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 33 products
RS Stock No.: 132-172Brand: RS PRO
BD 9.105
BD 9.105 Each (Exc. Vat)
Check stock
1
RS Stock No.: 132-173Brand: RS PRO
BD 11.398
BD 11.398 Each (Exc. Vat)
Check stock
1
RS Stock No.: 122-216Brand: RS PRO
BD 9.167
BD 9.167 Each (Exc. Vat)
Check stock
1
RS Stock No.: 122-210Brand: RS PRO
BD 10.453
BD 10.453 Each (Exc. Vat)
Check stock
1
RS Stock No.: 122-215Brand: RS PRO
BD 13.971
BD 13.971 Each (Exc. Vat)
Check stock
1
RS Stock No.: 122-212Brand: RS PRO
BD 12.294
BD 12.294 Each (Exc. Vat)
Check stock
1
RS Stock No.: 132-174Brand: RS PRO
BD 14.729
BD 14.729 Each (Exc. Vat)
Check stock
1
RS Stock No.: 132-171Brand: RS PRO
BD 13.574
BD 13.574 Each (Exc. Vat)
Check stock
1
RS Stock No.: 122-217Brand: RS PRO
BD 6.675
BD 6.675 Each (Exc. Vat)
Check stock
1
RS Stock No.: 102-6136Brand: RS PRO
BD 43.026
BD 43.026 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
-
89mm
-
-
-
-
-
-
-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
-
+60°C
17.5mm
Screw
+60°C
1
17.5 x 66.5 x 89mm
RS Stock No.: 102-6135Brand: RS PRO
BD 41.087
BD 41.087 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
-
89mm
280V
-
-
-
-
-
-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
-
+60°C
17.5mm
Screw
+60°C
1
17.5 x 66.5 x 89mm
RS Stock No.: 102-6133Brand: RS PRO
BD 75.743
BD 75.743 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
-
89mm
500V
-
-
-
-
-
-20°C
-
-
+60°C
17.5mm
Screw
+60°C
1
17.5 x 66.5 x 89mm
RS Stock No.: 102-6137Brand: RS PRO
BD 55.593
BD 55.593 Each (Exc. Vat)
Check stock
1
RS Pro
Phase, Voltage
-
-
-
3
-
-
SPDT
-
Overvoltage, Undervoltage
-
-
DIN Rail
-
-
-
-
-
-
-
Phase Failure, Phase Sequence
0.2 → 10s
-
-
48 → 63Hz
-
-
-
-
-
-
L
-
89mm
-
-
-
-
-
-
-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
-
+60°C
17.5mm
Screw
+60°C
1
17.5 x 66.5 x 89mm
RS Stock No.: 102-6131Brand: RS PRO
BD 42.846
BD 42.846 Each (Exc. Vat)
Check stock
1
RS Pro
Voltage
-
-
-
1
-
-
SPDT
-
Overvoltage, Undervoltage
-
-
DIN Rail
-
-
-
-
-
-
-
-
0.2 → 10s
-
-
48 → 63Hz
-
-
-
-
-
-
L
-
89mm
-
-
-
-
48Hz
-
-20°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
-
+60°C
17.5mm
Screw
+60°C
1
17.5 x 66.5 x 89mm
RS Stock No.: 223-7790Brand: RS PRO
BD 87.178
BD 87.178 Each (Exc. Vat)
Check stock
1
RS Pro
Voltage
-
-
-
3
-
-
DPDT
-
Overvoltage Protection, Undervoltage Protection
-
-
DIN Rail
-
-
-
-
-
-
-
-
2 → 999s
-
-
-
-
-
-
-
-
-
-
-
90mm
-
-
-
-
-
-
-10°C
-
-
+60°C
36mm
Screw
-10 → +60°C
-
36 x 90 x 67mm
RS Stock No.: 223-7792Brand: RS PRO
BD 62.088
BD 62.088 Each (Exc. Vat)
Check stock
1
RS Pro
Phase
-
-
-
3
-
-
SPDT
-
Overvoltage Protection, Undervoltage Protection
-
-
DIN Rail
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-20°C
-
-
+60°C
90mm
Screw
-20 → +60°C
-
17.5 x 90 x 66.5mm
RS Stock No.: 223-7789Brand: RS PRO
BD 81.423
BD 81.423 Each (Exc. Vat)
Check stock
1
RS Pro
Voltage
-
-
-
3
-
-
DPDT
-
Overvoltage Protection, Undervoltage Protection
-
-
DIN Rail
-
-
-
-
-
-
-
-
2 → 999s
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-10°C
-
-
+60°C
36mm
Screw
-10 → +60°C
-
36 x 90 x 67mm
RS Stock No.: 223-7788Brand: RS PRO
BD 75.661
BD 75.661 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
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
65Hz
-
-10°C
-
-
+60°C
36mm
Screw
-10 → +60°C
-
36 x 90 x 67mm
RS Stock No.: 223-7791Brand: RS PRO
BD 72.312
BD 72.312 Each (Exc. Vat)
Check stock
1
RS Pro
Phase
-
-
-
3
-
-
SPDT
-
Overvoltage Protection, Undervoltage Protection
-
-
DIN Rail
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-20°C
-
-
+60°C
90mm
Screw
-20 → +60°C
-
17.5 x 90 x 66.5mm
RS Stock No.: 225-7384Brand: RS PRO
BD 37.278
BD 37.278 Each (Exc. Vat)
Check stock
1
RS Pro
Phase
-
-
-
3
-
-
-
-
-
-
-
DIN Rail, Surface Mount
-
-
-
-
-
-
-
Phase Failure, Phase Sequence
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-20°C
3 LEDs for Phase presence status, Sequence Status,
-
+60°C
17.5mm
Screw
-20 → +60°C
-
-