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

€ 32.19

€ 32.19 Each (Exc. Vat)

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1

Available in multiples of 1
1€ 32.19
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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

€ 29.64

€ 29.64 Each (Exc. Vat)

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1

Available in multiples of 1
1€ 29.64
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RS Pro
Liquid Level
Single
-
150 → 260V ac
-
-
-
DIN Rail
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-
-
-
-
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-
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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

€ 14.64

€ 14.64 Each (Exc. Vat)

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1

Available in multiples of 1
1€ 14.64
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RS Pro
Phase
Three
-
150 → 260V ac
-
-
-
DIN Rail
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-
-
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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

€ 20.09

€ 20.09 Each (Exc. Vat)

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1

Available in multiples of 1
1€ 20.09
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RS Pro
Phase
Three
-
380V ac
-
-
-
DIN Rail
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-
-
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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

€ 24.93

€ 24.93 Each (Exc. Vat)

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1

Available in multiples of 1
1€ 24.93
Add to basket
RS Pro
Phase
Three
-
380V ac
-
-
-
DIN Rail
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-
-
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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

€ 19.96

€ 19.96 Each (Exc. Vat)

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1

Available in multiples of 1
1€ 19.96
Add to basket
RS Pro
Phase
Three
-
380V ac
-
-
-
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

€ 30.61

€ 30.61 Each (Exc. Vat)

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1

Available in multiples of 1
1€ 30.61
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RS Pro
Voltage
Single
-
220V ac
-
-
-
DIN Rail
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-
-
-
-
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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

€ 22.87

€ 22.87 Each (Exc. Vat)

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1

Available in multiples of 1
1€ 22.87
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RS Pro
Voltage
Single
-
220V ac
-
-
-
DIN Rail
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-
-
-
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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

€ 26.86

€ 26.86 Each (Exc. Vat)

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1

Available in multiples of 1
1€ 26.86
Add to basket
RS Pro
Voltage
Three
-
380V ac
-
-
-
DIN Rail
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-
-
-
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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

€ 154.88

€ 154.88 Each (Exc. Vat)

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1

Available in multiples of 1
1€ 154.88
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RS Pro
Phase
3
SPDT
Phase Loss, Voltage Assemmetry
-
-
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DIN Rail
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-
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Screw
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-20 → +60°C
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+60°C
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-20°C
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66.5mm
17.5 x 90 x 66.5mm
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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

€ 177.87

€ 177.87 Each (Exc. Vat)

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1

Available in multiples of 1
1€ 177.87
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RS Pro
Voltage
3
DPDT
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Overvoltage Protection, Undervoltage Protection
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DIN Rail
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-
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2 → 999s
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Screw
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-10 → +60°C
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+60°C
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-10°C
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66.21mm
36 x 90 x 67mm
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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

€ 191.18

€ 191.18 Each (Exc. Vat)

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1

Available in multiples of 1
1€ 191.18
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RS Pro
Voltage
3
DPDT
-
Overvoltage Protection, Undervoltage Protection
-
-
DIN Rail
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-
-
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2 → 999s
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Screw
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-10 → +60°C
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+60°C
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-10°C
90mm
66.21mm
36 x 90 x 67mm
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36mm
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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
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RS Stock No.: 223-7788Brand: RS PRO

€ 165.77

€ 165.77 Each (Exc. Vat)

Check stock

1

Available in multiples of 1
1€ 165.77
Add to basket
RS Pro
Phase, Voltage
3
SPDT
-
Overvoltage Protection, Undervoltage Protection
-
-
DIN Rail
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-
-
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Phase Loss, Phase Sequence, Phase Asymmetry
2 → 999s
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Screw
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65Hz
-10 → +60°C
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+60°C
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-10°C
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66.21mm
36 x 90 x 67mm
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36mm
45Hz
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

€ 158.51

€ 158.51 Each (Exc. Vat)

Check stock

1

Available in multiples of 1
1€ 158.51
Add to basket
RS Pro
Phase
3
SPDT
-
Overvoltage Protection, Undervoltage Protection
-
-
DIN Rail
-
-
-
-
-
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Screw
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-20 → +60°C
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+60°C
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-20°C
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66.5mm
17.5 x 90 x 66.5mm
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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

€ 160.93

€ 160.93 Each (Exc. Vat)

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1

Available in multiples of 1
1€ 160.93
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RS Pro
Phase, Voltage
3
DPDT
243 → 540 V
Undervoltage
-
-
DIN Rail, Surface Mount
-
-
-
-
Phase Failure, Phase Sequence
0.2 → 10s
-
-
-
-
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Screw
-
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243 V
540V
-
-20 → +60°C
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+60°C
-
-20°C
66.5mm
89mm
89 x 17.5 x 66.5mm
Microprocessor Based, Detects Incorrect Phase Sequence, Phase Loss And Neutral Loss, Adjustment For Under Voltage Trip Level, Adjustment For Time Delay
17.5mm
-
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

€ 81.68

€ 81.68 Each (Exc. Vat)

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1

Available in multiples of 1
1€ 81.68
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RS Pro
Phase
3
-
-
-
-
-
DIN Rail, Surface Mount
-
-
-
-
Phase Failure, Phase Sequence
-
-
-
-
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Screw
-
-
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-20 → +60°C
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+60°C
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-20°C
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66.5mm
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3 LEDs for Phase presence status, Sequence Status,
17.5mm
-
RS PRO Phase, Voltage Monitoring Relay, 3 Phase, DPDT, DIN Rail
RS PRO Phase, Voltage Monitoring Relay, 3 Phase, DPDT, DIN Rail
Add to parts list
RS Stock No.: 225-7387Brand: RS PRO

€ 162.14

€ 162.14 Each (Exc. Vat)

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1

Available in multiples of 1
1€ 162.14
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RS Pro
Phase, Voltage
3
DPDT
-
Overvoltage, Undervoltage
-
-
DIN Rail
-
-
-
-
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

€ 146.41

€ 146.41 Each (Exc. Vat)

Check stock

1

Available in multiples of 1
1€ 146.41
Add to basket
RS Pro
Voltage
3
DPDT
-
Overvoltage, Undervoltage
-
-
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
Add to parts list
RS Stock No.: 102-6130Brand: RS PRO

€ 86.52

€ 86.52 Each (Exc. Vat)

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1

Available in multiples of 1
1€ 86.52
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RS Pro
Voltage
1
SPDT
12 → 24V dc
Undervoltage
-
-
DIN Rail
-
-
-
-
-
0 → 30s
-
-
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L
1
Screw
-
-
12V dc
24V dc
-
+60°C
-
+60°C
-
-20°C
89mm
66.5mm
17.5 x 66.5 x 89mm
-
17.5mm
-
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

€ 94.38

€ 94.38 Each (Exc. Vat)

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1

Available in multiples of 1
1€ 94.38
Add to basket
RS Pro
Phase, Voltage
3
SPDT
-
Undervoltage
-
-
DIN Rail
-
-
-
-
Phase Failure, Phase Sequence
0.2 → 10s
48 → 63Hz
-
-
L
1
Screw
-
-
-
-
-
+60°C
-
+60°C
-
-20°C
89mm
66.5mm
17.5 x 66.5 x 89mm
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
17.5mm
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