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 1195 products
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)
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1
RS Pro
Voltage
1
SPDT
12 → 24V dc
Undervoltage
-
DIN Rail
-
-
-
-
-
-
0 → 30s
-
-
-
L
-
Screw
-
-
-
12V dc
24V dc
-
+60°C
-
-20°C
-
+60°C
-
1
17.5mm
89mm
17.5 x 66.5 x 89mm
66.5mm
RS Stock No.: 102-6136Brand: RS PRO
€ 120.33
€ 120.33 Each (ex VAT)
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1
RS Pro
Phase, Voltage
3
SPDT
-
Undervoltage
-
DIN Rail
-
-
-
-
-
Phase Failure, Phase Sequence
0.2 → 10s
48 → 63Hz
-
-
L
-
Screw
-
-
-
-
-
-
+60°C
-
-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
1
17.5mm
89mm
17.5 x 66.5 x 89mm
66.5mm
RS Stock No.: 223-7795Brand: RS PRO
€ 198.71
€ 198.71 Each (ex VAT)
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1
RS Pro
Phase
3
SPDT
Phase Loss, Voltage Assemmetry
-
-
DIN Rail
-
-
-
-
-
-
-
-
-
-
-
-
Screw
-
-
-
-
-
-
-20 → +60°C
-
-20°C
-
+60°C
-
-
90mm
-
17.5 x 90 x 66.5mm
66.5mm
RS Stock No.: 102-6135Brand: RS PRO
€ 114.93
€ 114.93 Each (ex VAT)
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1
RS Pro
Phase, Voltage
3
SPDT
Maximum of 280 V
Undervoltage
-
DIN Rail
-
-
-
-
-
Phase Failure, Phase Sequence
100ms
48 → 63Hz
-
-
L
-
Screw
-
-
-
-
280V
-
+60°C
-
-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
1
17.5mm
89mm
17.5 x 66.5 x 89mm
66.5mm
RS Stock No.: 223-7789Brand: RS PRO
€ 227.72
€ 227.72 Each (ex VAT)
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1
RS Pro
Voltage
3
DPDT
-
Overvoltage Protection, Undervoltage Protection
-
DIN Rail
-
-
-
-
-
-
2 → 999s
-
-
-
-
-
Screw
-
-
-
-
-
-
-10 → +60°C
-
-10°C
-
+60°C
-
-
36mm
-
36 x 90 x 67mm
66.21mm
RS Stock No.: 223-7790Brand: RS PRO
€ 243.81
€ 243.81 Each (ex VAT)
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1
RS Pro
Voltage
3
DPDT
-
Overvoltage Protection, Undervoltage Protection
-
DIN Rail
-
-
-
-
-
-
2 → 999s
-
-
-
-
-
Screw
-
-
-
-
-
-
-10 → +60°C
-
-10°C
-
+60°C
-
-
36mm
90mm
36 x 90 x 67mm
66.21mm
RS Stock No.: 223-7788Brand: RS PRO
€ 211.63
€ 211.63 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
-
-
-
-
-
Screw
-
65Hz
-
-
-
-
-10 → +60°C
-
-10°C
45Hz
+60°C
-
-
36mm
-
36 x 90 x 67mm
66.21mm
RS Stock No.: 223-7791Brand: RS PRO
€ 202.25
€ 202.25 Each (ex VAT)
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1
RS Pro
Phase
3
SPDT
-
Overvoltage Protection, Undervoltage Protection
-
DIN Rail
-
-
-
-
-
-
-
-
-
-
-
-
Screw
-
-
-
-
-
-
-20 → +60°C
-
-20°C
-
+60°C
-
-
90mm
-
17.5 x 90 x 66.5mm
66.5mm
RS Stock No.: 102-6133Brand: RS PRO
€ 211.84
€ 211.84 Each (ex VAT)
Check stock
1
RS Pro
Voltage
1
SPDT
Maximum of 500 V
Overvoltage, Undervoltage
-
DIN Rail
-
-
-
-
-
-
0.1 → 30s
48 → 63Hz
-
-
L
-
Screw
-
-
-
-
500V
-
+60°C
-
-20°C
-
+60°C
-
1
17.5mm
89mm
17.5 x 66.5 x 89mm
66.5mm
RS Stock No.: 102-6134Brand: RS PRO
€ 211.84
€ 211.84 Each (ex VAT)
Check stock
1
RS Pro
Current
1
SPDT
-
-
-
DIN Rail
-
1A
10A
-
Overcurrent, Undercurrent
-
0.1 → 30s
48 → 63Hz
-
-
L
-
Screw
-
-
-
-
-
-
+60°C
1 → 10A
-20°C
-
+60°C
Green LED Indication for Supply Status
1
17.5mm
89mm
66.5 x 17.5 x 89mm
66.5mm
RS Stock No.: 102-6137Brand: RS PRO
€ 155.50
€ 155.50 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
-
Screw
-
-
-
-
-
-
+60°C
-
-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
1
17.5mm
89mm
17.5 x 66.5 x 89mm
66.5mm
...