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
€ 58.78
€ 58.78 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
100A
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0.1 → 20s
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55°C
44mm
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CE
Error Delay Time Adjustable
-20°C
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40 → 100A
84.5mm
44 x 84.5 x 75mm
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-
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-
-20 to 55°C
75mm
RS Stock No.: 434-521Brand: RS PRO
€ 53.57
€ 53.57 Each (Exc. Vat)
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1
RS Pro
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Voltage
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Single
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120 → 300V ac
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1NO
Overvoltage
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DIN Rail Mount
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0.1 → 600s
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55°C
52.9mm
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CE
Built-In Current Transformer, Built-In Contactor
-20°C
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67.5mm
52.9 x 67.5 x 90.3mm
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120V
300V
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-20 to 55°C
90.3mm
RS Stock No.: 434-520Brand: RS PRO
€ 42.66
€ 42.66 Each (Exc. Vat)
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1
RS Pro
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Voltage
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Three
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230 → 460V ac
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1NO/1NC
Overvoltage
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DIN Rail or Panel
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Phase Loss
0.1 → 10s
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55°C
44mm
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CE
Phase Sequence Control, With PTC, Non-Neutral
-20°C
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-
84.5mm
44 x 84.5 x 75mm
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230V
460V
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-20 to 55°C
75mm
RS Stock No.: 132-174Brand: RS PRO
€ 29.64
€ 29.64 Each (Exc. Vat)
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1
RS Stock No.: 132-171Brand: RS PRO
€ 27.16
€ 27.16 Each (Exc. Vat)
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1
RS Stock No.: 122-217Brand: RS PRO
€ 13.39
€ 13.39 Each (Exc. Vat)
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1
RS Stock No.: 122-216Brand: RS PRO
€ 18.48
€ 18.48 Each (Exc. Vat)
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1
RS Stock No.: 132-172Brand: RS PRO
€ 18.35
€ 18.35 Each (Exc. Vat)
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1
RS Stock No.: 132-173Brand: RS PRO
€ 22.94
€ 22.94 Each (Exc. Vat)
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1
RS Stock No.: 122-215Brand: RS PRO
€ 28.15
€ 28.15 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.: 122-212Brand: RS PRO
€ 24.68
€ 24.68 Each (Exc. Vat)
Check stock
1
RS Stock No.: 102-6130Brand: RS PRO
€ 79.36
€ 79.36 Each (Exc. Vat)
Check stock
1
RS Pro
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Voltage
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1
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12 → 24V dc
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SPDT
Undervoltage
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DIN Rail
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0 → 30s
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L
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+60°C
66.5mm
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-20°C
1
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17.5mm
17.5 x 66.5 x 89mm
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12V dc
24V dc
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Screw
+60°C
89mm
RS Stock No.: 102-6136Brand: RS PRO
€ 86.80
€ 86.80 Each (Exc. Vat)
Check stock
1
RS Pro
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Phase, Voltage
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3
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SPDT
Undervoltage
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DIN Rail
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Phase Failure, Phase Sequence
0.2 → 10s
48 → 63Hz
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L
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+60°C
66.5mm
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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
-20°C
1
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17.5mm
17.5 x 66.5 x 89mm
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Screw
+60°C
89mm
RS Stock No.: 223-7795Brand: RS PRO
€ 142.60
€ 142.60 Each (Exc. Vat)
Check stock
1
RS Pro
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Phase
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3
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Phase Loss, Voltage Assemmetry
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SPDT
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DIN Rail
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+60°C
66.5mm
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-20°C
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90mm
17.5 x 90 x 66.5mm
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Screw
-20 → +60°C
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RS Stock No.: 102-6135Brand: RS PRO
€ 82.46
€ 82.46 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
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SPDT
Undervoltage
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DIN Rail
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Phase Failure, Phase Sequence
100ms
48 → 63Hz
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L
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+60°C
66.5mm
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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
-20°C
1
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17.5mm
17.5 x 66.5 x 89mm
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280V
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Screw
+60°C
89mm
RS Stock No.: 223-7789Brand: RS PRO
€ 163.68
€ 163.68 Each (Exc. Vat)
Check stock
1
RS Pro
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Voltage
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3
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DPDT
Overvoltage Protection, Undervoltage Protection
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DIN Rail
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2 → 999s
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+60°C
66.21mm
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-10°C
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36mm
36 x 90 x 67mm
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Screw
-10 → +60°C
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RS Stock No.: 223-7790Brand: RS PRO
€ 174.84
€ 174.84 Each (Exc. Vat)
Check stock
1
RS Pro
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Voltage
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3
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DPDT
Overvoltage Protection, Undervoltage Protection
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DIN Rail
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2 → 999s
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+60°C
66.21mm
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-10°C
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36mm
36 x 90 x 67mm
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Screw
-10 → +60°C
90mm
RS Stock No.: 223-7788Brand: RS PRO
€ 152.52
€ 152.52 Each (Exc. Vat)
Check stock
1
RS Pro
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Phase, Voltage
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3
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SPDT
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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+60°C
66.21mm
45Hz
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-10°C
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36mm
36 x 90 x 67mm
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65Hz
Screw
-10 → +60°C
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RS Stock No.: 223-7791Brand: RS PRO
€ 145.08
€ 145.08 Each (Exc. Vat)
Check stock
1
RS Pro
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Phase
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3
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SPDT
Overvoltage Protection, Undervoltage Protection
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DIN Rail
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+60°C
66.5mm
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-20°C
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90mm
17.5 x 90 x 66.5mm
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Screw
-20 → +60°C
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