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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P.O.A.

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

P.O.A.

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

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

P.O.A.

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RS Pro
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Current
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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
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Liquid Level
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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
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Phase
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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
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Phase
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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
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Phase
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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
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Phase
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Three
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380V ac
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DIN Rail
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P.O.A.

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

P.O.A.

Add to basket
RS Pro
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Phase, Voltage
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3
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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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Screw
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1
+60°C
89mm
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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
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+60°C
-20°C
17.5 x 66.5 x 89mm
66.5mm
17.5mm

P.O.A.

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

P.O.A.

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

P.O.A.

Add to basket
RS Pro
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Voltage
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3
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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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-10 → +60°C
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+60°C
-10°C
36 x 90 x 67mm
66.21mm
36mm
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
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Voltage
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3
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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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-10 → +60°C
90mm
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+60°C
-10°C
36 x 90 x 67mm
66.21mm
36mm
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
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Phase, Voltage
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3
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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
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-10 → +60°C
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45Hz
+60°C
-10°C
36 x 90 x 67mm
66.21mm
36mm
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
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Phase
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3
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SPDT
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Overvoltage Protection, Undervoltage Protection
DIN Rail
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Screw
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-20 → +60°C
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+60°C
-20°C
17.5 x 90 x 66.5mm
66.5mm
90mm

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