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 1257 products
RS Stock No.: 102-6130Brand: RS PRO
€ 78.65
€ 78.65 Each (Exc. Vat)
Check stock
1
RS Pro
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Voltage
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1
-
12 → 24V dc
SPDT
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Undervoltage
-
-
DIN Rail
-
-
-
-
-
0 → 30s
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-
-
L
17.5 x 66.5 x 89mm
66.5mm
-
Screw
17.5mm
+60°C
-20°C
+60°C
-
1
-
89mm
24V dc
12V dc
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-
-
-
RS Stock No.: 102-6136Brand: RS PRO
€ 85.91
€ 85.91 Each (Exc. Vat)
Check stock
1
RS Pro
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Phase, Voltage
-
-
3
-
-
SPDT
-
Undervoltage
-
-
DIN Rail
-
-
-
-
Phase Failure, Phase Sequence
0.2 → 10s
48 → 63Hz
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-
L
17.5 x 66.5 x 89mm
66.5mm
-
Screw
17.5mm
+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
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89mm
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-
-
-
-
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RS Stock No.: 223-7792Brand: RS PRO
€ 123.42
€ 123.42 Each (Exc. Vat)
Check stock
1
RS Pro
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Phase
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-
3
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-
SPDT
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Overvoltage Protection, Undervoltage Protection
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-
DIN Rail
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-
-
-
-
-
-
-
-
-
17.5 x 90 x 66.5mm
66.5mm
-
Screw
90mm
+60°C
-20°C
-20 → +60°C
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-
-
-
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RS Stock No.: 223-7795Brand: RS PRO
€ 141.57
€ 141.57 Each (Exc. Vat)
Check stock
1
RS Pro
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Phase
-
-
3
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Phase Loss, Voltage Assemmetry
SPDT
-
-
-
-
DIN Rail
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-
-
-
-
-
-
-
-
-
17.5 x 90 x 66.5mm
66.5mm
-
Screw
90mm
+60°C
-20°C
-20 → +60°C
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-
-
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-
-
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RS Stock No.: 102-6135Brand: RS PRO
€ 81.68
€ 81.68 Each (Exc. Vat)
Check stock
1
RS Pro
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Phase, Voltage
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3
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Maximum of 280 V
SPDT
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Undervoltage
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-
DIN Rail
-
-
-
-
Phase Failure, Phase Sequence
100ms
48 → 63Hz
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-
L
17.5 x 66.5 x 89mm
66.5mm
-
Screw
17.5mm
+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
-
89mm
280V
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-
-
-
-
RS Stock No.: 223-7789Brand: RS PRO
€ 162.14
€ 162.14 Each (Exc. Vat)
Check stock
1
RS Pro
-
Voltage
-
-
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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-
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-
36 x 90 x 67mm
66.21mm
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Screw
36mm
+60°C
-10°C
-10 → +60°C
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RS Stock No.: 223-7790Brand: RS PRO
€ 174.24
€ 174.24 Each (Exc. Vat)
Check stock
1
RS Pro
-
Voltage
-
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3
-
-
DPDT
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Overvoltage Protection, Undervoltage Protection
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-
DIN Rail
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-
-
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2 → 999s
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-
-
-
36 x 90 x 67mm
66.21mm
-
Screw
36mm
+60°C
-10°C
-10 → +60°C
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-
90mm
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-
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RS Stock No.: 223-7788Brand: RS PRO
€ 151.25
€ 151.25 Each (Exc. Vat)
Check stock
1
RS Pro
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Phase, Voltage
-
-
3
-
-
SPDT
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Overvoltage Protection, Undervoltage Protection
-
-
DIN Rail
-
-
-
-
Phase Loss, Phase Sequence, Phase Asymmetry
2 → 999s
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-
