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 1247 products
RS Stock No.: 132-174Brand: RS PRO
€ 23.28
€ 23.28 Each (ex VAT)
Check stock
1
RS Stock No.: 132-171Brand: RS PRO
€ 21.38
€ 21.38 Each (ex VAT)
Check stock
1
RS Stock No.: 122-217Brand: RS PRO
€ 10.55
€ 10.55 Each (ex VAT)
Check stock
1
RS Stock No.: 132-172Brand: RS PRO
€ 14.38
€ 14.38 Each (ex VAT)
Check stock
1
RS Stock No.: 132-173Brand: RS PRO
€ 18.01
€ 18.01 Each (ex VAT)
Check stock
1
RS Stock No.: 122-216Brand: RS PRO
€ 14.48
€ 14.48 Each (ex VAT)
Check stock
1
RS Stock No.: 122-210Brand: RS PRO
€ 16.52
€ 16.52 Each (ex VAT)
Check stock
1
RS Stock No.: 122-215Brand: RS PRO
€ 22.08
€ 22.08 Each (ex VAT)
Check stock
1
RS Stock No.: 122-212Brand: RS PRO
€ 19.42
€ 19.42 Each (ex VAT)
Check stock
1
RS Stock No.: 102-6130Brand: RS PRO
€ 62.30
€ 62.30 Each (ex VAT)
Check stock
1
RS Pro
Voltage
-
-
1
-
SPDT
-
12 → 24V dc
-
Undervoltage
-
-
DIN Rail
-
-
-
-
-
0 → 30s
-
-
-
L
66.5mm
17.5 x 66.5 x 89mm
1
+60°C
-
-20°C
-
-
Screw
-
17.5mm
-
24V dc
-
12V dc
-
+60°C
89mm
RS Stock No.: 102-6136Brand: RS PRO
€ 67.97
€ 67.97 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
66.5mm
17.5 x 66.5 x 89mm
1
+60°C
-
-20°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
-
-
-
-
-
+60°C
89mm
RS Stock No.: 223-7795Brand: RS PRO
€ 112.24
€ 112.24 Each (ex VAT)
Check stock
1
RS Pro
Phase
-
-
3
-
SPDT
-
Phase Loss, Voltage Assemmetry
-
-
-
-
DIN Rail
-
-
-
-
-
-
-
-
-
-
66.5mm
17.5 x 90 x 66.5mm
-
-20 → +60°C
-
-20°C
-
-
Screw
-
90mm
-
-
-
-
-
+60°C
-
RS Stock No.: 102-6135Brand: RS PRO
€ 64.91
€ 64.91 Each (ex 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
66.5mm
17.5 x 66.5 x 89mm
1
+60°C
-
-20°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
-
280V
-
-
-
+60°C
89mm
RS Stock No.: 223-7790Brand: RS PRO
€ 137.71
€ 137.71 Each (ex VAT)
Check stock
1
RS Pro
Voltage
-
-
3
-
DPDT
-
-
-
Overvoltage Protection, Undervoltage Protection
-
-
DIN Rail
-
-
-
-
-
2 → 999s
-
-
-
-
66.21mm
36 x 90 x 67mm
-
-10 → +60°C
-
-10°C
-
-
Screw
-
36mm
-
-
-
-
-
+60°C
90mm
RS Stock No.: 223-7789Brand: RS PRO
€ 128.63
€ 128.63 Each (ex VAT)
Check stock
1
RS Pro
Voltage
-
-
3
-
DPDT
-
-
-
Overvoltage Protection, Undervoltage Protection
-
-
DIN Rail
-
-
-
-
-
2 → 999s
-
-
-
-
66.21mm
36 x 90 x 67mm
-
-10 → +60°C
-
-10°C
-
-
Screw
-
36mm
-
-
-
-
-
+60°C
-
RS Stock No.: 223-7788Brand: RS PRO
€ 119.53
€ 119.53 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
-
-
-
-
66.21mm
36 x 90 x 67mm
-
-10 → +60°C
45Hz
-10°C
-
-
Screw
-
36mm
-
-
65Hz
-
-
+60°C
-
RS Stock No.: 223-7791Brand: RS PRO
€ 114.23
€ 114.23 Each (ex VAT)
Check stock
1
RS Pro
Phase
-
-
3
-
SPDT
-
-
-
Overvoltage Protection, Undervoltage Protection
-
-
DIN Rail
-
-
-
-
-
-
-
-
-
-
66.5mm
17.5 x 90 x 66.5mm
-
-20 → +60°C
-
-20°C
-
-
Screw
-
90mm
-
-
-
-
-
+60°C
-
RS Stock No.: 102-6133Brand: RS PRO
€ 119.65
€ 119.65 Each (ex VAT)
Check stock
1
RS Pro
Voltage
-
-
1
-
SPDT
-
Maximum of 500 V
-
Overvoltage, Undervoltage
-
-
DIN Rail
-
-
-
-
-
0.1 → 30s
48 → 63Hz
-
-
L
66.5mm
17.5 x 66.5 x 89mm
1
+60°C
-
-20°C
-
-
Screw
-
17.5mm
-
500V
-
-
-
+60°C
89mm
RS Stock No.: 102-6134Brand: RS PRO
€ 119.65
€ 119.65 Each (ex VAT)
Check stock
1
RS Pro
Current
-
-
1
-
SPDT
-
-
-
-
-
-
DIN Rail
1A
10A
-
Overcurrent, Undercurrent
-
0.1 → 30s
48 → 63Hz
-
-
L
66.5mm
66.5 x 17.5 x 89mm
1
+60°C
-
-20°C
Green LED Indication for Supply Status
1 → 10A
Screw
-
17.5mm
-
-
-
-
-
+60°C
89mm
RS Stock No.: 102-6137Brand: RS PRO
€ 87.82
€ 87.82 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
66.5mm
17.5 x 66.5 x 89mm
1
+60°C
-
-20°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
-
-
-
-
-
+60°C
89mm
...