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 1175 products
RS Stock No.: 223-7795Brand: RS PRO
€ 160.64
€ 160.64 Each (Exc. Vat)
Check stock
1
RS Pro
Phase
3
SPDT
Phase Loss, Voltage Assemmetry
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DIN Rail
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17.5 x 90 x 66.5mm
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90mm
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-20°C
+60°C
-20 → +60°C
Screw
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-
66.5mm
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RS Stock No.: 223-7790Brand: RS PRO
€ 198.29
€ 198.29 Each (Exc. Vat)
Check stock
1
RS Pro
Voltage
3
DPDT
-
Overvoltage Protection, Undervoltage Protection
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-
DIN Rail
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2 → 999s
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36 x 90 x 67mm
90mm
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36mm
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-10°C
+60°C
-10 → +60°C
Screw
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-
66.21mm
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RS Stock No.: 223-7789Brand: RS PRO
€ 184.48
€ 184.48 Each (Exc. Vat)
Check stock
1
RS Pro
Voltage
3
DPDT
-
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
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36mm
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-10°C
+60°C
-10 → +60°C
Screw
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66.21mm
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RS Stock No.: 223-7788Brand: RS PRO
€ 171.94
€ 171.94 Each (Exc. Vat)
Check stock
1
RS Pro
Phase, Voltage
3
SPDT
-
Overvoltage Protection, Undervoltage Protection
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-
DIN Rail
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-
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-
Phase Loss, Phase Sequence, Phase Asymmetry
2 → 999s
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36 x 90 x 67mm
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65Hz
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36mm
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-10°C
+60°C
-10 → +60°C
Screw
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45Hz
66.21mm
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RS Stock No.: 223-7791Brand: RS PRO
€ 164.40
€ 164.40 Each (Exc. Vat)
Check stock
1
RS Pro
Phase
3
SPDT
-
Overvoltage Protection, Undervoltage Protection
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-
DIN Rail
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17.5 x 90 x 66.5mm
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90mm
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-20°C
+60°C
-20 → +60°C
Screw
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-
66.5mm
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RS Stock No.: 225-7388Brand: RS PRO
€ 166.92
€ 166.92 Each (Exc. Vat)
Check stock
1
RS Pro
Phase, Voltage
3
DPDT
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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89 x 17.5 x 66.5mm
66.5mm
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540V
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243 V
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17.5mm
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-20°C
+60°C
-20 → +60°C
Screw
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-
89mm
Microprocessor Based, Detects Incorrect Phase Sequence, Phase Loss And Neutral Loss, Adjustment For Under Voltage Trip Level, Adjustment For Time Delay
RS Stock No.: 225-7384Brand: RS PRO
€ 84.71
€ 84.71 Each (Exc. Vat)
Check stock
1
RS Pro
Phase
3
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DIN Rail, Surface Mount
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Phase Failure, Phase Sequence
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17.5mm
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-20°C
+60°C
-20 → +60°C
Screw
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-
66.5mm
3 LEDs for Phase presence status, Sequence Status,
RS Stock No.: 225-7387Brand: RS PRO
€ 168.17
€ 168.17 Each (Exc. Vat)
Check stock
1
RS Pro
Phase, Voltage
3
DPDT
-
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.: 225-7386Brand: RS PRO
€ 151.86
€ 151.86 Each (Exc. Vat)
Check stock
1
RS Stock No.: 102-6130Brand: RS PRO
€ 89.73
€ 89.73 Each (Exc. Vat)
Check stock
1
RS Pro
Voltage
1
SPDT
12 → 24V dc
Undervoltage
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DIN Rail
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0 → 30s
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L
1
17.5 x 66.5 x 89mm
89mm
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24V dc
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12V dc
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17.5mm
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-20°C
+60°C
+60°C
Screw
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-
66.5mm
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RS Stock No.: 102-6136Brand: RS PRO
€ 97.89
€ 97.89 Each (Exc. Vat)
Check stock
1
RS Pro
Phase, Voltage
3
SPDT
-
Undervoltage
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-
DIN Rail
-
-
-
-
Phase Failure, Phase Sequence
0.2 → 10s
48 → 63Hz
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L
1
17.5 x 66.5 x 89mm
89mm
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17.5mm
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-20°C
+60°C
+60°C
Screw
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-
66.5mm
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
RS Stock No.: 102-6135Brand: RS PRO
€ 93.50
€ 93.50 Each (Exc. Vat)
Check stock
1
RS Pro
Phase, Voltage
3
SPDT
Maximum of 280 V
Undervoltage
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DIN Rail
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Phase Failure, Phase Sequence
100ms
48 → 63Hz
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L
1
17.5 x 66.5 x 89mm
89mm
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280V
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17.5mm
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-20°C
+60°C
+60°C
Screw
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-
66.5mm
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
RS Stock No.: 102-6133Brand: RS PRO
€ 171.94
€ 171.94 Each (Exc. Vat)
Check stock
1
RS Pro
Voltage
1
SPDT
Maximum of 500 V
Overvoltage, Undervoltage
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DIN Rail
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-
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0.1 → 30s
48 → 63Hz
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L
1
17.5 x 66.5 x 89mm
89mm
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500V
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17.5mm
-
-20°C
+60°C
+60°C
Screw
-
-
66.5mm
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RS Stock No.: 102-6134Brand: RS PRO
€ 171.94
€ 171.94 Each (Exc. Vat)
Check stock
1
RS Pro
Current
1
SPDT
-
-
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-
DIN Rail
1A
10A
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Overcurrent, Undercurrent
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0.1 → 30s
48 → 63Hz
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L
1
66.5 x 17.5 x 89mm
89mm
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17.5mm
1 → 10A
-20°C
+60°C
+60°C
Screw
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-
66.5mm
Green LED Indication for Supply Status
RS Stock No.: 102-6137Brand: RS PRO
€ 125.50
€ 125.50 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
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-
L
1
17.5 x 66.5 x 89mm
89mm
-
-
-
-
-
17.5mm
-
-20°C
+60°C
+60°C
Screw
-
-
66.5mm
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
RS Stock No.: 102-6131Brand: RS PRO
€ 97.26
€ 97.26 Each (Exc. Vat)
Check stock
1
RS Pro
Voltage
1
SPDT
-
Overvoltage, Undervoltage
-
-
DIN Rail
-
-
-
-
-
0.2 → 10s
48 → 63Hz
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L
1
17.5 x 66.5 x 89mm
89mm
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48Hz
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17.5mm
-
-20°C
+60°C
+60°C
Screw
-
63Hz
66.5mm
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
€ 297.44
€ 297.44 Each (Exc. Vat)
Check stock
1
ATC
Frequency, Phase, Voltage
2
SPDT
300 → 600V ac
Frequency, Overvoltage, Phase Asymmetry, Phase Failure, Phase Sequence, Undervoltage
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DIN Rail
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€ 259.78
€ 259.78 Each (Exc. Vat)
Check stock
1
€ 176.96
€ 176.96 Each (Exc. Vat)
Check stock
1
€ 238.45
€ 238.45 Each (Exc. Vat)
Check stock
1
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