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 1264 products
RS Stock No.: 434-506Brand: RS PRO
€ 46.38
€ 46.38 Each (ex VAT)
Check stock
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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
40A
100A
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0.1 → 20s
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Error Delay Time Adjustable
-20 to 55°C
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44 x 84.5 x 75mm
CE
40 → 100A
-20°C
75mm
84.5mm
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55°C
44mm
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RS Stock No.: 558-898Brand: RS PRO
€ 41.78
€ 41.78 Each (ex VAT)
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1
RS Pro
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Voltage
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1
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150 → 300V ac
CO
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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
€ 41.44
€ 41.44 Each (ex VAT)
Check stock
1
RS Pro
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Voltage
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1
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150 → 300V ac
CO
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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.: 558-892Brand: RS PRO
€ 35.53
€ 35.53 Each (ex VAT)
Check stock
1
RS Pro
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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.: 558-897Brand: RS PRO
€ 30.20
€ 30.20 Each (ex VAT)
Check stock
1
RS Pro
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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.: 434-521Brand: RS PRO
€ 42.30
€ 42.30 Each (ex VAT)
Check stock
1
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
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DIN Rail Mount
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0.1 → 600s
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Built-In Current Transformer, Built-In Contactor
-20 to 55°C
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120V
300V
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52.9 x 67.5 x 90.3mm
CE
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-20°C
90.3mm
67.5mm
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55°C
52.9mm
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RS Stock No.: 434-520Brand: RS PRO
€ 33.65
€ 33.65 Each (ex VAT)
Check stock
1
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
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DIN Rail or Panel
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Phase Loss
0.1 → 10s
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Phase Sequence Control, With PTC, Non-Neutral
-20 to 55°C
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230V
460V
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44 x 84.5 x 75mm
CE
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-20°C
75mm
84.5mm
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55°C
44mm
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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.: 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.: 122-216Brand: RS PRO
€ 14.55
€ 14.55 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.: 122-210Brand: RS PRO
€ 16.60
€ 16.60 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
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Voltage
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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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+60°C
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12V dc
24V dc
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17.5 x 66.5 x 89mm
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-20°C
89mm
17.5mm
Screw
+60°C
66.5mm
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1
RS Stock No.: 102-6136Brand: RS PRO
€ 68.29
€ 68.29 Each (ex VAT)
Check stock
1
RS Pro
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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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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
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17.5 x 66.5 x 89mm
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-20°C
89mm
17.5mm
Screw
+60°C
66.5mm
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1
RS Stock No.: 223-7795Brand: RS PRO
€ 112.77
€ 112.77 Each (ex VAT)
Check stock
1
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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-20 → +60°C
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17.5 x 90 x 66.5mm
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-20°C
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90mm
Screw
+60°C
66.5mm
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RS Stock No.: 102-6135Brand: RS PRO
€ 65.22
€ 65.22 Each (ex VAT)
Check stock
1
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
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DIN Rail
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Phase Failure, Phase Sequence
100ms
48 → 63Hz
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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
+60°C
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280V
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17.5 x 66.5 x 89mm
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-20°C
89mm
17.5mm
Screw
+60°C
66.5mm
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1
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