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

P.O.A.

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1P.O.A.
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RS Pro
Current
-
-
-
Three
-
1NO/1NC
-
-
-
-
DIN Rail Mount
-
-
40A
100A
-
-
-
0.1 → 20s
-
-
-
-
-
-20°C
CE
Error Delay Time Adjustable
44 x 84.5 x 75mm
44mm
55°C
-
75mm
-
40 → 100A
-
-
84.5mm
-
-
-
-
-20 to 55°C
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

P.O.A.

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1P.O.A.
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RS Pro
Voltage
-
-
-
Single
-
1NO
-
120 → 300V ac
-
Overvoltage
DIN Rail Mount
-
-
-
-
-
-
-
0.1 → 600s
-
-
-
-
-
-20°C
CE
Built-In Current Transformer, Built-In Contactor
52.9 x 67.5 x 90.3mm
52.9mm
55°C
-
90.3mm
300V
-
-
-
67.5mm
-
-
-
120V
-20 to 55°C
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

P.O.A.

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

EGP 2,113.05

EGP 2,113.05 Each (ex VAT)

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1EGP 2,113.05
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RS Pro
Current
-
-
-
Single
-
-
-
150 → 260V ac
-
-
DIN Rail
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-
-
-
-
-
-
-
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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

EGP 1,941.19

EGP 1,941.19 Each (ex VAT)

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1EGP 1,941.19
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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

EGP 1,049.50

EGP 1,049.50 Each (ex VAT)

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1

Available in multiples of 1
1EGP 1,049.50
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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.: 132-172Brand: RS PRO

EGP 1,402.68

EGP 1,402.68 Each (ex VAT)

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Available in multiples of 1
1EGP 1,402.68
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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

EGP 1,771.84

EGP 1,771.84 Each (ex VAT)

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1

Available in multiples of 1
1EGP 1,771.84
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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.: 122-216Brand: RS PRO

EGP 1,413.33

EGP 1,413.33 Each (ex VAT)

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1

Available in multiples of 1
1EGP 1,413.33
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RS Pro
Phase
-
-
-
Three
-
-
-
380V ac
-
-
DIN Rail
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-
-
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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.: 122-215Brand: RS PRO

EGP 2,118.82

EGP 2,118.82 Each (ex VAT)

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1

Available in multiples of 1
1EGP 2,118.82
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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

EGP 1,614.62

EGP 1,614.62 Each (ex VAT)

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1

Available in multiples of 1
1EGP 1,614.62
Add to basket
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

EGP 1,896.23

EGP 1,896.23 Each (ex VAT)

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1

Available in multiples of 1
1EGP 1,896.23
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
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RS Stock No.: 102-6130Brand: RS PRO

EGP 5,746.36

EGP 5,746.36 Each (ex VAT)

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1

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1EGP 5,746.36
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RS Pro
Voltage
-
-
-
1
-
SPDT
-
12 → 24V dc
-
Undervoltage
DIN Rail
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-
-
-
-
-
-
0 → 30s
-
-
-
L
-
-20°C
-
-
17.5 x 66.5 x 89mm
66.5mm
+60°C
Screw
89mm
24V dc
-
1
-
17.5mm
-
-
-
12V dc
+60°C
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

EGP 6,266.23

EGP 6,266.23 Each (ex VAT)

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1

Available in multiples of 1
1EGP 6,266.23
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RS Pro
Phase, Voltage
-
-
-
3
-
SPDT
-
-
-
Undervoltage
DIN Rail
-
-
-
-
-
-
Phase Failure, Phase Sequence
0.2 → 10s
48 → 63Hz
-
-
L
-
-20°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
17.5 x 66.5 x 89mm
66.5mm
+60°C
Screw
89mm
-
-
1
-
17.5mm
-
-
-
-
+60°C
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

EGP 10,309.22

EGP 10,309.22 Each (ex VAT)

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1

Available in multiples of 1
1EGP 10,309.22
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RS Pro
Phase
-
-
-
3
-
SPDT
-
Phase Loss, Voltage Assemmetry
-
-
DIN Rail
-
-
-
-
-
-
-
-
-
-
-
-
-
-20°C
-
-
17.5 x 90 x 66.5mm
66.5mm
+60°C
Screw
-
-
-
-
-
90mm
-
-
-
-
-20 → +60°C
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

EGP 5,991.43

EGP 5,991.43 Each (ex VAT)

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1

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1EGP 5,991.43
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RS Pro
Phase, Voltage
-
-
-
3
-
SPDT
-
Maximum of 280 V
-
Undervoltage
DIN Rail
-
-
-
-
-
-
Phase Failure, Phase Sequence
100ms
48 → 63Hz
-
-
L
-
-20°C
-
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
17.5 x 66.5 x 89mm
66.5mm
+60°C
Screw
89mm
280V
-
1
-
17.5mm
-
-
-
-
+60°C
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

EGP 11,860.84

EGP 11,860.84 Each (ex VAT)

Check stock

1

Available in multiples of 1
1EGP 11,860.84
Add to basket
RS Pro
Voltage
-
-
-
3
-
DPDT
-
-
-
Overvoltage Protection, Undervoltage Protection
DIN Rail
-
-
-
-
-
-
-
2 → 999s
-
-
-
-
-
-10°C
-
-
36 x 90 x 67mm
66.21mm
+60°C
Screw
-
-
-
-
-
36mm
-
-
-
-
-10 → +60°C
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

EGP 12,704.61

EGP 12,704.61 Each (ex VAT)

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1

Available in multiples of 1
1EGP 12,704.61
Add to basket
RS Pro
Voltage
-
-
-
3
-
DPDT
-
-
-
Overvoltage Protection, Undervoltage Protection
DIN Rail
-
-
-
-
-
-
-
2 → 999s
-
-
-
-
-
-10°C
-
-
36 x 90 x 67mm
66.21mm
+60°C
Screw
90mm
-
-
-
-
36mm
-
-
-
-
-10 → +60°C
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

EGP 11,025.35

EGP 11,025.35 Each (ex VAT)

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1

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1EGP 11,025.35
Add to basket
RS Pro
Phase, Voltage
-
-
-
3
-
SPDT
-
-
-
Overvoltage Protection, Undervoltage Protection
DIN Rail
-
-
-
-
-
-
Phase Loss, Phase Sequence, Phase Asymmetry
2 → 999s
-
-
-
-
-
-10°C
-
-
36 x 90 x 67mm
66.21mm
+60°C
Screw
-
-
-
-
45Hz
36mm
-
65Hz
-
-
-10 → +60°C
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

EGP 10,495.72

EGP 10,495.72 Each (ex VAT)

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1

Available in multiples of 1
1EGP 10,495.72
Add to basket
RS Pro
Phase
-
-
-
3
-
SPDT
-
-
-
Overvoltage Protection, Undervoltage Protection
DIN Rail
-
-
-
-
-
-
-
-
-
-
-
-
-
-20°C
-
-
17.5 x 90 x 66.5mm
66.5mm
+60°C
Screw
-
-
-
-
-
90mm
-
-
-
-
-20 → +60°C

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