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 1271 products
RS Stock No.: 558-898Brand: RS PRO
€ 73.61
€ 73.61 Each (ex VAT)
Check stock
1
RS Pro
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Voltage
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1
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
RS Stock No.: 558-901Brand: RS PRO
€ 73.03
€ 73.03 Each (ex VAT)
Check stock
1
RS Pro
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Voltage
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1
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
RS Stock No.: 558-897Brand: RS PRO
€ 53.20
€ 53.20 Each (ex VAT)
Check stock
1
RS Pro
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Voltage
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3
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
RS Stock No.: 558-892Brand: RS PRO
€ 62.62
€ 62.62 Each (ex VAT)
Check stock
1
RS Pro
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Voltage
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3
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
RS Stock No.: 132-174Brand: RS PRO
€ 41.22
€ 41.22 Each (ex VAT)
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1
RS Stock No.: 132-171Brand: RS PRO
€ 37.87
€ 37.87 Each (ex VAT)
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1
RS Stock No.: 122-217Brand: RS PRO
€ 18.67
€ 18.67 Each (ex VAT)
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1
RS Stock No.: 132-172Brand: RS PRO
€ 25.47
€ 25.47 Each (ex VAT)
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1
RS Stock No.: 132-173Brand: RS PRO
€ 31.87
€ 31.87 Each (ex VAT)
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1
RS Stock No.: 122-216Brand: RS PRO
€ 25.66
€ 25.66 Each (ex VAT)
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1
RS Stock No.: 122-210Brand: RS PRO
€ 29.26
€ 29.26 Each (ex VAT)
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1
RS Stock No.: 122-215Brand: RS PRO
€ 39.08
€ 39.08 Each (ex VAT)
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1
RS Stock No.: 122-212Brand: RS PRO
€ 34.39
€ 34.39 Each (ex VAT)
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1
RS Stock No.: 102-6130Brand: RS PRO
€ 110.30
€ 110.30 Each (ex VAT)
Check stock
1
RS Pro
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Voltage
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1
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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1
Screw
66.5mm
+60°C
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+60°C
89mm
17.5 x 66.5 x 89mm
17.5mm
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12V dc
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24V dc
-20°C
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RS Stock No.: 102-6136Brand: RS PRO
€ 120.33
€ 120.33 Each (ex VAT)
Check stock
1
RS Pro
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Phase, Voltage
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3
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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1
Screw
66.5mm
+60°C
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+60°C
89mm
17.5 x 66.5 x 89mm
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
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-20°C
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RS Stock No.: 223-7795Brand: RS PRO
€ 198.71
€ 198.71 Each (ex VAT)
Check stock
1
RS Pro
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Phase
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3
SPDT
Phase Loss, Voltage Assemmetry
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DIN Rail
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Screw
66.5mm
-20 → +60°C
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+60°C
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17.5 x 90 x 66.5mm
90mm
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-20°C
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RS Stock No.: 102-6135Brand: RS PRO
€ 114.93
€ 114.93 Each (ex VAT)
Check stock
1
RS Pro
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Phase, Voltage
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3
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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1
Screw
66.5mm
+60°C
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+60°C
89mm
17.5 x 66.5 x 89mm
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
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280V
-20°C
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RS Stock No.: 223-7790Brand: RS PRO
€ 243.81
€ 243.81 Each (ex VAT)
Check stock
1
RS Pro
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Voltage
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3
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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Screw
66.21mm
-10 → +60°C
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+60°C
90mm
36 x 90 x 67mm
36mm
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-10°C
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RS Stock No.: 223-7789Brand: RS PRO
€ 227.72
€ 227.72 Each (ex VAT)
Check stock
1
RS Pro
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Voltage
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3
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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Screw
66.21mm
-10 → +60°C
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+60°C
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36 x 90 x 67mm
36mm
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-10°C
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RS Stock No.: 223-7788Brand: RS PRO
€ 211.63
€ 211.63 Each (ex VAT)
Check stock
1
RS Pro
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Phase, Voltage
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3
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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Screw
66.21mm
-10 → +60°C
45Hz
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+60°C
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36 x 90 x 67mm
36mm
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65Hz
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-10°C
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