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.: 102-6130Brand: RS PRO
€ 76.23
€ 76.23 Each (Exc. Vat)
Check stock
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
€ 83.49
€ 83.49 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
€ 137.94
€ 137.94 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
€ 79.86
€ 79.86 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
€ 157.30
€ 157.30 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
€ 169.40
€ 169.40 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
€ 146.41
€ 146.41 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
-
-
-
-
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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
€ 140.36
€ 140.36 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
€ 146.41
€ 146.41 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
€ 146.41
€ 146.41 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
€ 107.69
€ 107.69 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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-
-
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-
RS Stock No.: 225-7388Brand: RS PRO
€ 142.78
€ 142.78 Each (Exc. Vat)
Check stock
1
RS Pro
Phase, Voltage
3
DPDT
243 → 540 V
-
Undervoltage
-
DIN Rail, Surface Mount
-
-
-
-
Phase Failure, Phase Sequence
0.2 → 10s
-
-
-
-
-
89 x 17.5 x 66.5mm
17.5mm
Screw
-
-20 → +60°C
-
-
-20°C
89mm
66.5mm
-
+60°C
Microprocessor Based, Detects Incorrect Phase Sequence, Phase Loss And Neutral Loss, Adjustment For Under Voltage Trip Level, Adjustment For Time Delay
-
243 V
540V
-
-
RS Stock No.: 225-7384Brand: RS PRO
€ 72.00
€ 72.00 Each (Exc. Vat)
Check stock
1
RS Pro
Phase
3
-
-
-
-
-
DIN Rail, Surface Mount
-
-
-
-
Phase Failure, Phase Sequence
-
-
-
-
-
-
-
17.5mm
Screw
-
-20 → +60°C
-
-
-20°C
66.5mm
-
-
+60°C
3 LEDs for Phase presence status, Sequence Status,
-
-
-
-
-
RS Stock No.: 225-7387Brand: RS PRO
€ 143.99
€ 143.99 Each (Exc. Vat)
Check stock
1
RS Pro
Phase, Voltage
3
DPDT
-
-
Overvoltage, Undervoltage
-
DIN Rail
-
-
-
-
Phase Failure, Phase Sequence
-
-
-
-
-
-
-
17.5mm
Screw
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
RS Stock No.: 102-6131Brand: RS PRO
€ 82.88
€ 82.88 Each (Exc. Vat)
Check stock
1
RS Pro
Voltage
1
SPDT
-
-
Overvoltage, Undervoltage
-
DIN Rail
-
-
-
-
-
0.2 → 10s
48 → 63Hz
-
-
L
-
17.5 x 66.5 x 89mm
17.5mm
Screw
63Hz
+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, Microprocessor Based Relay, Monitors Own Supply & Detects if The Supply Exceeds The Set Under or Over Voltage Trip Levels, True RMS Monitoring
-
-
-
48Hz
-
RS Stock No.: 225-7386Brand: RS PRO
€ 129.47
€ 129.47 Each (Exc. Vat)
Check stock
1
RS Stock No.: 132-174Brand: RS PRO
€ 28.56
€ 28.56 Each (Exc. Vat)
Check stock
1
RS Stock No.: 132-171Brand: RS PRO
€ 26.26
€ 26.26 Each (Exc. Vat)
Check stock
1
RS Stock No.: 122-217Brand: RS PRO
€ 12.95
€ 12.95 Each (Exc. Vat)
Check stock
1
RS Stock No.: 132-172Brand: RS PRO
€ 17.67
€ 17.67 Each (Exc. Vat)
Check stock
1
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