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
€ 29.62
€ 29.62 Each (Exc. Vat)
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1
RS Stock No.: 132-171Brand: RS PRO
€ 27.23
€ 27.23 Each (Exc. Vat)
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1
RS Stock No.: 122-217Brand: RS PRO
€ 13.43
€ 13.43 Each (Exc. Vat)
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1
RS Stock No.: 132-172Brand: RS PRO
€ 18.32
€ 18.32 Each (Exc. Vat)
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1
RS Stock No.: 132-173Brand: RS PRO
€ 22.97
€ 22.97 Each (Exc. Vat)
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1
RS Stock No.: 122-216Brand: RS PRO
€ 18.45
€ 18.45 Each (Exc. Vat)
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1
RS Stock No.: 122-210Brand: RS PRO
€ 21.08
€ 21.08 Each (Exc. Vat)
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1
RS Stock No.: 122-215Brand: RS PRO
€ 28.11
€ 28.11 Each (Exc. Vat)
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1
RS Stock No.: 122-212Brand: RS PRO
€ 24.72
€ 24.72 Each (Exc. Vat)
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1
RS Stock No.: 102-6130Brand: RS PRO
€ 79.06
€ 79.06 Each (Exc. Vat)
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1
RS Pro
Voltage
1
SPDT
12 → 24V dc
-
Undervoltage
-
DIN Rail
-
-
-
-
-
0 → 30s
-
-
-
L
-
17.5 x 66.5 x 89mm
17.5mm
Screw
-
+60°C
-
-
-20°C
66.5mm
89mm
1
+60°C
-
-
12V dc
24V dc
-
-
RS Stock No.: 102-6136Brand: RS PRO
€ 86.60
€ 86.60 Each (Exc. Vat)
Check stock
1
RS Pro
Phase, Voltage
3
SPDT
-
-
Undervoltage
-
DIN Rail
-
-
-
-
Phase Failure, Phase Sequence
0.2 → 10s
48 → 63Hz
-
-
L
-
17.5 x 66.5 x 89mm
17.5mm
Screw
-
+60°C
-
-
-20°C
66.5mm
89mm
1
+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
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-
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-
RS Stock No.: 223-7795Brand: RS PRO
€ 143.07
€ 143.07 Each (Exc. Vat)
Check stock
1
RS Pro
Phase
3
SPDT
Phase Loss, Voltage Assemmetry
-
-
-
DIN Rail
-
-
-
-
-
-
-
-
-
-
-
17.5 x 90 x 66.5mm
90mm
Screw
-
-20 → +60°C
-
-
-20°C
66.5mm
-
-
+60°C
-
-
-
-
-
-
RS Stock No.: 102-6135Brand: RS PRO
€ 82.83
€ 82.83 Each (Exc. Vat)
Check stock
1
RS Pro
Phase, Voltage
3
SPDT
Maximum of 280 V
-
Undervoltage
-
DIN Rail
-
-
-
-
Phase Failure, Phase Sequence
100ms
48 → 63Hz
-
-
L
-
17.5 x 66.5 x 89mm
17.5mm
Screw
-
+60°C
-
-
-20°C
66.5mm
89mm
1
+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
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-
280V
-
-
RS Stock No.: 223-7789Brand: RS PRO
€ 163.15
€ 163.15 Each (Exc. Vat)
Check stock
1
RS Pro
Voltage
3
DPDT
-
-
Overvoltage Protection, Undervoltage Protection
-
DIN Rail
-
-
-
-
-
2 → 999s
-
-
-
-
-
36 x 90 x 67mm
36mm
Screw
-
-10 → +60°C
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-
-10°C
66.21mm
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-
+60°C
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-
-
-
-
-
RS Stock No.: 223-7790Brand: RS PRO
€ 175.70
€ 175.70 Each (Exc. Vat)
Check stock
1
RS Pro
Voltage
3
DPDT
-
-
Overvoltage Protection, Undervoltage Protection
-
DIN Rail
-
-
-
-
-
2 → 999s
-
-
-
-
-
36 x 90 x 67mm
36mm
Screw
-
-10 → +60°C
-
-
-10°C
66.21mm
90mm
-
+60°C
-
-
-
-
-
-
RS Stock No.: 223-7788Brand: RS PRO
€ 151.86
€ 151.86 Each (Exc. Vat)
Check stock
1
RS Pro
Phase, Voltage
3
SPDT
-
-
Overvoltage Protection, Undervoltage Protection
-
DIN Rail
-
-
-
-
Phase Loss, Phase Sequence, Phase Asymmetry
2 → 999s
-
-
-
-
-
36 x 90 x 67mm
36mm
Screw
45Hz
-10 → +60°C
-
-
-10°C
66.21mm
-
-
+60°C
-
-
-
-
65Hz
-
RS Stock No.: 223-7791Brand: RS PRO
€ 145.58
€ 145.58 Each (Exc. Vat)
Check stock
1
RS Pro
Phase
3
SPDT
-
-
Overvoltage Protection, Undervoltage Protection
-
DIN Rail
-
-
-
-
-
-
-
-
-
-
-
17.5 x 90 x 66.5mm
90mm
Screw
-
-20 → +60°C
-
-
-20°C
66.5mm
-
-
+60°C
-
-
-
-
-
-
RS Stock No.: 102-6133Brand: RS PRO
€ 151.86
€ 151.86 Each (Exc. Vat)
Check stock
1
RS Pro
Voltage
1
SPDT
Maximum of 500 V
-
Overvoltage, Undervoltage
-
DIN Rail
-
-
-
-
-
0.1 → 30s
48 → 63Hz
-
-
L
-
17.5 x 66.5 x 89mm
17.5mm
Screw
-
+60°C
-
-
-20°C
66.5mm
89mm
1
+60°C
-
-
-
500V
-
-
RS Stock No.: 102-6134Brand: RS PRO
€ 151.86
€ 151.86 Each (Exc. Vat)
Check stock
1
RS Pro
Current
1
SPDT
-
-
-
-
DIN Rail
1A
-
10A
Overcurrent, Undercurrent
-
0.1 → 30s
48 → 63Hz
-
-
L
-
66.5 x 17.5 x 89mm
17.5mm
Screw
-
+60°C
-
1 → 10A
-20°C
66.5mm
89mm
1
+60°C
Green LED Indication for Supply Status
-
-
-
-
-
RS Stock No.: 102-6137Brand: RS PRO
€ 111.70
€ 111.70 Each (Exc. Vat)
Check stock
1
RS Pro
Phase, Voltage
3
SPDT
-
-
Overvoltage, Undervoltage
-
DIN Rail
-
-
-
-
Phase Failure, Phase Sequence
0.2 → 10s
48 → 63Hz
-
-
L
-
17.5 x 66.5 x 89mm
17.5mm
Screw
-
+60°C
-
-
-20°C
66.5mm
89mm
1
+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
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