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 1246 products
RS Stock No.: 132-174Brand: RS PRO
€ 30.53
€ 30.53 Each (ex VAT)
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1
RS Stock No.: 132-171Brand: RS PRO
€ 28.04
€ 28.04 Each (ex VAT)
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1
RS Stock No.: 122-217Brand: RS PRO
€ 13.83
€ 13.83 Each (ex VAT)
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1
RS Stock No.: 132-172Brand: RS PRO
€ 18.87
€ 18.87 Each (ex VAT)
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1
RS Stock No.: 132-173Brand: RS PRO
€ 23.62
€ 23.62 Each (ex VAT)
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1
RS Stock No.: 122-216Brand: RS PRO
€ 19.01
€ 19.01 Each (ex VAT)
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1
RS Stock No.: 122-210Brand: RS PRO
€ 21.66
€ 21.66 Each (ex VAT)
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1
RS Stock No.: 122-215Brand: RS PRO
€ 28.95
€ 28.95 Each (ex VAT)
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1
RS Stock No.: 122-212Brand: RS PRO
€ 25.46
€ 25.46 Each (ex VAT)
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1
RS Stock No.: 102-6130Brand: RS PRO
€ 81.70
€ 81.70 Each (ex VAT)
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1
RS Pro
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Voltage
-
-
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1
SPDT
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12 → 24V dc
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Undervoltage
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-
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DIN Rail
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-
-
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0 → 30s
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L
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+60°C
17.5 x 66.5 x 89mm
1
+60°C
66.5mm
-
-
89mm
Screw
-20°C
17.5mm
24V dc
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12V dc
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RS Stock No.: 102-6136Brand: RS PRO
€ 89.14
€ 89.14 Each (ex VAT)
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1
RS Pro
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Phase, Voltage
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-
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3
SPDT
-
-
-
Undervoltage
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-
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DIN Rail
-
-
-
-
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Phase Failure, Phase Sequence
0.2 → 10s
48 → 63Hz
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L
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+60°C
17.5 x 66.5 x 89mm
1
+60°C
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
89mm
Screw
-20°C
17.5mm
-
-
-
-
RS Stock No.: 223-7795Brand: RS PRO
€ 147.19
€ 147.19 Each (ex VAT)
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1
RS Pro
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Phase
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-
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3
SPDT
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Phase Loss, Voltage Assemmetry
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DIN Rail
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+60°C
17.5 x 90 x 66.5mm
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-20 → +60°C
66.5mm
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-
Screw
-20°C
90mm
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-
-
-
RS Stock No.: 102-6135Brand: RS PRO
€ 85.13
€ 85.13 Each (ex VAT)
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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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L
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+60°C
17.5 x 66.5 x 89mm
1
+60°C
66.5mm
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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
89mm
Screw
-20°C
17.5mm
280V
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-
-
RS Stock No.: 223-7790Brand: RS PRO
€ 180.60
€ 180.60 Each (ex VAT)
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1
RS Pro
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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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+60°C
36 x 90 x 67mm
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-10 → +60°C
66.21mm
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90mm
Screw
-10°C
36mm
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-
RS Stock No.: 223-7789Brand: RS PRO
€ 168.69
€ 168.69 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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-
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DIN Rail
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2 → 999s
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+60°C
36 x 90 x 67mm
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-10 → +60°C
66.21mm
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-
-
Screw
-10°C
36mm
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-
RS Stock No.: 223-7788Brand: RS PRO
€ 156.75
€ 156.75 Each (ex VAT)
Check stock
1
RS Pro
-
Phase, Voltage
-
-
-
3
SPDT
-
-
-
Overvoltage Protection, Undervoltage Protection
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-
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DIN Rail
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Phase Loss, Phase Sequence, Phase Asymmetry
2 → 999s
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45Hz
+60°C
36 x 90 x 67mm
-
-10 → +60°C
66.21mm
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-
Screw
-10°C
36mm
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-
-
65Hz
RS Stock No.: 223-7791Brand: RS PRO
€ 149.80
€ 149.80 Each (ex VAT)
Check stock
1
RS Pro
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Phase
-
-
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3
SPDT
-
-
-
Overvoltage Protection, Undervoltage Protection
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DIN Rail
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+60°C
17.5 x 90 x 66.5mm
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-20 → +60°C
66.5mm
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-
Screw
-20°C
90mm
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-
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-
RS Stock No.: 102-6133Brand: RS PRO
€ 156.92
€ 156.92 Each (ex VAT)
Check stock
1
RS Pro
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Voltage
-
-
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1
SPDT
-
Maximum of 500 V
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Overvoltage, Undervoltage
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DIN Rail
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0.1 → 30s
48 → 63Hz
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L
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-
+60°C
17.5 x 66.5 x 89mm
1
+60°C
66.5mm
-
-
89mm
Screw
-20°C
17.5mm
500V
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-
-
RS Stock No.: 102-6134Brand: RS PRO
€ 156.92
€ 156.92 Each (ex VAT)
Check stock
1
RS Pro
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Current
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1
SPDT
-
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DIN Rail
1A
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10A
Overcurrent, Undercurrent
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-
0.1 → 30s
48 → 63Hz
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L
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-
+60°C
66.5 x 17.5 x 89mm
1
+60°C
66.5mm
-
Green LED Indication for Supply Status
89mm
Screw
-20°C
17.5mm
-
-
-
-
RS Stock No.: 102-6137Brand: RS PRO
€ 115.17
€ 115.17 Each (ex VAT)
Check stock
1
RS Pro
-
Phase, Voltage
-
-
-
3
SPDT
-
-
-
Overvoltage, Undervoltage
-
-
-
DIN Rail
-
-
-
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Phase Failure, Phase Sequence
0.2 → 10s
48 → 63Hz
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L
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-
+60°C
17.5 x 66.5 x 89mm
1
+60°C
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
89mm
Screw
-20°C
17.5mm
-
-
-
-
...