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

448.40 MOP

448.42 MOP Each (ex VAT)

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1

Available in multiples of 1
1448.42 MOP
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RS Pro
Current
-
-
Three
-
-
-
1NO/1NC
-
-
-
-
DIN Rail Mount
-
40A
100A
-
-
-
0.1 → 20s
-
-
-
-
-
-20°C
55°C
44mm
75mm
Error Delay Time Adjustable
-
-
-
-
-
-20 to 55°C
CE
84.5mm
40 → 100A
44 x 84.5 x 75mm
-
-
RS PRO Phase, Voltage Monitoring Relay, Single Phase, CO, 270 → 370, 410 → 510V ac, DIN Rail
RS PRO Phase, Voltage Monitoring Relay, Single Phase, CO, 270 → 370, 410 → 510V ac, DIN Rail
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RS Stock No.: 558-898Brand: RS PRO

368.00 MOP

367.95 MOP Each (ex VAT)

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1

Available in multiples of 1
1367.95 MOP
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RS Pro
Voltage
-
-
1
-
-
-
CO
150 → 300V ac
Overvoltage, Undervoltage
-
-
DIN Rail
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-
-
-
-
-
-
-
-
-
-
Screw
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-
-
-
-
-
-
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-
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CE, cULus, DEKRA, IEC, IQNet, ISO EN 9000
-
-
-
-
-
RS PRO Phase, Voltage Monitoring Relay, Three Phase, CO, 150 → 210, 240 → 300V ac, DIN Rail
RS PRO Phase, Voltage Monitoring Relay, Three Phase, CO, 150 → 210, 240 → 300V ac, DIN Rail
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RS Stock No.: 558-901Brand: RS PRO

365.10 MOP

365.10 MOP Each (ex VAT)

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1

Available in multiples of 1
1365.10 MOP
Add to basket
RS Pro
Voltage
-
-
1
-
-
-
CO
150 → 300V ac
Overvoltage, Undervoltage
-
-
DIN Rail
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-
-
-
-
-
-
-
-
-
-
Screw
-
-
-
-
-
-
-
-
-
-
-
CE, cULus, DEKRA, IEC, IQNet, ISO EN 9000
-
-
-
-
-
RS PRO Phase, Voltage Monitoring Relay, Three Phase, CO, DIN Rail
RS PRO Phase, Voltage Monitoring Relay, Three Phase, CO, DIN Rail
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RS Stock No.: 558-892Brand: RS PRO

313.00 MOP

312.95 MOP Each (ex VAT)

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1

Available in multiples of 1
1312.95 MOP
Add to basket
RS Pro
Voltage
-
-
3
-
-
-
CO
-
Voltage Asymmetry
-
-
DIN Rail
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-
-
-
-
-
-
-
-
-
-
Screw
-
-
-
-
-
-
-
-
-
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-
CE, cULus, DEKRA, IEC, IQNet, ISO EN 9000
-
-
-
-
-
RS PRO Phase, Voltage Monitoring Relay, Three Phase, CO, DIN Rail
RS PRO Phase, Voltage Monitoring Relay, Three Phase, CO, DIN Rail
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RS Stock No.: 558-897Brand: RS PRO

266.00 MOP

266.00 MOP Each (ex VAT)

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1

Available in multiples of 1
1266.00 MOP
Add to basket
RS Pro
Voltage
-
-
3
-
-
-
CO
-
Voltage Asymmetry
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-
DIN Rail
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-
-
-
-
-
-
-
-
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-
Screw
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-
-
-
-
-
-
-
-
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-
CE, cULus, DEKRA, IEC, IQNet, ISO EN 9000
-
-
-
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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

408.90 MOP

408.93 MOP Each (ex VAT)

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1

Available in multiples of 1
1408.93 MOP
Add to basket
RS Pro
Voltage
-
-
Single
-
-
-
1NO
120 → 300V ac
Overvoltage
-
-
DIN Rail Mount
-
-
-
-
-
-
0.1 → 600s
-
-
-
-
-
-20°C
55°C
52.9mm
90.3mm
Built-In Current Transformer, Built-In Contactor
-
-
120V
300V
-
-20 to 55°C
CE
67.5mm
-
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

