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
Single
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150 → 260V ac
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DIN Rail
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P.O.A.

Add to basket
RS Pro
Liquid Level
Single
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150 → 260V ac
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DIN Rail
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P.O.A.

Add to basket
RS Pro
Phase
Three
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150 → 260V ac
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DIN Rail
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RS PRO Phase Monitoring Relay, Three Phase, 380V ac, DIN Rail
RS Stock No.: 122-216Brand: RS PRO

P.O.A.

Add to basket
RS Pro
Phase
Three
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380V ac
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DIN Rail
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RS PRO Phase Monitoring Relay, Three Phase, 380V ac, DIN Rail
RS Stock No.: 132-172Brand: RS PRO

P.O.A.

Add to basket
RS Pro
Phase
Three
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380V ac
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DIN Rail
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RS PRO Phase Monitoring Relay, Three Phase, 380V ac, DIN Rail
RS Stock No.: 132-173Brand: RS PRO

P.O.A.

Add to basket
RS Pro
Phase
Three
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380V ac
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DIN Rail
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P.O.A.

Add to basket
RS Pro
Voltage
Single
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220V ac
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DIN Rail
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P.O.A.

Add to basket
RS Pro
Voltage
Single
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220V ac
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DIN Rail
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P.O.A.

Add to basket
RS Pro
Voltage
Three
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380V ac
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DIN Rail
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P.O.A.

Add to basket
RS Pro
Voltage
1
SPDT
12 → 24V dc
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Undervoltage
DIN Rail
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0 → 30s
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L
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1
Screw
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12V dc
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24V dc
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+60°C
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+60°C
66.5mm
17.5mm
17.5 x 66.5 x 89mm
-20°C
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89mm
RS PRO Phase, Voltage Monitoring Relay, 3 Phase, SPDT, DIN Rail
RS Stock No.: 102-6136Brand: RS PRO

P.O.A.

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

P.O.A.

Add to basket
RS Pro
Phase
3
SPDT
Phase Loss, Voltage Assemmetry
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DIN Rail
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Screw
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+60°C
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-20 → +60°C
66.5mm
90mm
17.5 x 90 x 66.5mm
-20°C
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P.O.A.

Add to basket
RS Pro
Phase, Voltage
3
SPDT
Maximum of 280 V
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Undervoltage
DIN Rail
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Phase Failure, Phase Sequence
100ms
48 → 63Hz
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L
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1
Screw
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280V
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+60°C
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+60°C
66.5mm
17.5mm
17.5 x 66.5 x 89mm
-20°C
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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
89mm
RS PRO Voltage Monitoring Relay, 3 Phase, DPDT, DIN Rail
RS Stock No.: 223-7789Brand: RS PRO

P.O.A.

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RS Pro
Voltage
3
DPDT
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Overvoltage Protection, Undervoltage Protection
DIN Rail
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2 → 999s
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Screw
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+60°C
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-10 → +60°C
66.21mm
36mm
36 x 90 x 67mm
-10°C
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RS PRO Voltage Monitoring Relay, 3 Phase, DPDT, DIN Rail
RS Stock No.: 223-7790Brand: RS PRO

P.O.A.

Add to basket
RS Pro
Voltage
3
DPDT
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Overvoltage Protection, Undervoltage Protection
DIN Rail
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2 → 999s
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Screw
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+60°C
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-10 → +60°C
66.21mm
36mm
36 x 90 x 67mm
-10°C
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90mm
RS PRO Phase, Voltage Monitoring Relay, 3 Phase, SPDT, DIN Rail
RS Stock No.: 223-7788Brand: RS PRO

P.O.A.

Add to basket
RS Pro
Phase, Voltage
3
SPDT
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Overvoltage Protection, Undervoltage Protection
DIN Rail
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Phase Loss, Phase Sequence, Phase Asymmetry
2 → 999s
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Screw
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65Hz
+60°C
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-10 → +60°C
66.21mm
36mm
36 x 90 x 67mm
-10°C
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45Hz
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RS PRO Phase Monitoring Relay, 3 Phase, SPDT, DIN Rail
RS Stock No.: 223-7791Brand: RS PRO

P.O.A.

Add to basket
RS Pro
Phase
3
SPDT
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Overvoltage Protection, Undervoltage Protection
DIN Rail
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Screw
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+60°C
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-20 → +60°C
66.5mm
90mm
17.5 x 90 x 66.5mm
-20°C
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P.O.A.

Add to basket
RS Pro
Voltage
1
SPDT
Maximum of 500 V
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Overvoltage, Undervoltage
DIN Rail
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0.1 → 30s
48 → 63Hz
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L
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1
Screw
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500V
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+60°C
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+60°C
66.5mm
17.5mm
17.5 x 66.5 x 89mm
-20°C
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89mm
RS PRO Current Monitoring Relay, 1 Phase, SPDT, DIN Rail
RS Stock No.: 102-6134Brand: RS PRO

P.O.A.

Add to basket
RS Pro
Current
1
SPDT
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DIN Rail
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1A
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10A
Overcurrent, Undercurrent
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0.1 → 30s
48 → 63Hz
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L
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1
Screw
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+60°C
1 → 10A
+60°C
66.5mm
17.5mm
66.5 x 17.5 x 89mm
-20°C
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Green LED Indication for Supply Status
89mm
RS PRO Phase, Voltage Monitoring Relay, 3 Phase, SPDT, DIN Rail
RS Stock No.: 102-6137Brand: RS PRO

P.O.A.

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

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