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 1146 products
RS Stock No.: 223-7795Brand: RS PRO
€ 141.48
€ 141.48 Each (ex VAT)
Check stock
1
RS Pro
Phase
3
Phase Loss, Voltage Assemmetry
SPDT
-
-
-
DIN Rail
-
-
-
-
-
-
-
-
-
-
-20°C
-
90mm
Screw
-
-
-
-
-
17.5 x 90 x 66.5mm
-
-
+60°C
-20 → +60°C
-
66.5mm
-
-
RS Stock No.: 223-7789Brand: RS PRO
€ 162.14
€ 162.14 Each (ex VAT)
Check stock
1
RS Pro
Voltage
3
-
DPDT
-
Overvoltage Protection, Undervoltage Protection
-
DIN Rail
-
-
-
-
-
2 → 999s
-
-
-
-
-10°C
-
36mm
Screw
-
-
-
-
-
36 x 90 x 67mm
-
-
+60°C
-10 → +60°C
-
66.21mm
-
-
RS Stock No.: 223-7790Brand: RS PRO
€ 173.60
€ 173.60 Each (ex VAT)
Check stock
1
RS Pro
Voltage
3
-
DPDT
-
Overvoltage Protection, Undervoltage Protection
-
DIN Rail
-
-
-
-
-
2 → 999s
-
-
-
-
-10°C
-
36mm
Screw
-
-
-
-
-
36 x 90 x 67mm
-
-
+60°C
-10 → +60°C
-
66.21mm
90mm
-
RS Stock No.: 223-7788Brand: RS PRO
€ 150.67
€ 150.67 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
-
-
-
-
-10°C
45Hz
36mm
Screw
-
65Hz
-
-
-
36 x 90 x 67mm
-
-
+60°C
-10 → +60°C
-
66.21mm
-
-
RS Stock No.: 223-7791Brand: RS PRO
€ 144.02
€ 144.02 Each (ex VAT)
Check stock
1
RS Pro
Phase
3
-
SPDT
-
Overvoltage Protection, Undervoltage Protection
-
DIN Rail
-
-
-
-
-
-
-
-
-
-
-20°C
-
90mm
Screw
-
-
-
-
-
17.5 x 90 x 66.5mm
-
-
+60°C
-20 → +60°C
-
66.5mm
-
-
RS Stock No.: 225-7388Brand: RS PRO
€ 146.47
€ 146.47 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
-
-
-
-
-20°C
-
17.5mm
Screw
540V
-
-
243 V
-
89 x 17.5 x 66.5mm
-
-
+60°C
-20 → +60°C
Microprocessor Based, Detects Incorrect Phase Sequence, Phase Loss And Neutral Loss, Adjustment For Under Voltage Trip Level, Adjustment For Time Delay
89mm
66.5mm
-
RS Stock No.: 225-7384Brand: RS PRO
€ 74.26
€ 74.26 Each (ex VAT)
Check stock
1
RS Pro
Phase
3
-
-
-
-
-
DIN Rail, Surface Mount
-
-
-
-
Phase Failure, Phase Sequence
-
-
-
-
-
-20°C
-
17.5mm
Screw
-
-
-
-
-
-
-
-
+60°C
-20 → +60°C
3 LEDs for Phase presence status, Sequence Status,
66.5mm
-
-
RS Stock No.: 225-7387Brand: RS PRO
€ 147.62
€ 147.62 Each (ex VAT)
Check stock
1
RS Pro
Phase, Voltage
3
-
DPDT
-
Overvoltage, Undervoltage
-
DIN Rail
-
-
-
-
Phase Failure, Phase Sequence
-
-
-
-
-
-
-
17.5mm
Screw
-
-
-
-
-
-
-
-
-
-
-
-
-
-
RS Stock No.: 225-7386Brand: RS PRO
€ 132.87
€ 132.87 Each (ex VAT)
Check stock
1
RS Stock No.: 102-6130Brand: RS PRO
€ 78.53
€ 78.53 Each (ex VAT)
Check stock
1
RS Pro
Voltage
1
12 → 24V dc
SPDT
-
Undervoltage
-
DIN Rail
-
-
-
-
-
0 → 30s
-
-
-
L
-20°C
-
17.5mm
Screw
24V dc
-
-
12V dc
-
17.5 x 66.5 x 89mm
-
-
+60°C
+60°C
-
66.5mm
89mm
1
RS Stock No.: 102-6136Brand: RS PRO
€ 85.67
€ 85.67 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
-20°C
-
17.5mm
Screw
-
-
-
-
-
17.5 x 66.5 x 89mm
-
-
+60°C
+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
66.5mm
89mm
1
RS Stock No.: 102-6135Brand: RS PRO
€ 81.82
€ 81.82 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
-20°C
-
17.5mm
Screw
280V
-
-
-
-
17.5 x 66.5 x 89mm
-
-
+60°C
+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
66.5mm
89mm
1
RS Stock No.: 102-6133Brand: RS PRO
€ 150.83
€ 150.83 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
-20°C
-
17.5mm
Screw
500V
-
-
-
-
17.5 x 66.5 x 89mm
-
-
+60°C
+60°C
-
66.5mm
89mm
1
RS Stock No.: 102-6134Brand: RS PRO
€ 150.83
€ 150.83 Each (ex VAT)
Check stock
1
RS Pro
Current
1
-
SPDT
-
-
-
DIN Rail
1A
-
10A
Overcurrent, Undercurrent
-
0.1 → 30s
48 → 63Hz
-
-
L
-20°C
-
17.5mm
Screw
-
-
-
-
-
66.5 x 17.5 x 89mm
-
1 → 10A
+60°C
+60°C
Green LED Indication for Supply Status
66.5mm
89mm
1
RS Stock No.: 102-6137Brand: RS PRO
€ 110.72
€ 110.72 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
-20°C
-
17.5mm
Screw
-
-
-
-
-
17.5 x 66.5 x 89mm
-
-
+60°C
+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
66.5mm
89mm
1
RS Stock No.: 102-6131Brand: RS PRO
€ 85.34
€ 85.34 Each (ex VAT)
Check stock
1
RS Pro
Voltage
1
-
SPDT
-
Overvoltage, Undervoltage
-
DIN Rail
-
-
-
-
-
0.2 → 10s
48 → 63Hz
-
-
L
-20°C
63Hz
17.5mm
Screw
-
48Hz
-
-
-
17.5 x 66.5 x 89mm
-
-
+60°C
+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
66.5mm
89mm
1
€ 291.68
€ 291.68 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
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
€ 254.69
€ 254.69 Each (ex VAT)
Check stock
1
€ 173.94
€ 173.94 Each (ex VAT)
Check stock
1
€ 234.15
€ 234.15 Each (ex VAT)
Check stock
1
...