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 1143 products
RS Stock No.: 223-7792Brand: RS PRO
€ 103.34
Each (ex VAT)
Check stock
1
RS Pro
Phase
3
-
SPDT
-
Overvoltage Protection, Undervoltage Protection
-
DIN Rail
-
-
-
-
-
-
-
-
-
-
Screw
17.5 x 90 x 66.5mm
+60°C
-
-20°C
66.5mm
-
-
-
-
-
-
-
-
90mm
-
-20 → +60°C
-
RS Stock No.: 223-7794Brand: RS PRO
€ 103.34
Each (ex VAT)
Check stock
1
RS Pro
Phase
3
-
SPDT
-
Overvoltage Protection, Undervoltage Protection
-
DIN Rail
-
-
-
-
-
-
-
-
-
-
Screw
17.5 x 90 x 66.5mm
+60°C
-
-20°C
66.5mm
-
-
-
-
-
-
-
-
90mm
-
-20 → +60°C
-
RS Stock No.: 223-7795Brand: RS PRO
€ 114.80
Each (ex VAT)
Check stock
1
RS Pro
Phase
3
Phase Loss, Voltage Assemmetry
SPDT
-
-
-
DIN Rail
-
-
-
-
-
-
-
-
-
-
Screw
17.5 x 90 x 66.5mm
+60°C
-
-20°C
66.5mm
-
-
-
-
-
-
-
-
90mm
-
-20 → +60°C
-
RS Stock No.: 223-7789Brand: RS PRO
€ 131.56
Each (ex VAT)
Check stock
1
RS Pro
Voltage
3
-
DPDT
-
Overvoltage Protection, Undervoltage Protection
-
DIN Rail
-
-
-
-
-
2 → 999s
-
-
-
-
Screw
36 x 90 x 67mm
+60°C
-
-10°C
66.21mm
-
-
-
-
-
-
-
-
36mm
-
-10 → +60°C
-
RS Stock No.: 223-7790Brand: RS PRO
€ 140.86
Each (ex VAT)
Check stock
1
RS Pro
Voltage
3
-
DPDT
-
Overvoltage Protection, Undervoltage Protection
-
DIN Rail
-
-
-
-
-
2 → 999s
-
-
-
-
Screw
36 x 90 x 67mm
+60°C
-
-10°C
66.21mm
-
-
-
-
-
-
-
-
36mm
90mm
-10 → +60°C
-
RS Stock No.: 223-7788Brand: RS PRO
€ 122.26
Each (ex VAT)
Check stock
1
RS Pro
Phase, Voltage
3
-
SPDT
-
Overvoltage Protection, Undervoltage Protection
-
DIN Rail
-
-
-
-
Phase Loss, Phase Sequence, Phase Asymmetry
2 → 999s
-
-
-
-
Screw
36 x 90 x 67mm
+60°C
45Hz
-10°C
66.21mm
-
-
-
65Hz
-
-
-
-
36mm
-
-10 → +60°C
-
RS Stock No.: 223-7791Brand: RS PRO
€ 116.85
Each (ex VAT)
Check stock
1
RS Pro
Phase
3
-
SPDT
-
Overvoltage Protection, Undervoltage Protection
-
DIN Rail
-
-
-
-
-
-
-
-
-
-
Screw
17.5 x 90 x 66.5mm
+60°C
-
-20°C
66.5mm
-
-
-
-
-
-
-
-
90mm
-
-20 → +60°C
-
RS Stock No.: 225-7388Brand: RS PRO
€ 118.85
Each (ex VAT)
Check stock
1
RS Pro
Phase, Voltage
3
243 → 540 V
DPDT
-
Undervoltage
-
DIN Rail, Surface Mount
-
-
-
-
Phase Failure, Phase Sequence
0.2 → 10s
-
-
-
-
Screw
89 x 17.5 x 66.5mm
+60°C
-
-20°C
89mm
-
Microprocessor Based, Detects Incorrect Phase Sequence, Phase Loss And Neutral Loss, Adjustment For Under Voltage Trip Level, Adjustment For Time Delay
540V
-
-
243 V
-
-
17.5mm
66.5mm
-20 → +60°C
-
RS Stock No.: 225-7384Brand: RS PRO
€ 60.24
Each (ex VAT)
Check stock
1
RS Pro
Phase
3
-
-
-
-
-
DIN Rail, Surface Mount
-
-
-
-
Phase Failure, Phase Sequence
-
-
-
-
-
Screw
-
