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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448.40 MOP

448.42 MOP Each (ex VAT)

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

408.93 MOP Each (ex VAT)

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

325.30 MOP Each (ex VAT)

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

227.19 MOP Each (ex VAT)

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RS Pro
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Current
Single
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150 → 260V ac
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DIN Rail
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208.60 MOP

208.62 MOP Each (ex VAT)

Add to basket
RS Pro
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Liquid Level
Single
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150 → 260V ac
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DIN Rail
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102.90 MOP

102.94 MOP Each (ex VAT)

Add to basket
RS Pro
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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

141.30 MOP

141.34 MOP Each (ex VAT)

Add to basket
RS Pro
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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

140.30 MOP

140.31 MOP Each (ex VAT)

Add to basket
RS Pro
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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

175.70 MOP

175.73 MOP Each (ex VAT)

Add to basket
RS Pro
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Phase
Three
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380V ac
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DIN Rail
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215.50 MOP

215.51 MOP Each (ex VAT)

Add to basket
RS Pro
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Voltage
Single
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220V ac
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DIN Rail
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161.30 MOP

161.28 MOP Each (ex VAT)

Add to basket
RS Pro
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Voltage
Single
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220V ac
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DIN Rail
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189.50 MOP

189.49 MOP Each (ex VAT)

Add to basket
RS Pro
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Voltage
Three
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380V ac
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DIN Rail
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663.00 MOP

663.02 MOP Each (ex VAT)

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

343.90 MOP

343.88 MOP Each (ex VAT)

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

708.40 MOP

708.37 MOP Each (ex VAT)

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

483.90 MOP

483.92 MOP Each (ex VAT)

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

541.20 MOP

541.22 MOP Each (ex VAT)

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

1,287.40 MOP

1,287.42 MOP Each (ex VAT)

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

595.30 MOP

595.32 MOP Each (ex VAT)

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

781.60 MOP

781.63 MOP Each (ex VAT)

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

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