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 1256 products
RS Stock No.: 132-174Brand: RS PRO
€ 30.26
€ 30.26 Each (Exc. Vat)
Check stock
1
RS Stock No.: 132-171Brand: RS PRO
€ 27.90
€ 27.90 Each (Exc. Vat)
Check stock
1
RS Stock No.: 122-217Brand: RS PRO
€ 13.76
€ 13.76 Each (Exc. Vat)
Check stock
1
RS Stock No.: 122-216Brand: RS PRO
€ 18.85
€ 18.85 Each (Exc. Vat)
Check stock
1
RS Stock No.: 132-172Brand: RS PRO
€ 18.72
€ 18.72 Each (Exc. Vat)
Check stock
1
RS Stock No.: 132-173Brand: RS PRO
€ 23.44
€ 23.44 Each (Exc. Vat)
Check stock
1
RS Stock No.: 122-210Brand: RS PRO
€ 21.45
€ 21.45 Each (Exc. Vat)
Check stock
1
RS Stock No.: 122-215Brand: RS PRO
€ 28.77
€ 28.77 Each (Exc. Vat)
Check stock
1
RS Stock No.: 122-212Brand: RS PRO
€ 25.30
€ 25.30 Each (Exc. Vat)
Check stock
1
RS Stock No.: 102-6130Brand: RS PRO
€ 81.22
€ 81.22 Each (Exc. Vat)
Check stock
1
RS Pro
-
Voltage
-
-
1
-
SPDT
-
12 → 24V dc
-
Undervoltage
-
-
DIN Rail
-
-
-
-
-
-
-
0 → 30s
-
-
-
-
-
-
-
-
L
-
-
Screw
1
+60°C
-
-
+60°C
-
66.5mm
17.5 x 66.5 x 89mm
17.5mm
89mm
-
24V dc
-
12V dc
-
RS Stock No.: 102-6136Brand: RS PRO
€ 88.66
€ 88.66 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
-
-
Screw
1
+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
+60°C
-
66.5mm
17.5 x 66.5 x 89mm
17.5mm
89mm
-
-
-
-
-
RS Stock No.: 223-7792Brand: RS PRO
€ 127.72
€ 127.72 Each (Exc. Vat)
Check stock
1
RS Pro
-
Phase
-
-
3
-
SPDT
-
-
-
Overvoltage Protection, Undervoltage Protection
-
-
DIN Rail
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Screw
-
-20 → +60°C
-
-
+60°C
-
66.5mm
17.5 x 90 x 66.5mm
90mm
-
-
-
-
-
-
RS Stock No.: 223-7795Brand: RS PRO
€ 146.32
€ 146.32 Each (Exc. Vat)
Check stock
1
RS Pro
-
Phase
-
-
3
-
SPDT
-
Phase Loss, Voltage Assemmetry
-
-
-
-
DIN Rail
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Screw
-
-20 → +60°C
-
-
+60°C
-
66.5mm
17.5 x 90 x 66.5mm
90mm
-
-
-
-
-
-
RS Stock No.: 102-6135Brand: RS PRO
€ 84.32
€ 84.32 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
-
-
Screw
1
+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
+60°C
-
66.5mm
17.5 x 66.5 x 89mm
17.5mm
89mm
-
280V
-
-
-
RS Stock No.: 223-7790Brand: RS PRO
€ 179.80
€ 179.80 Each (Exc. Vat)
Check stock
1
RS Pro
-
Voltage
-
-
3
-
DPDT
-
-
-
Overvoltage Protection, Undervoltage Protection
-
-
DIN Rail
-
-
-
-
-
-
-
2 → 999s
-
-
-
-
-
-
-
-
-
-
-
Screw
-
-10 → +60°C
-
-
+60°C
-
66.21mm
36 x 90 x 67mm
36mm
90mm
-
-
-
-
-
RS Stock No.: 223-7789Brand: RS PRO
€ 167.40
€ 167.40 Each (Exc. Vat)
Check stock
1
RS Pro
-
Voltage
-
-
3
-
DPDT
-
-
-
Overvoltage Protection, Undervoltage Protection
-
-
DIN Rail
-
-
-
-
-
-
-
2 → 999s
-
-
-
-
-
-
-
-
-
-
-
Screw
-
-10 → +60°C
-
-
+60°C
-
66.21mm
36 x 90 x 67mm
36mm
-
-
-
-
-
-
RS Stock No.: 223-7788Brand: RS PRO
€ 155.00
€ 155.00 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
-
-
-
-
-
-
-
-
-
-
-
Screw
-
-10 → +60°C
-
-
+60°C
45Hz
66.21mm
36 x 90 x 67mm
36mm
-
-
-
-
-
-
RS Stock No.: 223-7791Brand: RS PRO
€ 148.80
€ 148.80 Each (Exc. Vat)
Check stock
1
RS Pro
-
Phase
-
-
3
-
SPDT
-
-
-
Overvoltage Protection, Undervoltage Protection
-
-
DIN Rail
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Screw
-
-20 → +60°C
-
-
+60°C
-
66.5mm
17.5 x 90 x 66.5mm
90mm
-
-
-
-
-
-
RS Stock No.: 102-6133Brand: RS PRO
€ 156.24
€ 156.24 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
-
-
Screw
1
+60°C
-
-
+60°C
-
66.5mm
17.5 x 66.5 x 89mm
17.5mm
89mm
-
500V
-
-
-
RS Stock No.: 102-6134Brand: RS PRO
€ 156.24
€ 156.24 Each (Exc. Vat)
Check stock
1
RS Pro
-
Current
-
-
1
-
SPDT
-
-
-
-
-
-
DIN Rail
-
1A
-
10A
Overcurrent, Undercurrent
-
-
0.1 → 30s
-
-
48 → 63Hz
-
-
-
-
-
L
-
-
Screw
1
+60°C
-
Green LED Indication for Supply Status
+60°C
-
66.5mm
66.5 x 17.5 x 89mm
17.5mm
89mm
1 → 10A
-
-
-
-
...