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
€ 53.97
€ 53.97 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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CE, cULus, DEKRA, IEC, IQNet, ISO EN 9000
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Screw
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RS Stock No.: 558-901Brand: RS PRO
€ 53.55
€ 53.55 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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CE, cULus, DEKRA, IEC, IQNet, ISO EN 9000
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Screw
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RS Stock No.: 558-897Brand: RS PRO
€ 39.02
€ 39.02 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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CE, cULus, DEKRA, IEC, IQNet, ISO EN 9000
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Screw
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RS Stock No.: 558-892Brand: RS PRO
€ 45.93
€ 45.93 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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CE, cULus, DEKRA, IEC, IQNet, ISO EN 9000
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Screw
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RS Stock No.: 132-174Brand: RS PRO
€ 30.21
€ 30.21 Each (ex VAT)
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1
RS Stock No.: 132-171Brand: RS PRO
€ 27.75
€ 27.75 Each (ex VAT)
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1
RS Stock No.: 122-217Brand: RS PRO
€ 13.71
€ 13.71 Each (ex VAT)
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1
RS Stock No.: 132-172Brand: RS PRO
€ 18.68
€ 18.68 Each (ex VAT)
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1
RS Stock No.: 132-173Brand: RS PRO
€ 23.38
€ 23.38 Each (ex VAT)
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1
RS Stock No.: 122-216Brand: RS PRO
€ 18.80
€ 18.80 Each (ex VAT)
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1
RS Stock No.: 122-210Brand: RS PRO
€ 21.45
€ 21.45 Each (ex VAT)
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1
RS Stock No.: 122-215Brand: RS PRO
€ 28.66
€ 28.66 Each (ex VAT)
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1
RS Stock No.: 122-212Brand: RS PRO
€ 25.22
€ 25.22 Each (ex VAT)
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1
RS Stock No.: 102-6130Brand: RS PRO
€ 80.89
€ 80.89 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
+60°C
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-20°C
Screw
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17.5 x 66.5 x 89mm
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12V dc
24V dc
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89mm
66.5mm
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+60°C
1
17.5mm
RS Stock No.: 102-6136Brand: RS PRO
€ 88.25
€ 88.25 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
+60°C
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-20°C
Screw
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17.5 x 66.5 x 89mm
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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
+60°C
1
17.5mm
RS Stock No.: 223-7795Brand: RS PRO
€ 145.73
€ 145.73 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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+60°C
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-20°C
Screw
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17.5 x 90 x 66.5mm
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66.5mm
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-20 → +60°C
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90mm
RS Stock No.: 102-6135Brand: RS PRO
€ 84.29
€ 84.29 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
+60°C
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-20°C
Screw
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17.5 x 66.5 x 89mm
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280V
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89mm
66.5mm
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
+60°C
1
17.5mm
RS Stock No.: 223-7789Brand: RS PRO
€ 167.02
€ 167.02 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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+60°C
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-10°C
Screw
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36 x 90 x 67mm
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66.21mm
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-10 → +60°C
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36mm
RS Stock No.: 223-7790Brand: RS PRO
€ 178.82
€ 178.82 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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+60°C
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-10°C
Screw
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36 x 90 x 67mm
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90mm
66.21mm
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-10 → +60°C
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36mm
RS Stock No.: 223-7788Brand: RS PRO
€ 155.19
€ 155.19 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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+60°C
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45Hz
-10°C
Screw
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36 x 90 x 67mm
65Hz
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66.21mm
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-10 → +60°C
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36mm
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