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 1261 products
RS Stock No.: 558-898Brand: RS PRO
€ 41.78
€ 41.78 Each (ex VAT)
Check stock
1
RS Pro
Voltage
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1
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CO
150 → 300V ac
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Overvoltage, Undervoltage
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DIN Rail
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Screw
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CE, cULus, DEKRA, IEC, IQNet, ISO EN 9000
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RS Stock No.: 558-901Brand: RS PRO
€ 41.44
€ 41.44 Each (ex VAT)
Check stock
1
RS Pro
Voltage
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1
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CO
150 → 300V ac
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-
Overvoltage, Undervoltage
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DIN Rail
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Screw
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CE, cULus, DEKRA, IEC, IQNet, ISO EN 9000
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RS Stock No.: 558-897Brand: RS PRO
€ 30.20
€ 30.20 Each (ex VAT)
Check stock
1
RS Pro
Voltage
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3
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CO
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Voltage Asymmetry
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DIN Rail
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Screw
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CE, cULus, DEKRA, IEC, IQNet, ISO EN 9000
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RS Stock No.: 558-892Brand: RS PRO
€ 35.53
€ 35.53 Each (ex VAT)
Check stock
1
RS Pro
Voltage
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3
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CO
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Voltage Asymmetry
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DIN Rail
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Screw
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CE, cULus, DEKRA, IEC, IQNet, ISO EN 9000
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RS Stock No.: 132-174Brand: RS PRO
€ 23.39
€ 23.39 Each (ex VAT)
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1
RS Stock No.: 132-171Brand: RS PRO
€ 21.48
€ 21.48 Each (ex VAT)
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1
RS Stock No.: 122-217Brand: RS PRO
€ 10.60
€ 10.60 Each (ex VAT)
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1
RS Stock No.: 122-216Brand: RS PRO
€ 14.55
€ 14.55 Each (ex VAT)
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1
RS Stock No.: 132-172Brand: RS PRO
€ 14.45
€ 14.45 Each (ex VAT)
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1
RS Stock No.: 132-173Brand: RS PRO
€ 18.09
€ 18.09 Each (ex VAT)
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1
RS Stock No.: 122-210Brand: RS PRO
€ 16.60
€ 16.60 Each (ex VAT)
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1
RS Stock No.: 122-215Brand: RS PRO
€ 22.18
€ 22.18 Each (ex VAT)
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1
RS Stock No.: 122-212Brand: RS PRO
€ 19.51
€ 19.51 Each (ex VAT)
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1
RS Stock No.: 102-6130Brand: RS PRO
€ 62.60
€ 62.60 Each (ex VAT)
Check stock
1
RS Pro
Voltage
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1
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SPDT
12 → 24V dc
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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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17.5 x 66.5 x 89mm
Screw
-20°C
1
-
17.5mm
-
66.5mm
+60°C
+60°C
89mm
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12V dc
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24V dc
RS Stock No.: 102-6136Brand: RS PRO
€ 68.29
€ 68.29 Each (ex VAT)
Check stock
1
RS Pro
Phase, Voltage
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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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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
17.5 x 66.5 x 89mm
Screw
-20°C
1
-
17.5mm
-
66.5mm
+60°C
+60°C
89mm
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RS Stock No.: 223-7795Brand: RS PRO
€ 112.77
€ 112.77 Each (ex VAT)
Check stock
1
RS Pro
Phase
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3
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SPDT
Phase Loss, Voltage Assemmetry
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DIN Rail
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17.5 x 90 x 66.5mm
Screw
-20°C
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90mm
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66.5mm
+60°C
-20 → +60°C
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RS Stock No.: 102-6135Brand: RS PRO
€ 65.22
€ 65.22 Each (ex VAT)
Check stock
1
RS Pro
Phase, Voltage
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3
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SPDT
Maximum of 280 V
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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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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
17.5 x 66.5 x 89mm
Screw
-20°C
1
-
17.5mm
-
66.5mm
+60°C
+60°C
89mm
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280V
RS Stock No.: 223-7789Brand: RS PRO
€ 129.23
€ 129.23 Each (ex VAT)
Check stock
1
RS Pro
Voltage
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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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36 x 90 x 67mm
Screw
-10°C
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36mm
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66.21mm
+60°C
-10 → +60°C
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RS Stock No.: 223-7790Brand: RS PRO
€ 138.37
€ 138.37 Each (ex VAT)
Check stock
1
RS Pro
Voltage
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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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36 x 90 x 67mm
Screw
-10°C
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36mm
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66.21mm
+60°C
-10 → +60°C
90mm
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RS Stock No.: 223-7788Brand: RS PRO
€ 120.09
€ 120.09 Each (ex VAT)
Check stock
1
RS Pro
Phase, Voltage
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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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45Hz
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36 x 90 x 67mm
Screw
-10°C
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36mm
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66.21mm
+60°C
-10 → +60°C
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65Hz
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