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 1156 products
RS Stock No.: 223-7795Brand: RS PRO
55.178 OMR
55.178 OMR Each (ex VAT)
Check stock
1
RS Pro
Phase
3
Phase Loss, Voltage Assemmetry
SPDT
-
-
-
DIN Rail
-
-
-
-
-
-
-
-
-
-
-
+60°C
-
Screw
90mm
-20°C
-
17.5 x 90 x 66.5mm
66.5mm
-
-
-
-
-
-
-
-20 → +60°C
-
RS Stock No.: 223-7789Brand: RS PRO
63.236 OMR
63.236 OMR Each (ex VAT)
Check stock
1
RS Pro
Voltage
3
-
DPDT
Overvoltage Protection, Undervoltage Protection
-
-
DIN Rail
-
-
-
-
-
2 → 999s
-
-
-
-
-
+60°C
-
Screw
36mm
-10°C
-
36 x 90 x 67mm
66.21mm
-
-
-
-
-
-
-
-10 → +60°C
-
RS Stock No.: 223-7790Brand: RS PRO
67.704 OMR
67.704 OMR Each (ex VAT)
Check stock
1
RS Pro
Voltage
3
-
DPDT
Overvoltage Protection, Undervoltage Protection
-
-
DIN Rail
-
-
-
-
-
2 → 999s
-
-
-
-
-
+60°C
-
Screw
36mm
-10°C
-
36 x 90 x 67mm
66.21mm
-
-
-
-
-
-
-
-10 → +60°C
90mm
RS Stock No.: 223-7788Brand: RS PRO
58.768 OMR
58.768 OMR 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
-
-
-
-
-
+60°C
-
Screw
36mm
-10°C
-
36 x 90 x 67mm
66.21mm
-
-
-
65Hz
-
-
45Hz
-10 → +60°C
-
RS Stock No.: 223-7791Brand: RS PRO
56.164 OMR
56.164 OMR Each (ex VAT)
Check stock
1
RS Pro
Phase
3
-
SPDT
Overvoltage Protection, Undervoltage Protection
-
-
DIN Rail
-
-
-
-
-
-
-
-
-
-
-
+60°C
-
Screw
90mm
-20°C
-
17.5 x 90 x 66.5mm
66.5mm
-
-
-
-
-
-
-
-20 → +60°C
-
RS Stock No.: 225-7388Brand: RS PRO
57.125 OMR
57.125 OMR 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
-
-
-
-
-
+60°C
Microprocessor Based, Detects Incorrect Phase Sequence, Phase Loss And Neutral Loss, Adjustment For Under Voltage Trip Level, Adjustment For Time Delay
Screw
17.5mm
-20°C
-
89 x 17.5 x 66.5mm
89mm
-
-
540V
-
-
243 V
-
-20 → +60°C
66.5mm
RS Stock No.: 225-7384Brand: RS PRO
28.954 OMR
28.954 OMR Each (ex VAT)
Check stock
1
RS Pro
Phase
3
-
-
-
-
-
DIN Rail, Surface Mount
-
-
-
-
Phase Failure, Phase Sequence
-
-
-
-
-
-
+60°C
3 LEDs for Phase presence status, Sequence Status,
Screw
17.5mm
-20°C
-
-
66.5mm
-
-
-
-
-
-
-
-20 → +60°C
-
RS Stock No.: 225-7387Brand: RS PRO
57.572 OMR
57.572 OMR 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
51.812 OMR
51.812 OMR Each (ex VAT)
Check stock
1
RS Stock No.: 102-6130Brand: RS PRO
30.628 OMR
30.628 OMR Each (ex VAT)
Check stock
1
RS Pro
Voltage
1
12 → 24V dc
SPDT
Undervoltage
-
-
DIN Rail
-
-
-
-
-
0 → 30s
-
-
-
L
-
+60°C
-
Screw
17.5mm
-20°C
-
17.5 x 66.5 x 89mm
66.5mm
1
-
24V dc
-
-
12V dc
-
+60°C
89mm
RS Stock No.: 102-6136Brand: RS PRO
33.416 OMR
33.416 OMR 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
-
+60°C
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
Screw
17.5mm
-20°C
-
17.5 x 66.5 x 89mm
66.5mm
1
-
-
-
-
-
-
+60°C
89mm
RS Stock No.: 102-6135Brand: RS PRO
31.915 OMR
31.915 OMR 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
-
+60°C
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
Screw
17.5mm
-20°C
-
17.5 x 66.5 x 89mm
66.5mm
1
-
280V
-
-
-
-
+60°C
89mm
RS Stock No.: 102-6133Brand: RS PRO
58.826 OMR
58.826 OMR 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
-
+60°C
-
Screw
17.5mm
-20°C
-
17.5 x 66.5 x 89mm
66.5mm
1
-
500V
-
-
-
-
+60°C
89mm
RS Stock No.: 102-6134Brand: RS PRO
58.826 OMR
58.826 OMR Each (ex VAT)
Check stock
1
RS Pro
Current
1
-
SPDT
-
-
-
DIN Rail
1A
-
10A
Overcurrent, Undercurrent
-
0.1 → 30s
48 → 63Hz
-
-
L
-
+60°C
Green LED Indication for Supply Status
Screw
17.5mm
-20°C
1 → 10A
66.5 x 17.5 x 89mm
66.5mm
1
-
-
-
-
-
-
+60°C
89mm
RS Stock No.: 102-6137Brand: RS PRO
43.181 OMR
43.181 OMR 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
-
+60°C
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
Screw
17.5mm
-20°C
-
17.5 x 66.5 x 89mm
66.5mm
1
-
-
-
-
-
-
+60°C
89mm
RS Stock No.: 102-6131Brand: RS PRO
33.280 OMR
33.280 OMR Each (ex VAT)
Check stock
1
RS Pro
Voltage
1
-
SPDT
Overvoltage, Undervoltage
-
-
DIN Rail
-
-
-
-
-
0.2 → 10s
48 → 63Hz
-
-
L
-
+60°C
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
Screw
17.5mm
-20°C
-
17.5 x 66.5 x 89mm
66.5mm
1
-
-
48Hz
-
-
63Hz
+60°C
89mm
100.695 OMR
100.695 OMR Each (ex VAT)
Check stock
1
ATC
Frequency, Phase, Voltage
2
300 → 600V ac
SPDT
Frequency, Overvoltage, Phase Asymmetry, Phase Failure, Phase Sequence, Undervoltage
-
-
DIN Rail
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
88.762 OMR
88.762 OMR Each (ex VAT)
Check stock
1
62.071 OMR
62.071 OMR Each (ex VAT)
Check stock
1
82.026 OMR
82.026 OMR Each (ex VAT)
Check stock
1
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