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 1220 products
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.: 122-215Brand: RS PRO
€ 28.66
€ 28.66 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.: 122-212Brand: RS PRO
€ 25.22
€ 25.22 Each (ex VAT)
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RS Stock No.: 102-6130Brand: RS PRO
€ 80.89
€ 80.89 Each (ex VAT)
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1
RS Pro
Voltage
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-
-
-
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1
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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-
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L
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66.5mm
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1
-20°C
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-
17.5 x 66.5 x 89mm
17.5mm
-
89mm
-
+60°C
+60°C
Screw
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-
12V dc
24V dc
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RS Stock No.: 102-6136Brand: RS PRO
€ 88.25
€ 88.25 Each (ex VAT)
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1
RS Pro
Phase, Voltage
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-
-
-
-
3
-
SPDT
-
-
Undervoltage
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-
-
DIN Rail
-
-
-
-
Phase Failure, Phase Sequence
0.2 → 10s
48 → 63Hz
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L
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66.5mm
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1
-20°C
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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17.5 x 66.5 x 89mm
17.5mm
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89mm
-
+60°C
+60°C
Screw
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-
-
-
-
RS Stock No.: 223-7795Brand: RS PRO
€ 145.73
€ 145.73 Each (ex VAT)
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1
RS Pro
Phase
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-
-
-
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3
Phase Loss, Voltage Assemmetry
SPDT
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-
DIN Rail
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-
66.5mm
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-20°C
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17.5 x 90 x 66.5mm
90mm
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-
-20 → +60°C
+60°C
Screw
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-
-
-
RS Stock No.: 102-6135Brand: RS PRO
€ 84.29
€ 84.29 Each (ex VAT)
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1
RS Pro
Phase, Voltage
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-
-
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3
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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66.5mm
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1
-20°C
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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17.5 x 66.5 x 89mm
17.5mm
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89mm
-
+60°C
+60°C
Screw
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-
-
280V
-
RS Stock No.: 223-7789Brand: RS PRO
€ 167.02
€ 167.02 Each (ex VAT)
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1
RS Pro
Voltage
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-
-
-
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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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66.21mm
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-10°C
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36 x 90 x 67mm
36mm
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-10 → +60°C
+60°C
Screw
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-
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-
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
-
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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66.21mm
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-10°C
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36 x 90 x 67mm
36mm
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90mm
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-10 → +60°C
+60°C
Screw
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-
-
-
-
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
-
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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66.21mm
45Hz
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-10°C
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36 x 90 x 67mm
36mm
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-
-
-10 → +60°C
+60°C
Screw
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-
-
-
65Hz
RS Stock No.: 223-7791Brand: RS PRO
€ 148.31
€ 148.31 Each (ex VAT)
Check stock
1
RS Pro
Phase
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-
-
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3
-
SPDT
-
-
Overvoltage Protection, Undervoltage Protection
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-
-
DIN Rail
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66.5mm
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-20°C
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17.5 x 90 x 66.5mm
90mm
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-
-20 → +60°C
+60°C
Screw
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-
-
-
-
RS Stock No.: 102-6133Brand: RS PRO
€ 155.36
€ 155.36 Each (ex VAT)
Check stock
1
RS Pro
Voltage
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-
-
-
-
1
Maximum of 500 V
SPDT
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-
Overvoltage, Undervoltage
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-
DIN Rail
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-
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-
0.1 → 30s
48 → 63Hz
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L
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66.5mm
-
1
-20°C
-
-
17.5 x 66.5 x 89mm
17.5mm
-
89mm
-
+60°C
+60°C
Screw
-
-
-
500V
-
RS Stock No.: 102-6134Brand: RS PRO
€ 155.36
€ 155.36 Each (ex VAT)
Check stock
1
RS Pro
Current
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-
-
-
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1
-
SPDT
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-
-
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-
DIN Rail
1A
-
10A
Overcurrent, Undercurrent
-
0.1 → 30s
48 → 63Hz
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L
-
66.5mm
-
1
-20°C
Green LED Indication for Supply Status
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66.5 x 17.5 x 89mm
17.5mm
-
89mm
1 → 10A
+60°C
+60°C
Screw
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-
-
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-
RS Stock No.: 102-6137Brand: RS PRO
€ 114.05
€ 114.05 Each (ex VAT)
Check stock
1
RS Pro
Phase, Voltage
-
-
-
-
-
3
-
SPDT
-
-
Overvoltage, Undervoltage
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-
-
DIN Rail
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-
-
-
Phase Failure, Phase Sequence
0.2 → 10s
48 → 63Hz
-
-
L
-
66.5mm
-
1
-20°C
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
17.5mm
-
89mm
-
+60°C
+60°C
Screw
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-
-
-
-
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