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
€ 79.26
€ 79.26 Each (Exc. Vat)
Check stock
1
RS Pro
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Voltage
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1
SPDT
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12 → 24V dc
Undervoltage
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DIN Rail
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0 → 30s
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L
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89mm
24V dc
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12V dc
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+60°C
+60°C
1
17.5 x 66.5 x 89mm
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Screw
17.5mm
-20°C
RS Stock No.: 102-6136Brand: RS PRO
€ 86.52
€ 86.52 Each (Exc. Vat)
Check stock
1
RS Pro
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Phase, Voltage
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3
SPDT
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Undervoltage
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DIN Rail
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Phase Failure, Phase Sequence
0.2 → 10s
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48 → 63Hz
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L
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89mm
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-
+60°C
+60°C
1
17.5 x 66.5 x 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
17.5mm
-20°C
RS Stock No.: 223-7792Brand: RS PRO
€ 124.63
€ 124.63 Each (Exc. Vat)
Check stock
1
RS Pro
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Phase
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3
SPDT
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Overvoltage Protection, Undervoltage Protection
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DIN Rail
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+60°C
-20 → +60°C
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17.5 x 90 x 66.5mm
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Screw
90mm
-20°C
RS Stock No.: 223-7795Brand: RS PRO
€ 142.78
€ 142.78 Each (Exc. Vat)
Check stock
1
RS Pro
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Phase
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3
SPDT
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Phase Loss, Voltage Assemmetry
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DIN Rail
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+60°C
-20 → +60°C
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17.5 x 90 x 66.5mm
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Screw
90mm
-20°C
RS Stock No.: 102-6135Brand: RS PRO
€ 82.28
€ 82.28 Each (Exc. Vat)
Check stock
1
RS Pro
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Phase, Voltage
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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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Phase Failure, Phase Sequence
100ms
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48 → 63Hz
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L
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89mm
280V
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+60°C
+60°C
1
17.5 x 66.5 x 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
17.5mm
-20°C
RS Stock No.: 223-7790Brand: RS PRO
€ 175.45
€ 175.45 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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2 → 999s
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90mm
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+60°C
-10 → +60°C
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36 x 90 x 67mm
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Screw
36mm
-10°C
RS Stock No.: 223-7789Brand: RS PRO
€ 163.35
€ 163.35 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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2 → 999s
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+60°C
-10 → +60°C
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36 x 90 x 67mm
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Screw
36mm
-10°C
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
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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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65Hz
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+60°C
-10 → +60°C
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36 x 90 x 67mm
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Screw
36mm
-10°C
RS Stock No.: 223-7791Brand: RS PRO
€ 145.20
€ 145.20 Each (Exc. Vat)
Check stock
1
RS Pro
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Phase
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3
SPDT
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Overvoltage Protection, Undervoltage Protection
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DIN Rail
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+60°C
-20 → +60°C
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17.5 x 90 x 66.5mm
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Screw
90mm
-20°C
RS Stock No.: 102-6133Brand: RS PRO
€ 152.46
€ 152.46 Each (Exc. Vat)
Check stock
1
RS Pro
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Voltage
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1
SPDT
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Maximum of 500 V
Overvoltage, Undervoltage
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DIN Rail
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0.1 → 30s
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48 → 63Hz
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L
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89mm
500V
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+60°C
+60°C
1
17.5 x 66.5 x 89mm
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Screw
17.5mm
-20°C
RS Stock No.: 102-6134Brand: RS PRO
€ 152.46
€ 152.46 Each (Exc. Vat)
Check stock
1
RS Pro
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Current
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1
SPDT
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DIN Rail
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1A
10A
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Overcurrent, Undercurrent
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0.1 → 30s
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48 → 63Hz
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L
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89mm
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1 → 10A
+60°C
+60°C
1
66.5 x 17.5 x 89mm
Green LED Indication for Supply Status
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Screw
17.5mm
-20°C
RS Stock No.: 102-6137Brand: RS PRO
€ 111.32
€ 111.32 Each (Exc. Vat)
Check stock
1
RS Pro
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Phase, Voltage
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3
SPDT
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Overvoltage, Undervoltage
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DIN Rail
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Phase Failure, Phase Sequence
0.2 → 10s
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48 → 63Hz
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L
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89mm
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+60°C
+60°C
1
17.5 x 66.5 x 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
17.5mm
-20°C
RS Stock No.: 225-7388Brand: RS PRO
€ 147.62
€ 147.62 Each (Exc. Vat)
Check stock
1
RS Pro
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Phase, Voltage
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3
DPDT
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243 → 540 V
Undervoltage
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DIN Rail, Surface Mount
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Phase Failure, Phase Sequence
0.2 → 10s
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66.5mm
540V
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243 V
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+60°C
-20 → +60°C
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89 x 17.5 x 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
17.5mm
-20°C
RS Stock No.: 225-7384Brand: RS PRO
€ 75.02
€ 75.02 Each (Exc. Vat)
Check stock
1
RS Pro
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Phase
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3
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DIN Rail, Surface Mount
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Phase Failure, Phase Sequence
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+60°C
-20 → +60°C
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3 LEDs for Phase presence status, Sequence Status,
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Screw
17.5mm
-20°C
RS Stock No.: 225-7387Brand: RS PRO
€ 148.83
€ 148.83 Each (Exc. Vat)
Check stock
1
RS Pro
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Phase, Voltage
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3
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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Screw
17.5mm
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RS Stock No.: 102-6131Brand: RS PRO
€ 85.91
€ 85.91 Each (Exc. Vat)
Check stock
1
RS Pro
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Voltage
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1
SPDT
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Overvoltage, Undervoltage
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DIN Rail
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0.2 → 10s
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48 → 63Hz
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L
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89mm
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48Hz
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+60°C
+60°C
1
17.5 x 66.5 x 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
17.5mm
-20°C
RS Stock No.: 225-7386Brand: RS PRO
€ 134.31
€ 134.31 Each (Exc. Vat)
Check stock
1
RS Pro
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Voltage
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3
DPDT
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Overvoltage, Undervoltage
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DIN Rail
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Screw
17.5mm
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RS Stock No.: 132-174Brand: RS PRO
€ 29.52
€ 29.52 Each (Exc. Vat)
Check stock
1
RS Stock No.: 434-506Brand: RS PRO
€ 58.68
€ 58.68 Each (Exc. Vat)
Check stock
1
RS Pro
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Current
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Three
1NO/1NC
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DIN Rail Mount
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40A
100A
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0.1 → 20s
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75mm
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40 → 100A
55°C
-20 to 55°C
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44 x 84.5 x 75mm
Error Delay Time Adjustable
CE
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84.5mm
-20°C
RS Stock No.: 132-171Brand: RS PRO
€ 27.22
€ 27.22 Each (Exc. Vat)
Check stock
1
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