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 1288 products
RS Stock No.: 132-174Brand: RS PRO
13.190 OMR
13.190 OMR Each (ex VAT)
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1
RS Stock No.: 132-171Brand: RS PRO
12.197 OMR
12.197 OMR Each (ex VAT)
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1
RS Stock No.: 122-217Brand: RS PRO
5.897 OMR
5.897 OMR Each (ex VAT)
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1
RS Stock No.: 122-216Brand: RS PRO
8.068 OMR
8.068 OMR Each (ex VAT)
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1
RS Stock No.: 132-172Brand: RS PRO
8.009 OMR
8.009 OMR Each (ex VAT)
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1
RS Stock No.: 132-173Brand: RS PRO
10.032 OMR
10.032 OMR Each (ex VAT)
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1
RS Stock No.: 122-215Brand: RS PRO
12.301 OMR
12.301 OMR Each (ex VAT)
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1
RS Stock No.: 122-210Brand: RS PRO
9.205 OMR
9.205 OMR Each (ex VAT)
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1
RS Stock No.: 122-212Brand: RS PRO
10.817 OMR
10.817 OMR Each (ex VAT)
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1
RS Stock No.: 102-6130Brand: RS PRO
34.702 OMR
34.702 OMR Each (ex VAT)
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1
RS Pro
Voltage
1
12 → 24V dc
SPDT
-
Undervoltage
DIN Rail
-
-
-
-
-
-
0 → 30s
-
-
-
L
-
-20°C
+60°C
-
66.5mm
89mm
-
-
12V dc
-
24V dc
17.5mm
17.5 x 66.5 x 89mm
-
-
1
Screw
+60°C
-
RS Stock No.: 102-6136Brand: RS PRO
37.861 OMR
37.861 OMR Each (ex VAT)
Check stock
1
RS Pro
Phase, Voltage
3
-
SPDT
-
Undervoltage
DIN Rail
-
-
-
-
-
Phase Failure, Phase Sequence
0.2 → 10s
48 → 63Hz
-
-
L
-
-20°C
+60°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
66.5mm
89mm
-
-
-
-
-
17.5mm
17.5 x 66.5 x 89mm
-
-
1
Screw
+60°C
-
RS Stock No.: 223-7795Brand: RS PRO
62.520 OMR
62.520 OMR Each (ex VAT)
Check stock
1
RS Pro
Phase
3
Phase Loss, Voltage Assemmetry
SPDT
-
-
DIN Rail
-
-
-
-
-
-
-
-
-
-
-
-
-20°C
+60°C
-
66.5mm
-
-
-
-
-
-
90mm
17.5 x 90 x 66.5mm
-
-
-
Screw
-20 → +60°C
-
RS Stock No.: 102-6135Brand: RS PRO
36.158 OMR
36.158 OMR Each (ex VAT)
Check stock
1
RS Pro
Phase, Voltage
3
Maximum of 280 V
SPDT
-
Undervoltage
DIN Rail
-
-
-
-
-
Phase Failure, Phase Sequence
100ms
48 → 63Hz
-
-
L
-
-20°C
+60°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
66.5mm
89mm
-
-
-
-
280V
17.5mm
17.5 x 66.5 x 89mm
-
-
1
Screw
+60°C
-
RS Stock No.: 223-7789Brand: RS PRO
71.650 OMR
71.650 OMR Each (ex VAT)
Check stock
1
RS Pro
Voltage
3
-
DPDT
-
Overvoltage Protection, Undervoltage Protection
DIN Rail
-
-
-
-
-
-
2 → 999s
-
-
-
-
-
-10°C
+60°C
-
66.21mm
-
-
-
-
-
-
36mm
36 x 90 x 67mm
-
-
-
Screw
-10 → +60°C
-
RS Stock No.: 223-7790Brand: RS PRO
76.715 OMR
76.715 OMR Each (ex VAT)
Check stock
1
RS Pro
Voltage
3
-
DPDT
-
Overvoltage Protection, Undervoltage Protection
DIN Rail
-
-
-
-
-
-
2 → 999s
-
-
-
-
-
-10°C
+60°C
-
66.21mm
90mm
-
-
-
-
-
36mm
36 x 90 x 67mm
-
-
-
Screw
-10 → +60°C
-
RS Stock No.: 223-7788Brand: RS PRO
66.580 OMR
66.580 OMR Each (ex VAT)
Check stock
1
RS Pro
Phase, Voltage
3
-
SPDT
-
Overvoltage Protection, Undervoltage Protection
DIN Rail
-
-
-
-
-
Phase Loss, Phase Sequence, Phase Asymmetry
2 → 999s
-
-
-
-
-
-10°C
+60°C
-
66.21mm
-
65Hz
-
-
-
-
36mm
36 x 90 x 67mm
-
45Hz
-
Screw
-10 → +60°C
-
RS Stock No.: 223-7791Brand: RS PRO
63.634 OMR
63.634 OMR Each (ex VAT)
Check stock
1
RS Pro
Phase
3
-
SPDT
-
Overvoltage Protection, Undervoltage Protection
DIN Rail
-
-
-
-
-
-
-
-
-
-
-
-
-20°C
+60°C
-
66.5mm
-
-
-
-
-
-
90mm
17.5 x 90 x 66.5mm
-
-
-
Screw
-20 → +60°C
-
RS Stock No.: 102-6133Brand: RS PRO
66.650 OMR
66.650 OMR Each (ex VAT)
Check stock
1
RS Pro
Voltage
1
Maximum of 500 V
SPDT
-
Overvoltage, Undervoltage
DIN Rail
-
-
-
-
-
-
0.1 → 30s
48 → 63Hz
-
-
L
-
-20°C
+60°C
-
66.5mm
89mm
-
-
-
-
500V
17.5mm
17.5 x 66.5 x 89mm
-
-
1
Screw
+60°C
-
RS Stock No.: 102-6134Brand: RS PRO
66.650 OMR
66.650 OMR Each (ex VAT)
Check stock
1
RS Pro
Current
1
-
SPDT
-
-
DIN Rail
-
1A
-
10A
Overcurrent, Undercurrent
-
0.1 → 30s
48 → 63Hz
-
-
L
-
-20°C
+60°C
Green LED Indication for Supply Status
66.5mm
89mm
-
-
-
-
-
17.5mm
66.5 x 17.5 x 89mm
1 → 10A
-
1
Screw
+60°C
-
RS Stock No.: 102-6137Brand: RS PRO
48.920 OMR
48.920 OMR Each (ex VAT)
Check stock
1
RS Pro
Phase, Voltage
3
-
SPDT
-
Overvoltage, Undervoltage
DIN Rail
-
-
-
-
-
Phase Failure, Phase Sequence
0.2 → 10s
48 → 63Hz
-
-
L
-
-20°C
+60°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
66.5mm
89mm
-
-
-
-
-
17.5mm
17.5 x 66.5 x 89mm
-
-
1
Screw
+60°C
-
...