DIN Rail, Surface Mount
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RS Stock No.: 225-7384Brand: RS PRO

€ 58.83

€ 58.83 Each (ex VAT)

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1

Available in multiples of 1
1€ 58.83
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RS Pro
Phase
3
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DIN Rail, Surface Mount
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Phase Failure, Phase Sequence
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-20°C
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3 LEDs for Phase presence status, Sequence Status,
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+60°C
-20 → +60°C
Screw
66.5mm
17.5mm
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RS PRO Phase, Voltage Monitoring Relay, 3 Phase, DPDT, DIN Rail
RS PRO Phase, Voltage Monitoring Relay, 3 Phase, DPDT, DIN Rail
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RS Stock No.: 225-7387Brand: RS PRO

€ 116.97

€ 116.97 Each (ex VAT)

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1

Available in multiples of 1
1€ 116.97
Add to basket
RS Pro
Phase, Voltage
3
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DPDT
Overvoltage, Undervoltage
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DIN Rail
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Phase Failure, Phase Sequence
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Screw
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17.5mm
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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.: 225-7386Brand: RS PRO

€ 105.27

€ 105.27 Each (ex VAT)

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1

Available in multiples of 1
1€ 105.27
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RS Pro
Voltage
3
-
DPDT
Overvoltage, Undervoltage
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DIN Rail
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Screw
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17.5mm
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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
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RS Stock No.: 102-6130Brand: RS PRO

€ 62.23

€ 62.23 Each (ex VAT)

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1

Available in multiples of 1
1€ 62.23
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RS Pro
Voltage
1
12 → 24V dc
SPDT
Undervoltage
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DIN Rail
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0 → 30s
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L
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-20°C
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24V dc
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12V dc
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17.5 x 66.5 x 89mm
1
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+60°C
+60°C
Screw
66.5mm
17.5mm
89mm
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

€ 67.89

€ 67.89 Each (ex VAT)

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1

Available in multiples of 1
1€ 67.89
Add to basket
RS Pro
Phase, Voltage
3
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SPDT
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
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17.5 x 66.5 x 89mm
1
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
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+60°C
+60°C
Screw
66.5mm
17.5mm
89mm

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