+60°C
-
-20°C
66.5mm
-
3 LEDs for Phase presence status, Sequence Status,
-
-
-
-
-
-
17.5mm
-
-20 → +60°C
-
RS Stock No.: 225-7387Brand: RS PRO
€ 119.78
Each (ex VAT)
Check stock
1
RS Pro
Phase, Voltage
3
-
DPDT
-
Overvoltage, Undervoltage
-
DIN Rail
-
-
-
-
Phase Failure, Phase Sequence
-
-
-
-
-
Screw
-
-
-
-
-
-
-
-
-
-
-
-
-
17.5mm
-
-
-
RS Stock No.: 225-7386Brand: RS PRO
€ 107.80
Each (ex VAT)
Check stock
1
RS Stock No.: 102-6130Brand: RS PRO
€ 63.73
Each (ex VAT)
Check stock
1
RS Pro
Voltage
1
12 → 24V dc
SPDT
-
Undervoltage
-
DIN Rail
-
-
-
-
-
0 → 30s
-
-
-
L
Screw
17.5 x 66.5 x 89mm
+60°C
-
-20°C
66.5mm
-
-
24V dc
-
-
12V dc
-
1
17.5mm
89mm
+60°C
-
RS Stock No.: 102-6136Brand: RS PRO
€ 69.52
Each (ex VAT)
Check stock
1
RS Pro
Phase, Voltage
3
-
SPDT
-
Undervoltage
-
DIN Rail
-
-
-
-
Phase Failure, Phase Sequence
0.2 → 10s
48 → 63Hz
-
-
L
Screw
17.5 x 66.5 x 89mm
+60°C
-
-20°C
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
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-
-
-
-
1
17.5mm
89mm
+60°C
-
RS Stock No.: 102-6135Brand: RS PRO
€ 66.39
Each (ex VAT)
Check stock
1
RS Pro
Phase, Voltage
3
Maximum of 280 V
SPDT
-
Undervoltage
-
DIN Rail
-
-
-
-
Phase Failure, Phase Sequence
100ms
48 → 63Hz
-
-
L
Screw
17.5 x 66.5 x 89mm
+60°C
-
-20°C
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
280V
-
-
-
-
1
17.5mm
89mm
+60°C
-
RS Stock No.: 102-6133Brand: RS PRO
€ 122.38
Each (ex VAT)
Check stock
1
RS Pro
Voltage
1
Maximum of 500 V
SPDT
-
Overvoltage, Undervoltage
-
DIN Rail
-
-
-
-
-
0.1 → 30s
48 → 63Hz
-
-
L
Screw
17.5 x 66.5 x 89mm
+60°C
-
-20°C
66.5mm
-
-
500V
-
-
-
-
1
17.5mm
89mm
+60°C
-
RS Stock No.: 102-6134Brand: RS PRO
€ 122.38
Each (ex VAT)
Check stock
1
RS Pro
Current
1
-
SPDT
-
-
-
DIN Rail
1A
-
10A
Overcurrent, Undercurrent
-
0.1 → 30s
48 → 63Hz
-
-
L
Screw
66.5 x 17.5 x 89mm
+60°C
-
-20°C
66.5mm
-
Green LED Indication for Supply Status
-
-
-
-
-
1
17.5mm
89mm
+60°C
1 → 10A
RS Stock No.: 102-6137Brand: RS PRO
€ 89.84
Each (ex VAT)
Check stock
1
RS Pro
Phase, Voltage
3
-
SPDT
-
Overvoltage, Undervoltage
-
DIN Rail
-
-
-
-
Phase Failure, Phase Sequence
0.2 → 10s
48 → 63Hz
-
-
L
Screw
17.5 x 66.5 x 89mm
+60°C
-
-20°C
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
-
-
-
-
-
1
17.5mm
89mm
+60°C
-
RS Stock No.: 102-6131Brand: RS PRO
€ 69.24
Each (ex VAT)
Check stock
1
RS Pro
Voltage
1
-
SPDT
-
Overvoltage, Undervoltage
-
DIN Rail
-
-
-
-
-
0.2 → 10s
48 → 63Hz
-
-
L
Screw
17.5 x 66.5 x 89mm
+60°C
63Hz
-20°C
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
-
48Hz
-
-
-
1
17.5mm
89mm
+60°C
-
...