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 1190 products
RS Stock No.: 132-174Brand: RS PRO
P.O.A.
Check stock
1
RS Stock No.: 132-171Brand: RS PRO
P.O.A.
Check stock
1
RS Stock No.: 122-217Brand: RS PRO
P.O.A.
Check stock
1
RS Stock No.: 132-172Brand: RS PRO
P.O.A.
Check stock
1
RS Stock No.: 132-173Brand: RS PRO
P.O.A.
Check stock
1
RS Stock No.: 122-216Brand: RS PRO
P.O.A.
Check stock
1
RS Stock No.: 122-210Brand: RS PRO
P.O.A.
Check stock
1
RS Stock No.: 122-215Brand: RS PRO
P.O.A.
Check stock
1
RS Stock No.: 122-212Brand: RS PRO
P.O.A.
Check stock
1
RS Stock No.: 223-7795Brand: RS PRO
P.O.A.
Check stock
1
RS Pro
Phase
3
SPDT
Phase Loss, Voltage Assemmetry
-
-
DIN Rail
-
-
-
-
-
-
-
-
-
-
-
-
+60°C
Screw
-
-
-
-
-
-20°C
-
17.5 x 90 x 66.5mm
-20 → +60°C
-
-
-
-
-
90mm
66.5mm
RS Stock No.: 223-7789Brand: RS PRO
P.O.A.
Check stock
1
RS Pro
Voltage
3
DPDT
-
Overvoltage Protection, Undervoltage Protection
-
DIN Rail
-
-
-
-
-
-
2 → 999s
-
-
-
-
-
+60°C
Screw
-
-
-
-
-
-10°C
-
36 x 90 x 67mm
-10 → +60°C
-
-
-
-
-
36mm
66.21mm
RS Stock No.: 223-7790Brand: RS PRO
P.O.A.
Check stock
1
RS Pro
Voltage
3
DPDT
-
Overvoltage Protection, Undervoltage Protection
-
DIN Rail
-
-
-
-
-
-
2 → 999s
-
-
-
-
-
+60°C
Screw
-
-
-
-
-
-10°C
90mm
36 x 90 x 67mm
-10 → +60°C
-
-
-
-
-
36mm
66.21mm
RS Stock No.: 223-7788Brand: RS PRO
P.O.A.
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
-
-
-
-
-
-10°C
-
36 x 90 x 67mm
-10 → +60°C
-
-
-
65Hz
45Hz
36mm
66.21mm
RS Stock No.: 223-7791Brand: RS PRO
P.O.A.
Check stock
1
RS Pro
Phase
3
SPDT
-
Overvoltage Protection, Undervoltage Protection
-
DIN Rail
-
-
-
-
-
-
-
-
-
-
-
-
+60°C
Screw
-
-
-
-
-
-20°C
-
17.5 x 90 x 66.5mm
-20 → +60°C
-
-
-
-
-
90mm
66.5mm
RS Stock No.: 225-7388Brand: RS PRO
P.O.A.
Check stock
1
RS Pro
Phase, Voltage
3
DPDT
243 → 540 V
Undervoltage
-
DIN Rail, Surface Mount
-
-
-
-
-
Phase Failure, Phase Sequence
0.2 → 10s
-
-
-
-
-
+60°C
Screw
-
Microprocessor Based, Detects Incorrect Phase Sequence, Phase Loss And Neutral Loss, Adjustment For Under Voltage Trip Level, Adjustment For Time Delay
-
-
-
-20°C
66.5mm
89 x 17.5 x 66.5mm
-20 → +60°C
-
243 V
540V
-
-
17.5mm
89mm
RS Stock No.: 225-7384Brand: RS PRO
P.O.A.
Check stock
1
RS Pro
Phase
3
-
-
-
-
DIN Rail, Surface Mount
-
-
-
-
-
Phase Failure, Phase Sequence
-
-
-
-
-
-
+60°C
Screw
-
3 LEDs for Phase presence status, Sequence Status,
-
-
-
-20°C
-
-
-20 → +60°C
-
-
-
-
-
17.5mm
66.5mm
RS Stock No.: 225-7387Brand: RS PRO
P.O.A.
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
P.O.A.
Check stock
1
RS Stock No.: 102-6130Brand: RS PRO
P.O.A.
Check stock
1
RS Pro
Voltage
1
SPDT
12 → 24V dc
Undervoltage
-
DIN Rail
-
-
-
-
-
-
0 → 30s
-
-
-
L
-
+60°C
Screw
-
-
-
-
1
-20°C
89mm
17.5 x 66.5 x 89mm
+60°C
-
12V dc
24V dc
-
-
17.5mm
66.5mm
RS Stock No.: 102-6136Brand: RS PRO
P.O.A.
Check stock
1
RS Pro
Phase, Voltage
3
SPDT
-
Undervoltage
-
DIN Rail
-
-
-
-
-
Phase Failure, Phase Sequence
0.2 → 10s
48 → 63Hz
-
-
L
-
+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
-
-
1
-20°C
89mm
17.5 x 66.5 x 89mm
+60°C
-
-
-
-
-
17.5mm
66.5mm
...