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 1256 products
RS Stock No.: 102-6130Brand: RS PRO
€ 77.44
€ 77.44 Each (Exc. Vat)
Check stock
1
RS Pro
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Voltage
1
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SPDT
12 → 24V dc
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Undervoltage
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DIN Rail
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0 → 30s
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L
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+60°C
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17.5mm
89mm
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Screw
+60°C
1
17.5 x 66.5 x 89mm
66.5mm
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24V dc
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12V dc
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RS Stock No.: 102-6136Brand: RS PRO
€ 84.70
€ 84.70 Each (Exc. Vat)
Check stock
1
RS Pro
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Phase, Voltage
3
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SPDT
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Undervoltage
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DIN Rail
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Phase Failure, Phase Sequence
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0.2 → 10s
48 → 63Hz
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L
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+60°C
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17.5mm
89mm
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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Screw
+60°C
1
17.5 x 66.5 x 89mm
66.5mm
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RS Stock No.: 223-7792Brand: RS PRO
€ 122.21
€ 122.21 Each (Exc. Vat)
Check stock
1
RS Pro
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Phase
3
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SPDT
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Overvoltage Protection, Undervoltage Protection
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DIN Rail
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+60°C
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90mm
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Screw
-20 → +60°C
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17.5 x 90 x 66.5mm
66.5mm
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RS Stock No.: 223-7795Brand: RS PRO
€ 140.36
€ 140.36 Each (Exc. Vat)
Check stock
1
RS Pro
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Phase
3
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SPDT
Phase Loss, Voltage Assemmetry
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DIN Rail
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+60°C
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90mm
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Screw
-20 → +60°C
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17.5 x 90 x 66.5mm
66.5mm
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RS Stock No.: 102-6135Brand: RS PRO
€ 81.07
€ 81.07 Each (Exc. Vat)
Check stock
1
RS Pro
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Phase, Voltage
3
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SPDT
Maximum of 280 V
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Undervoltage
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DIN Rail
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Phase Failure, Phase Sequence
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100ms
48 → 63Hz
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L
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+60°C
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17.5mm
89mm
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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Screw
+60°C
1
17.5 x 66.5 x 89mm
66.5mm
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280V
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RS Stock No.: 223-7789Brand: RS PRO
€ 159.72
€ 159.72 Each (Exc. Vat)
Check stock
1
RS Pro
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Voltage
3
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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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+60°C
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36mm
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Screw
-10 → +60°C
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36 x 90 x 67mm
66.21mm
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RS Stock No.: 223-7790Brand: RS PRO
€ 171.82
€ 171.82 Each (Exc. Vat)
Check stock
1
RS Pro
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Voltage
3
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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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+60°C
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36mm
90mm
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Screw
-10 → +60°C
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36 x 90 x 67mm
66.21mm
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RS Stock No.: 223-7788Brand: RS PRO
€ 148.83
€ 148.83 Each (Exc. Vat)
Check stock
1
RS Pro
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Phase, Voltage
3
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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
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2 → 999s
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+60°C
45Hz
36mm
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Screw
-10 → +60°C
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36 x 90 x 67mm
66.21mm
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RS Stock No.: 223-7791Brand: RS PRO
€ 142.78
€ 142.78 Each (Exc. Vat)
Check stock
1
RS Pro
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Phase
3
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SPDT
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Overvoltage Protection, Undervoltage Protection
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DIN Rail
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+60°C
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90mm
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Screw
-20 → +60°C
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17.5 x 90 x 66.5mm
66.5mm
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RS Stock No.: 102-6133Brand: RS PRO
€ 148.83
€ 148.83 Each (Exc. Vat)
Check stock
1
RS Pro
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Voltage
1
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SPDT
Maximum of 500 V
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Overvoltage, Undervoltage
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DIN Rail
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0.1 → 30s
48 → 63Hz
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L
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+60°C
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17.5mm
89mm
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Screw
+60°C
1
17.5 x 66.5 x 89mm
66.5mm
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500V
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RS Stock No.: 102-6134Brand: RS PRO
€ 148.83
€ 148.83 Each (Exc. Vat)
Check stock
1
RS Pro
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Current
1
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SPDT
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DIN Rail
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1A
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10A
Overcurrent, Undercurrent
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0.1 → 30s
48 → 63Hz
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L
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+60°C
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17.5mm
89mm
Green LED Indication for Supply Status
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Screw
+60°C
1
66.5 x 17.5 x 89mm
66.5mm
1 → 10A
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RS Stock No.: 102-6137Brand: RS PRO
€ 109.50
€ 109.50 Each (Exc. Vat)
Check stock
1
RS Pro
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Phase, Voltage
3
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SPDT
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Overvoltage, Undervoltage
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DIN Rail
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Phase Failure, Phase Sequence
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0.2 → 10s
48 → 63Hz
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L
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+60°C
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17.5mm
89mm
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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Screw
+60°C
1
17.5 x 66.5 x 89mm
66.5mm
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RS Stock No.: 225-7388Brand: RS PRO
€ 145.20
€ 145.20 Each (Exc. Vat)
Check stock
1
RS Pro
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Phase, Voltage
3
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DPDT
243 → 540 V
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Undervoltage
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DIN Rail, Surface Mount
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Phase Failure, Phase Sequence
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0.2 → 10s
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+60°C
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17.5mm
66.5mm
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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Screw
-20 → +60°C
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89 x 17.5 x 66.5mm
89mm
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540V
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243 V
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RS Stock No.: 225-7384Brand: RS PRO
€ 73.20
€ 73.20 Each (Exc. Vat)
Check stock
1
RS Pro
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Phase
3
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DIN Rail, Surface Mount
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Phase Failure, Phase Sequence
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+60°C
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17.5mm
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3 LEDs for Phase presence status, Sequence Status,
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Screw
-20 → +60°C
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66.5mm
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RS Stock No.: 225-7387Brand: RS PRO
€ 146.41
€ 146.41 Each (Exc. Vat)
Check stock
1
RS Pro
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-
Phase, Voltage
3
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DPDT
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Overvoltage, Undervoltage
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DIN Rail
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Phase Failure, Phase Sequence
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17.5mm
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Screw
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RS Stock No.: 102-6131Brand: RS PRO
€ 84.10
€ 84.10 Each (Exc. Vat)
Check stock
1
RS Pro
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Voltage
1
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SPDT
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Overvoltage, Undervoltage
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DIN Rail
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0.2 → 10s
48 → 63Hz
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L
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+60°C
63Hz
17.5mm
89mm
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
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Screw
+60°C
1
17.5 x 66.5 x 89mm
66.5mm
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RS Stock No.: 225-7386Brand: RS PRO
€ 131.89
€ 131.89 Each (Exc. Vat)
Check stock
1
RS Pro
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Voltage
3
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DPDT
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Overvoltage, Undervoltage
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DIN Rail
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17.5mm
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Screw
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RS Stock No.: 132-174Brand: RS PRO
€ 29.04
€ 29.04 Each (Exc. Vat)
Check stock
1
RS Stock No.: 434-506Brand: RS PRO
€ 57.48
€ 57.48 Each (Exc. Vat)
Check stock
1
RS Pro
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Current
Three
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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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55°C
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84.5mm
75mm
Error Delay Time Adjustable
CE
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-20 to 55°C
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44 x 84.5 x 75mm
44mm
40 → 100A
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RS Stock No.: 132-171Brand: RS PRO
€ 26.62
€ 26.62 Each (Exc. Vat)
Check stock
1
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