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...

Showing 1-20 of 1200 products

Filter

Sort

Filter

Sort

Relevance
Price (high-low)
Price (low-high)
RS PRO Current Monitoring Relay, Single Phase, 150 → 260V ac, DIN Rail
RS PRO Current Monitoring Relay, Single Phase, 150 → 260V ac, DIN Rail
Add to parts list
RS Stock No.: 132-174Brand: RS PRO

AED 114.71

AED 114.71 Each (ex VAT)

Check stock

1

Available in multiples of 1
1AED 114.71
Add to basket
RS Pro
Current
Single
150 → 260V ac
-
-
-
-
DIN Rail
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
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
Add to parts list
RS Stock No.: 132-171Brand: RS PRO

AED 105.35

AED 105.35 Each (ex VAT)

Check stock

1

Available in multiples of 1
1AED 105.35
Add to basket
RS Pro
Liquid Level
Single
150 → 260V ac
-
-
-
-
DIN Rail
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
RS PRO Phase Monitoring Relay, Three Phase, 150 → 260V ac, DIN Rail
RS PRO Phase Monitoring Relay, Three Phase, 150 → 260V ac, DIN Rail
Add to parts list
RS Stock No.: 122-217Brand: RS PRO

AED 51.99

AED 51.99 Each (ex VAT)

Check stock

1

Available in multiples of 1
1AED 51.99
Add to basket
RS Pro
Phase
Three
150 → 260V ac
-
-
-
-
DIN Rail
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
RS PRO Phase Monitoring Relay, Three Phase, 380V ac, DIN Rail
RS PRO Phase Monitoring Relay, Three Phase, 380V ac, DIN Rail
Add to parts list
RS Stock No.: 132-172Brand: RS PRO

AED 70.83

AED 70.83 Each (ex VAT)

Check stock

1

Available in multiples of 1
1AED 70.83
Add to basket
RS Pro
Phase
Three
380V ac
-
-
-
-
DIN Rail
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
RS PRO Phase Monitoring Relay, Three Phase, 380V ac, DIN Rail
RS PRO Phase Monitoring Relay, Three Phase, 380V ac, DIN Rail
Add to parts list
RS Stock No.: 132-173Brand: RS PRO

AED 88.75

AED 88.75 Each (ex VAT)

Check stock

1

Available in multiples of 1
1AED 88.75
Add to basket
RS Pro
Phase
Three
380V ac
-
-
-
-
DIN Rail
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
RS PRO Phase Monitoring Relay, Three Phase, 380V ac, DIN Rail
RS PRO Phase Monitoring Relay, Three Phase, 380V ac, DIN Rail
Add to parts list
RS Stock No.: 122-216Brand: RS PRO

AED 71.39

AED 71.39 Each (ex VAT)

Check stock

1

Available in multiples of 1
1AED 71.39
Add to basket
RS Pro
Phase
Three
380V ac
-
-
-
-
DIN Rail
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
RS PRO Voltage Monitoring Relay, Single Phase, 220V ac, DIN Rail
RS PRO Voltage Monitoring Relay, Single Phase, 220V ac, DIN Rail
Add to parts list
RS Stock No.: 122-210Brand: RS PRO

AED 81.42

AED 81.42 Each (ex VAT)

Check stock

1

Available in multiples of 1
1AED 81.42
Add to basket
RS Pro
Voltage
Single
220V ac
-
-
-
-
DIN Rail
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
RS PRO Voltage Monitoring Relay, Single Phase, 220V ac, DIN Rail
RS PRO Voltage Monitoring Relay, Single Phase, 220V ac, DIN Rail
Add to parts list
RS Stock No.: 122-215Brand: RS PRO

AED 108.82

AED 108.82 Each (ex VAT)

Check stock

1

Available in multiples of 1
1AED 108.82
Add to basket
RS Pro
Voltage
Single
220V ac
-
-
-
-
DIN Rail
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
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

AED 95.70

AED 95.70 Each (ex VAT)

Check stock

1

Available in multiples of 1
1AED 95.70
Add to basket
RS Pro
Voltage
Three
380V ac
-
-
-
-
DIN Rail
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
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

AED 553.07

AED 553.07 Each (ex VAT)

Check stock

1

Available in multiples of 1
1AED 553.07
Add to basket
RS Pro
Phase
3
Phase Loss, Voltage Assemmetry
SPDT
-
-
-
DIN Rail
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-20°C
Screw
-20 → +60°C
90mm
+60°C
-
-
-
-
17.5 x 90 x 66.5mm
66.5mm
-
-
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

AED 633.82

AED 633.82 Each (ex VAT)

Check stock

1

Available in multiples of 1
1AED 633.82
Add to basket
RS Pro
Voltage
3
-
DPDT
Overvoltage Protection, Undervoltage Protection
-
-
DIN Rail
-
-
-
-
-
2 → 999s
-
-
-
-
-
-
-
-
-
-
-10°C
Screw
-10 → +60°C
36mm
+60°C
-
-
-
-
36 x 90 x 67mm
66.21mm
-
-
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