325.30 MOP

325.30 MOP Each (ex VAT)

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1

Available in multiples of 1
1325.30 MOP
Add to basket
RS Pro
Voltage
-
-
Three
-
-
-
1NO/1NC
230 → 460V ac
Overvoltage
-
-
DIN Rail or Panel
-
-
-
-
-
Phase Loss
0.1 → 10s
-
-
-
-
-
-20°C
55°C
44mm
75mm
Phase Sequence Control, With PTC, Non-Neutral
-
-
230V
460V
-
-20 to 55°C
CE
84.5mm
-
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

227.20 MOP

227.19 MOP Each (ex VAT)

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1

Available in multiples of 1
1227.19 MOP
Add to basket
RS Pro
Current
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-
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

208.60 MOP

208.62 MOP Each (ex VAT)

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1

Available in multiples of 1
1208.62 MOP
Add to basket
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

102.90 MOP

102.94 MOP Each (ex VAT)

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1

Available in multiples of 1
1102.94 MOP
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

141.30 MOP

141.34 MOP Each (ex VAT)

Check stock

1

Available in multiples of 1
1141.34 MOP
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

140.30 MOP

140.31 MOP Each (ex VAT)

Check stock

1

Available in multiples of 1
1140.31 MOP
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

175.70 MOP

175.73 MOP Each (ex VAT)

Check stock

1

Available in multiples of 1
1175.73 MOP
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

215.50 MOP

215.51 MOP Each (ex VAT)

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1

Available in multiples of 1
1215.51 MOP
Add to basket
RS Pro
Voltage
-
-
Single
-
-
-
-
220V 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.: 122-210Brand: RS PRO

161.30 MOP

161.28 MOP Each (ex VAT)

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1

Available in multiples of 1
1161.28 MOP
Add to basket
RS Pro
Voltage
-
-
Single
-
-
-
-
220V ac
-
-
-
DIN Rail
-
-
-
-
-
-
-
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-
-
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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

189.50 MOP

189.49 MOP Each (ex VAT)

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1

Available in multiples of 1
1189.49 MOP
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

629.50 MOP

629.53 MOP Each (ex VAT)

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1

Available in multiples of 1
1629.53 MOP
Add to basket
RS Pro
Voltage
-
-
1
-
-
-
SPDT
12 → 24V dc
Undervoltage
-
-
DIN Rail
-
-
-
-
-
-
0 → 30s
-
-
-
L
Screw
-20°C
+60°C
66.5mm
89mm
-
-
-
12V dc
24V dc
-
+60°C
-
17.5mm
-
17.5 x 66.5 x 89mm
1
-
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

343.90 MOP

343.88 MOP Each (ex VAT)

Check stock

1

Available in multiples of 1
1343.88 MOP
Add to basket
RS Pro
Phase, Voltage
-
-
3
-
-
-
SPDT
-
Undervoltage
-
-
DIN Rail
-
-
-
-
-
Phase Failure, Phase Sequence
0.2 → 10s
48 → 63Hz
-
-
L
Screw
-20°C
+60°C
66.5mm
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
-
-
-
-
-
+60°C
-
17.5mm
-
17.5 x 66.5 x 89mm
1
-
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.: 223-7792Brand: RS PRO

533.50 MOP

533.49 MOP Each (ex VAT)

Check stock

1

Available in multiples of 1
1533.49 MOP
Add to basket
RS Pro
Phase
-
-
3
-
-
-
SPDT
-
Overvoltage Protection, Undervoltage Protection
-
-
DIN Rail
-
-
-
-
-
-
-
-
-
-
-
Screw
-20°C
+60°C
66.5mm
-
-
-
-
-
-
-
-20 → +60°C
-
90mm
-
17.5 x 90 x 66.5mm
-
-
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
Add to parts list
RS Stock No.: 223-7795Brand: RS PRO

708.40 MOP

708.37 MOP Each (ex VAT)

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1

Available in multiples of 1
1708.37 MOP
Add to basket
RS Pro
Phase
-
-
3
-
-
-
SPDT
Phase Loss, Voltage Assemmetry
-
-
-
DIN Rail
-
-
-
-
-
-
-
-
-
-
-
Screw
-20°C
+60°C
66.5mm
-
-
-
-
-
-
-
-20 → +60°C
-
90mm
-
17.5 x 90 x 66.5mm
-
-

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