-
36 x 90 x 67mm
66.21mm
-
Screw
36mm
+60°C
-10°C
-10 → +60°C
-
-
45Hz
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65Hz
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-
RS Stock No.: 223-7791Brand: RS PRO
€ 143.99
€ 143.99 Each (Exc. Vat)
Check stock
1
RS Pro
-
Phase
-
-
3
-
-
SPDT
-
Overvoltage Protection, Undervoltage Protection
-
-
DIN Rail
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-
-
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-
-
-
17.5 x 90 x 66.5mm
66.5mm
-
Screw
90mm
+60°C
-20°C
-20 → +60°C
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RS Stock No.: 102-6133Brand: RS PRO
€ 151.25
€ 151.25 Each (Exc. Vat)
Check stock
1
RS Pro
-
Voltage
-
-
1
-
Maximum of 500 V
SPDT
-
Overvoltage, Undervoltage
-
-
DIN Rail
-
-
-
-
-
0.1 → 30s
48 → 63Hz
-
-
L
17.5 x 66.5 x 89mm
66.5mm
-
Screw
17.5mm
+60°C
-20°C
+60°C
-
1
-
89mm
500V
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-
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RS Stock No.: 102-6134Brand: RS PRO
€ 151.25
€ 151.25 Each (Exc. Vat)
Check stock
1
RS Pro
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Current
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1
-
-
SPDT
-
-
-
-
DIN Rail
1A
-
10A
Overcurrent, Undercurrent
-
0.1 → 30s
48 → 63Hz
-
-
L
66.5 x 17.5 x 89mm
66.5mm
-
Screw
17.5mm
+60°C
-20°C
+60°C
Green LED Indication for Supply Status
1
-
89mm
-
-
-
-
-
1 → 10A
RS Stock No.: 102-6137Brand: RS PRO
€ 110.72
€ 110.72 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
66.5mm
-
Screw
17.5mm
+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
-
89mm
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RS Stock No.: 225-7388Brand: RS PRO
€ 146.41
€ 146.41 Each (Exc. Vat)
Check stock
1
RS Pro
-
Phase, Voltage
-
-
3
-
243 → 540 V
DPDT
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Undervoltage
-
-
DIN Rail, Surface Mount
-
-
-
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Phase Failure, Phase Sequence
0.2 → 10s
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-
-
89 x 17.5 x 66.5mm
89mm
-
Screw
17.5mm
+60°C
-20°C
-20 → +60°C
Microprocessor Based, Detects Incorrect Phase Sequence, Phase Loss And Neutral Loss, Adjustment For Under Voltage Trip Level, Adjustment For Time Delay
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-
66.5mm
540V
243 V
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-
-
RS Stock No.: 225-7384Brand: RS PRO
€ 74.42
€ 74.42 Each (Exc. Vat)
Check stock
1
RS Pro
-
Phase
-
-
3
-
-
-
-
-
-
-
DIN Rail, Surface Mount
-
-
-
-
Phase Failure, Phase Sequence
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-
-
-
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-
66.5mm
-
Screw
17.5mm
+60°C
-20°C
-20 → +60°C
3 LEDs for Phase presence status, Sequence Status,
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-
-
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RS Stock No.: 225-7387Brand: RS PRO
€ 147.62
€ 147.62 Each (Exc. Vat)
Check stock
1
RS Pro
-
Phase, Voltage
-
-
3
-
-
DPDT
-
Overvoltage, Undervoltage
-
-
DIN Rail
-
-
-
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Phase Failure, Phase Sequence
-
-
-
-
-
-
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Screw
17.5mm
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RS Stock No.: 102-6131Brand: RS PRO
€ 85.30
€ 85.30 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
66.5mm
-
Screw
17.5mm
+60°C
-20°C
+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
1
63Hz
89mm
-
-
-
48Hz
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-
RS Stock No.: 225-7386Brand: RS PRO
€ 133.10
€ 133.10 Each (Exc. Vat)
Check stock
1
RS Stock No.: 132-174Brand: RS PRO
€ 29.40
€ 29.40 Each (Exc. Vat)
Check stock
1
RS Stock No.: 434-506Brand: RS PRO
€ 58.20
€ 58.20 Each (Exc. Vat)
Check stock
1
RS Pro
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Current
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Three
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1NO/1NC
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DIN Rail Mount
40A
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100A
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0.1 → 20s
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-
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44 x 84.5 x 75mm
44mm
CE
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84.5mm
55°C
-20°C
-20 to 55°C
Error Delay Time Adjustable
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75mm
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40 → 100A
RS Stock No.: 132-171Brand: RS PRO
€ 26.98
€ 26.98 Each (Exc. Vat)
Check stock
1
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