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 1253 products
RS Stock No.: 132-174Brand: RS PRO
€ 29.04
€ 29.04 Each (Exc. Vat)
Check stock
1
RS Stock No.: 132-171Brand: RS PRO
€ 26.62
€ 26.62 Each (Exc. Vat)
Check stock
1
RS Stock No.: 122-217Brand: RS PRO
€ 13.19
€ 13.19 Each (Exc. Vat)
Check stock
1
RS Stock No.: 132-172Brand: RS PRO
€ 17.91
€ 17.91 Each (Exc. Vat)
Check stock
1
RS Stock No.: 132-173Brand: RS PRO
€ 22.38
€ 22.38 Each (Exc. Vat)
Check stock
1
RS Stock No.: 122-216Brand: RS PRO
€ 18.03
€ 18.03 Each (Exc. Vat)
Check stock
1
RS Stock No.: 122-210Brand: RS PRO
€ 20.57
€ 20.57 Each (Exc. Vat)
Check stock
1
RS Stock No.: 122-215Brand: RS PRO
€ 27.47
€ 27.47 Each (Exc. Vat)
Check stock
1
RS Stock No.: 122-212Brand: RS PRO
€ 24.20
€ 24.20 Each (Exc. Vat)
Check stock
1
RS Stock No.: 102-6130Brand: RS PRO
€ 77.44
€ 77.44 Each (Exc. Vat)
Check stock
1
RS Pro
-
Voltage
-
1
-
-
SPDT
12 → 24V dc
-
Undervoltage
-
DIN Rail
-
-
-
-
-
-
0 → 30s
-
-
-
L
1
-
17.5mm
+60°C
Screw
-
24V dc
-
12V dc
-
-
-
-20°C
89mm
+60°C
17.5 x 66.5 x 89mm
-
66.5mm
RS Stock No.: 102-6136Brand: RS PRO
€ 84.70
€ 84.70 Each (Exc. Vat)
Check stock
1
RS Pro
-
Phase, Voltage
-
3
-
-
SPDT
-
-
Undervoltage
-
DIN Rail
-
-
-
-
-
Phase Failure, Phase Sequence
0.2 → 10s
48 → 63Hz
-
-
L
1
-
17.5mm
+60°C
Screw
-
-
-
-
-
-
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
-20°C
89mm
+60°C
17.5 x 66.5 x 89mm
-
66.5mm
RS Stock No.: 223-7792Brand: RS PRO
€ 122.21
€ 122.21 Each (Exc. Vat)
Check stock
1
RS Pro
-
Phase
-
3
-
-
SPDT
-
-
Overvoltage Protection, Undervoltage Protection
-
DIN Rail
-
-
-
-
-
-
-
-
-
-
-
-
-
90mm
-20 → +60°C
Screw
-
-
-
-
-
-
-
-20°C
-
+60°C
17.5 x 90 x 66.5mm
-
66.5mm
RS Stock No.: 223-7795Brand: RS PRO
€ 140.36
€ 140.36 Each (Exc. Vat)
Check stock
1
RS Pro
-
Phase
-
3
-
-
SPDT
Phase Loss, Voltage Assemmetry
-
-
-
DIN Rail
-
-
-
-
-
-
-
-
-
-
-
-
-
90mm
-20 → +60°C
Screw
-
-
-
-
-
-
-
-20°C
-
+60°C
17.5 x 90 x 66.5mm
-
66.5mm
RS Stock No.: 102-6135Brand: RS PRO
€ 81.07
€ 81.07 Each (Exc. Vat)
Check stock
1
RS Pro
-
Phase, Voltage
-
3
-
-
SPDT
Maximum of 280 V
-
Undervoltage
-
DIN Rail
-
-
-
-
-
Phase Failure, Phase Sequence
100ms
48 → 63Hz
-
-
L
1
-
17.5mm
+60°C
Screw
-
280V
-
-
-
-
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
-20°C
89mm
+60°C
17.5 x 66.5 x 89mm
-
66.5mm
RS Stock No.: 223-7790Brand: RS PRO
€ 171.82
€ 171.82 Each (Exc. Vat)
Check stock
1
RS Pro
-
Voltage
-
3
-
-
DPDT
-
-
Overvoltage Protection, Undervoltage Protection
-
DIN Rail
-
-
-
-
-
-
2 → 999s
-
-
-
-
-
-
36mm
-10 → +60°C
Screw
-
-
-
-
-
-
-
-10°C
90mm
+60°C
36 x 90 x 67mm
-
66.21mm
RS Stock No.: 223-7789Brand: RS PRO
€ 159.72
€ 159.72 Each (Exc. Vat)
Check stock
1
RS Pro
-
Voltage
-
3
-
-
DPDT
-
-
Overvoltage Protection, Undervoltage Protection
-
DIN Rail
-
-
-
-
-
-
2 → 999s
-
-
-
-
-
-
36mm
-10 → +60°C
Screw
-
-
-
-
-
-
-
-10°C
-
+60°C
36 x 90 x 67mm
-
66.21mm
RS Stock No.: 223-7788Brand: RS PRO
€ 148.83
€ 148.83 Each (Exc. Vat)
Check stock
1
RS Pro
-
Phase, Voltage
-
3
-
-
SPDT
-
-
Overvoltage Protection, Undervoltage Protection
-
DIN Rail
-
-
-
-
-
Phase Loss, Phase Sequence, Phase Asymmetry
2 → 999s
-
-
-
-
-
-
36mm
-10 → +60°C
Screw
-
-
-
-
65Hz
-
-
-10°C
-
+60°C
36 x 90 x 67mm
45Hz
66.21mm
RS Stock No.: 223-7791Brand: RS PRO
€ 142.78
€ 142.78 Each (Exc. Vat)
Check stock
1
RS Pro
-
Phase
-
3
-
-
SPDT
-
-
Overvoltage Protection, Undervoltage Protection
-
DIN Rail
-
-
-
-
-
-
-
-
-
-
-
-
-
90mm
-20 → +60°C
Screw
-
-
-
-
-
-
-
-20°C
-
+60°C
17.5 x 90 x 66.5mm
-
66.5mm
RS Stock No.: 102-6133Brand: RS PRO
€ 148.83
€ 148.83 Each (Exc. Vat)
Check stock
1
RS Pro
-
Voltage
-
1
-
-
SPDT
Maximum of 500 V
-
Overvoltage, Undervoltage
-
DIN Rail
-
-
-
-
-
-
0.1 → 30s
48 → 63Hz
-
-
L
1
-
17.5mm
+60°C
Screw
-
500V
-
-
-
-
-
-20°C
89mm
+60°C
17.5 x 66.5 x 89mm
-
66.5mm
RS Stock No.: 102-6134Brand: RS PRO
€ 148.83
€ 148.83 Each (Exc. Vat)
Check stock
1
RS Pro
-
Current
-
1
-
-
SPDT
-
-
-
-
DIN Rail
-
1A
10A
-
Overcurrent, Undercurrent
-
0.1 → 30s
48 → 63Hz
-
-
L
1
-
17.5mm
+60°C
Screw
1 → 10A
-
-
-
-
-
Green LED Indication for Supply Status
-20°C
89mm
+60°C
66.5 x 17.5 x 89mm
-
66.5mm
...