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, Three Phase, 1NO/1NC, DIN Rail Mount
RS PRO Current Monitoring Relay, Three Phase, 1NO/1NC, DIN Rail Mount
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RS Stock No.: 434-506Brand: RS PRO

26.582 OMR

26.582 OMR Each (ex VAT)

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1

Available in multiples of 1
126.582 OMR
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RS Pro
-
-
Current
-
-
Three
-
-
1NO/1NC
-
-
DIN Rail Mount
-
-
40A
100A
-
-
-
0.1 → 20s
-
-
-
-
-
55°C
-
-
CE
84.5mm
Error Delay Time Adjustable
44mm
40 → 100A
-
-
-20°C
-
-
-
-
-20 to 55°C
75mm
44 x 84.5 x 75mm
RS PRO Voltage Monitoring Relay, Single Phase, 1NO, 120 → 300V ac, DIN Rail Mount
RS PRO Voltage Monitoring Relay, Single Phase, 1NO, 120 → 300V ac, DIN Rail Mount
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RS Stock No.: 434-521Brand: RS PRO

23.453 OMR

23.453 OMR Each (ex VAT)

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1

Available in multiples of 1
123.453 OMR
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RS Pro
-
-
Voltage
-
-
Single
-
120 → 300V ac
1NO
-
Overvoltage
DIN Rail Mount
-
-
-
-
-
-
-
0.1 → 600s
-
-
-
-
-
55°C
-
-
CE
67.5mm
Built-In Current Transformer, Built-In Contactor
52.9mm
-
-
-
-20°C
-
300V
-
120V
-20 to 55°C
90.3mm
52.9 x 67.5 x 90.3mm
RS PRO Voltage Monitoring Relay, Three Phase, 1NO/1NC, 230 → 460V ac, DIN Rail or Panel
RS PRO Voltage Monitoring Relay, Three Phase, 1NO/1NC, 230 → 460V ac, DIN Rail or Panel
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RS Stock No.: 434-520Brand: RS PRO

18.717 OMR

18.717 OMR Each (ex VAT)

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1

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

13.190 OMR

13.190 OMR Each (ex VAT)

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1

Available in multiples of 1
113.190 OMR
Add to basket
RS Pro
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-
Current
-
-
Single
-
150 → 260V ac
-
-
-
DIN Rail
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-
-
-
-
-
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-
-
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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

12.197 OMR

12.197 OMR Each (ex VAT)

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1

Available in multiples of 1
112.197 OMR
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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

5.897 OMR

5.897 OMR Each (ex VAT)

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1

Available in multiples of 1
15.897 OMR
Add to basket
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

8.068 OMR

8.068 OMR Each (ex VAT)

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1

Available in multiples of 1
18.068 OMR
Add to basket
RS Pro
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-
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

8.009 OMR

8.009 OMR Each (ex VAT)

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1

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

10.032 OMR

10.032 OMR Each (ex VAT)

Check stock

1

Available in multiples of 1
110.032 OMR
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

12.301 OMR

12.301 OMR Each (ex VAT)

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1

Available in multiples of 1
112.301 OMR
Add to basket
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

9.205 OMR

9.205 OMR Each (ex VAT)

Check stock

1

Available in multiples of 1
19.205 OMR
Add to basket
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
Add to parts list
RS Stock No.: 122-212Brand: RS PRO

10.817 OMR

10.817 OMR Each (ex VAT)

Check stock

1

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

34.702 OMR

34.702 OMR Each (ex VAT)

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1

Available in multiples of 1
134.702 OMR
Add to basket
RS Pro
-
-
Voltage
-
-
1
-
12 → 24V dc
SPDT
-
Undervoltage
DIN Rail
-
-
-
-
-
-
-
0 → 30s
-
-
-
L
-
+60°C
1
Screw
-
17.5mm
-
66.5mm
-
-
-
-20°C
-
24V dc
-
12V dc
+60°C
89mm
17.5 x 66.5 x 89mm
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.: 102-6136Brand: RS PRO

37.861 OMR

37.861 OMR Each (ex VAT)

Check stock

1

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

62.520 OMR

62.520 OMR Each (ex VAT)

Check stock

1

Available in multiples of 1
162.520 OMR
Add to basket
RS Pro
-
-
Phase
-
-
3
-
Phase Loss, Voltage Assemmetry
SPDT
-
-
DIN Rail
-
-
-
-
-
-
-
-
-
-
-
-
-
+60°C
-
Screw
-
90mm
-
66.5mm
-
-
-
-20°C
-
-
-
-
-20 → +60°C
-
17.5 x 90 x 66.5mm
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
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RS Stock No.: 102-6135Brand: RS PRO

36.158 OMR

36.158 OMR Each (ex VAT)

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1

Available in multiples of 1
136.158 OMR
Add to basket
RS Pro
-
-
Phase, Voltage
-
-
3
-
Maximum of 280 V
SPDT
-
Undervoltage
DIN Rail
-
-
-
-
-
-
Phase Failure, Phase Sequence
100ms
48 → 63Hz
-
-
L
-
+60°C
1
Screw
-
17.5mm
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
66.5mm
-
-
-
-20°C
-
280V
-
-
+60°C
89mm
17.5 x 66.5 x 89mm
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

71.650 OMR

71.650 OMR Each (ex VAT)

Check stock

1

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

76.715 OMR

76.715 OMR Each (ex VAT)

Check stock

1

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

66.580 OMR

66.580 OMR Each (ex VAT)

Check stock

1

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

63.634 OMR

63.634 OMR Each (ex VAT)

Check stock

1

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

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