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 1304 products
RS Stock No.: 434-506Brand: RS PRO
€ 85.16
€ 85.16 Each (Exc. Vat)
Check stock
1
RS Pro
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Current
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-
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Three
1NO/1NC
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-
-
-
-
DIN Rail Mount
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40A
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100A
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-
0.1 → 20s
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-
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-
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-20 to 55°C
40 → 100A
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75mm
CE
Error Delay Time Adjustable
44 x 84.5 x 75mm
84.5mm
55°C
-20°C
-
44mm
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-
-
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-
RS Stock No.: 434-521Brand: RS PRO
€ 77.69
€ 77.69 Each (Exc. Vat)
Check stock
1
RS Pro
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Voltage
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-
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Single
1NO
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120 → 300V ac
Overvoltage
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-
DIN Rail Mount
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-
-
-
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0.1 → 600s
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-20 to 55°C
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90.3mm
CE
Built-In Current Transformer, Built-In Contactor
52.9 x 67.5 x 90.3mm
67.5mm
55°C
-20°C
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52.9mm
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-
120V
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300V
RS Stock No.: 434-520Brand: RS PRO
€ 61.79
€ 61.79 Each (Exc. Vat)
Check stock
1
RS Pro
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Voltage
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-
-
Three
1NO/1NC
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230 → 460V ac
Overvoltage
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-
DIN Rail or Panel
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-
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Phase Loss
0.1 → 10s
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-
-
-
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-20 to 55°C
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-
75mm
CE
Phase Sequence Control, With PTC, Non-Neutral
44 x 84.5 x 75mm
84.5mm
55°C
-20°C
-
44mm
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-
230V
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460V
RS Stock No.: 132-174Brand: RS PRO
€ 42.95
€ 42.95 Each (Exc. Vat)
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1
RS Stock No.: 132-171Brand: RS PRO
€ 39.46
€ 39.46 Each (Exc. Vat)
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1
RS Stock No.: 122-217Brand: RS PRO
€ 19.46
€ 19.46 Each (Exc. Vat)
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1
RS Stock No.: 122-216Brand: RS PRO
€ 26.73
€ 26.73 Each (Exc. Vat)
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1
RS Stock No.: 132-172Brand: RS PRO
€ 26.54
€ 26.54 Each (Exc. Vat)
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1
RS Stock No.: 132-173Brand: RS PRO
€ 33.21
€ 33.21 Each (Exc. Vat)
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1
RS Stock No.: 122-215Brand: RS PRO
€ 40.72
€ 40.72 Each (Exc. Vat)
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1
RS Stock No.: 122-210Brand: RS PRO
€ 30.49
€ 30.49 Each (Exc. Vat)
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1
RS Stock No.: 122-212Brand: RS PRO
€ 35.84
€ 35.84 Each (Exc. Vat)
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1
RS Stock No.: 102-6130Brand: RS PRO
€ 114.94
€ 114.94 Each (Exc. Vat)
Check stock
1
RS Pro
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Voltage
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-
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1
SPDT
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12 → 24V dc
Undervoltage
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-
DIN Rail
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-
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0 → 30s
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-
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L
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Screw
+60°C
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-
89mm
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-
17.5 x 66.5 x 89mm
17.5mm
+60°C
-20°C
1
66.5mm
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-
12V dc
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24V dc
RS Stock No.: 102-6136Brand: RS PRO
€ 125.39
€ 125.39 Each (Exc. Vat)
Check stock
1
RS Pro
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Phase, Voltage
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-
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3
SPDT
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-
Undervoltage
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-
DIN Rail
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-
-
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Phase Failure, Phase Sequence
0.2 → 10s
48 → 63Hz
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L
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Screw
+60°C
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89mm
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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
17.5 x 66.5 x 89mm
17.5mm
+60°C
-20°C
1
66.5mm
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-
-
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-
RS Stock No.: 223-7795Brand: RS PRO
€ 207.06
€ 207.06 Each (Exc. Vat)
Check stock
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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-
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Screw
-20 → +60°C
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-
17.5 x 90 x 66.5mm
90mm
+60°C
-20°C
-
66.5mm
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-
-
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-
RS Stock No.: 102-6135Brand: RS PRO
€ 119.76
€ 119.76 Each (Exc. Vat)
Check stock
1
RS Pro
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Phase, Voltage
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-
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3
SPDT
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Maximum of 280 V
Undervoltage
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-
DIN Rail
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-
-
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Phase Failure, Phase Sequence
100ms
48 → 63Hz
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-
L
-
Screw
+60°C
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-
89mm
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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
17.5 x 66.5 x 89mm
17.5mm
+60°C
-20°C
1
66.5mm
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-
-
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280V
RS Stock No.: 223-7789Brand: RS PRO
€ 237.29
€ 237.29 Each (Exc. 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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DIN Rail
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-
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2 → 999s
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Screw
-10 → +60°C
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36 x 90 x 67mm
36mm
+60°C
-10°C
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66.21mm
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-
-
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-
RS Stock No.: 223-7790Brand: RS PRO
€ 254.05
€ 254.05 Each (Exc. Vat)
Check stock
1
RS Pro
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Voltage
-
-
-
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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Screw
-10 → +60°C
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-
90mm
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-
36 x 90 x 67mm
36mm
+60°C
-10°C
-
66.21mm
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-
-
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-
RS Stock No.: 223-7788Brand: RS PRO
€ 220.52
€ 220.52 Each (Exc. Vat)
Check stock
1
RS Pro
-
Phase, Voltage
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-
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3
SPDT
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-
Overvoltage Protection, Undervoltage Protection
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DIN Rail
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Phase Loss, Phase Sequence, Phase Asymmetry
2 → 999s
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Screw
-10 → +60°C
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45Hz
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36 x 90 x 67mm
36mm
+60°C
-10°C
-
66.21mm
65Hz
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-
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-
RS Stock No.: 223-7791Brand: RS PRO
€ 210.75
€ 210.75 Each (Exc. Vat)
Check stock
1
RS Pro
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Phase
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-
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3
SPDT
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-
Overvoltage Protection, Undervoltage Protection
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-
DIN Rail
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Screw
-20 → +60°C
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17.5 x 90 x 66.5mm
90mm
+60°C
-20°C
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66.5mm
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