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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

€ 40.01

€ 40.01 Each (ex VAT)

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1

Available in multiples of 1
1€ 40.01
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RS Pro
Current
Single
-
150 → 260V ac
-
-
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

€ 36.75

€ 36.75 Each (ex VAT)

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1

Available in multiples of 1
1€ 36.75
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RS Pro
Liquid Level
Single
-
150 → 260V ac
-
-
DIN Rail
-
-
-
-
-
-
-
-
-
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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

€ 18.14

€ 18.14 Each (ex VAT)

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1

Available in multiples of 1
1€ 18.14
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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

€ 24.91

€ 24.91 Each (ex VAT)

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1

Available in multiples of 1
1€ 24.91
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RS Pro
Phase
Three
-
380V ac
-
-
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

€ 30.94

€ 30.94 Each (ex VAT)

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1

Available in multiples of 1
1€ 30.94
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RS Pro
Phase
Three
-
380V ac
-
-
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

€ 24.73

€ 24.73 Each (ex VAT)

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1

Available in multiples of 1
1€ 24.73
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

€ 37.96

€ 37.96 Each (ex VAT)

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1

Available in multiples of 1
1€ 37.96
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RS Pro
Voltage
Single
-
220V 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.: 122-210Brand: RS PRO

€ 28.42

€ 28.42 Each (ex VAT)

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1

Available in multiples of 1
1€ 28.42
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RS Pro
Voltage
Single
-
220V ac
-
-
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

€ 33.36

€ 33.36 Each (ex VAT)

Check stock

1

Available in multiples of 1
1€ 33.36
Add to basket
RS Pro
Voltage
Three
-
380V ac
-
-
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

€ 192.93

€ 192.93 Each (ex VAT)

Check stock

1

Available in multiples of 1
1€ 192.93
Add to basket
RS Pro
Phase
3
SPDT
Phase Loss, Voltage Assemmetry
-
-
DIN Rail
-
-
-
-
-
-
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Screw
90mm
-20 → +60°C
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-20°C
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+60°C
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17.5 x 90 x 66.5mm
66.5mm
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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.: 223-7789Brand: RS PRO

€ 221.10

€ 221.10 Each (ex VAT)

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1

Available in multiples of 1
1€ 221.10
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RS Pro
Voltage
3
DPDT
-
Overvoltage Protection, Undervoltage Protection
-
DIN Rail
-
-
-
-
-
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2 → 999s
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-
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Screw
36mm
-10 → +60°C
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-10°C
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+60°C
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36 x 90 x 67mm
66.21mm
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-
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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

€ 236.73

€ 236.73 Each (ex VAT)

Check stock

1

Available in multiples of 1
1€ 236.73
Add to basket
RS Pro
Voltage
3
DPDT
-
Overvoltage Protection, Undervoltage Protection
-
DIN Rail
-
-
-
-
-
-
2 → 999s
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-
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-
Screw
36mm
-10 → +60°C
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-10°C
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+60°C
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36 x 90 x 67mm
66.21mm
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90mm
-
-
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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.: 223-7788Brand: RS PRO

€ 205.45

€ 205.45 Each (ex VAT)

Check stock

1

Available in multiples of 1
1€ 205.45
Add to basket
RS Pro
Phase, Voltage
3
SPDT
-
Overvoltage Protection, Undervoltage Protection
-
DIN Rail
-
-
-
-
-
Phase Loss, Phase Sequence, Phase Asymmetry
2 → 999s
-
-
-
-
Screw
36mm
-10 → +60°C
-
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-10°C
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+60°C
-
36 x 90 x 67mm
66.21mm
45Hz
-
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65Hz
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-
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.: 223-7791Brand: RS PRO

€ 196.35

€ 196.35 Each (ex VAT)

Check stock

1

Available in multiples of 1
1€ 196.35
Add to basket
RS Pro
Phase
3
SPDT
-
Overvoltage Protection, Undervoltage Protection
-
DIN Rail
-
-
-
-
-
-
-
-
-
-
-
Screw
90mm
-20 → +60°C
-
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-20°C
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+60°C
-
17.5 x 90 x 66.5mm
66.5mm
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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

€ 199.73

€ 199.73 Each (ex VAT)

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1

Available in multiples of 1
1€ 199.73
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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
17.5mm
-20 → +60°C
Microprocessor Based, Detects Incorrect Phase Sequence, Phase Loss And Neutral Loss, Adjustment For Under Voltage Trip Level, Adjustment For Time Delay
-
-20°C
-
+60°C
-
89 x 17.5 x 66.5mm
89mm
-
66.5mm
-
540V
-
243 V
-
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

€ 101.23

€ 101.23 Each (ex VAT)

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1

Available in multiples of 1
1€ 101.23
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RS Pro
Phase
3
-
-
-
-
DIN Rail, Surface Mount
-
-
-
-
-
Phase Failure, Phase Sequence
-
-
-
-
-
Screw
17.5mm
-20 → +60°C
3 LEDs for Phase presence status, Sequence Status,
-
-20°C
-
+60°C
-
-
66.5mm
-
-
-
-
-
-
-
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

€ 201.29

€ 201.29 Each (ex VAT)

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1

Available in multiples of 1
1€ 201.29
Add to basket
RS Pro
Phase, Voltage
3
DPDT
-
Overvoltage, Undervoltage
-
DIN Rail
-
-
-
-
-
Phase Failure, Phase Sequence
-
-
-
-
-
Screw
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

€ 181.15

€ 181.15 Each (ex VAT)

Check stock

1

Available in multiples of 1
1€ 181.15
Add to basket
RS Pro
Voltage
3
DPDT
-
Overvoltage, Undervoltage
-
DIN Rail
-
-
-
-
-
-
-
-
-
-
-
Screw
17.5mm
-
-
-
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-
-
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-
-
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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

€ 107.10

€ 107.10 Each (ex VAT)

Check stock

1

Available in multiples of 1
1€ 107.10
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RS Pro
Voltage
1
SPDT
12 → 24V dc
Undervoltage
-
DIN Rail
-
-
-
-
-
-
0 → 30s
-
-
-
L
Screw
17.5mm
+60°C
-
-
-20°C
1
+60°C
-
17.5 x 66.5 x 89mm
66.5mm
-
89mm
-
24V dc
-
12V dc
-
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

€ 116.82

€ 116.82 Each (ex VAT)

Check stock

1

Available in multiples of 1
1€ 116.82
Add to basket
RS Pro
Phase, Voltage
3
SPDT
-
Undervoltage
-
DIN Rail
-
-
-
-
-
Phase Failure, Phase Sequence
0.2 → 10s
48 → 63Hz
-
-
L
Screw
17.5mm
+60°C
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
-
-20°C
1
+60°C
-
17.5 x 66.5 x 89mm
66.5mm
-
89mm
-
-
-
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