AED 678.59

AED 678.59 Each (ex VAT)

Check stock

1

Available in multiples of 1
1AED 678.59
Add to basket
RS Pro
Voltage
3
-
DPDT
Overvoltage Protection, Undervoltage Protection
-
-
DIN Rail
-
-
-
-
-
2 → 999s
-
-
-
-
-
-
-
-
-
-
-10°C
Screw
-10 → +60°C
36mm
+60°C
-
90mm
-
-
36 x 90 x 67mm
66.21mm
-
-
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

AED 589.01

AED 589.01 Each (ex VAT)

Check stock

1

Available in multiples of 1
1AED 589.01
Add to basket
RS Pro
Phase, Voltage
3
-
SPDT
Overvoltage Protection, Undervoltage Protection
-
-
DIN Rail
-
-
-
-
Phase Loss, Phase Sequence, Phase Asymmetry
2 → 999s
-
-
-
-
-
-
-
-
-
65Hz
-10°C
Screw
-10 → +60°C
36mm
+60°C
-
-
45Hz
-
36 x 90 x 67mm
66.21mm
-
-
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

AED 562.88

AED 562.88 Each (ex VAT)

Check stock

1

Available in multiples of 1
1AED 562.88
Add to basket
RS Pro
Phase
3
-
SPDT
Overvoltage Protection, Undervoltage Protection
-
-
DIN Rail
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-20°C
Screw
-20 → +60°C
90mm
+60°C
-
-
-
-
17.5 x 90 x 66.5mm
66.5mm
-
-
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
Add to parts list
RS Stock No.: 225-7388Brand: RS PRO

AED 572.59

AED 572.59 Each (ex VAT)

Check stock

1

Available in multiples of 1
1AED 572.59
Add to basket
RS Pro
Phase, Voltage
3
243 → 540 V
DPDT
Undervoltage
-
-
DIN Rail, Surface Mount
-
-
-
-
Phase Failure, Phase Sequence
0.2 → 10s
-
-
-
-
-
-
243 V
-
540V
-
-20°C
Screw
-20 → +60°C
17.5mm
+60°C
-
66.5mm
-
-
89 x 17.5 x 66.5mm
89mm
Microprocessor Based, Detects Incorrect Phase Sequence, Phase Loss And Neutral Loss, Adjustment For Under Voltage Trip Level, Adjustment For Time Delay
-
RS PRO Phase Monitoring Relay, 3 Phase, DIN Rail, Surface Mount
RS PRO Phase Monitoring Relay, 3 Phase, DIN Rail, Surface Mount
Add to parts list
RS Stock No.: 225-7384Brand: RS PRO

AED 290.23

AED 290.23 Each (ex VAT)

Check stock

1

Available in multiples of 1
1AED 290.23
Add to basket
RS Pro
Phase
3
-
-
-
-
-
DIN Rail, Surface Mount
-
-
-
-
Phase Failure, Phase Sequence
-
-
-
-
-
-
-
-
-
-
-
-20°C
Screw
-20 → +60°C
17.5mm
+60°C
-
-
-
-
-
66.5mm
3 LEDs for Phase presence status, Sequence Status,
-
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

AED 577.00

AED 577.00 Each (ex VAT)

Check stock

1

Available in multiples of 1
1AED 577.00
Add to basket
RS Pro
Phase, Voltage
3
-
DPDT
Overvoltage, Undervoltage
-
-
DIN Rail
-
-
-
-
Phase Failure, Phase Sequence
-
-
-
-
-
-
-
-
-
-
-
-
Screw
-
17.5mm
-
-
-
-
-
-
-
-
-
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

AED 519.33

AED 519.33 Each (ex VAT)

Check stock

1

Available in multiples of 1
1AED 519.33
Add to basket
RS Pro
Voltage
3
-
DPDT
Overvoltage, Undervoltage
-
-
DIN Rail
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Screw
-
17.5mm
-
-
-
-
-
-
-
-
-
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

AED 306.99

AED 306.99 Each (ex VAT)

Check stock

1

Available in multiples of 1
1AED 306.99
Add to basket
RS Pro
Voltage
1
12 → 24V dc
SPDT
Undervoltage
-
-
DIN Rail
-
-
-
-
-
0 → 30s
-
-
-
L
-
-
12V dc
-
24V dc
-
-20°C
Screw
+60°C
17.5mm
+60°C
1
89mm
-
-
17.5 x 66.5 x 89mm
66.5mm
-
-
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

AED 334.89

AED 334.89 Each (ex VAT)

Check stock

1

Available in multiples of 1
1AED 334.89
Add to basket
RS Pro
Phase, Voltage
3
-
SPDT
Undervoltage
-
-
DIN Rail
-
-
-
-
Phase Failure, Phase Sequence
0.2 → 10s
48 → 63Hz
-
-
L
-
-
-
-
-
-
-20°C
Screw
+60°C
17.5mm
+60°C
1
89mm
-
-
17.5 x 66.5 x 89mm
66.5mm
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
-

...