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...

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BD 23.159

BD 23.159 Each (Exc. Vat)

Add to basket
RS Pro
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Voltage
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1
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-
CO
150 → 300V ac
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Overvoltage, Undervoltage
DIN Rail
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Screw
CE, cULus, DEKRA, IEC, IQNet, ISO EN 9000
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BD 22.978

BD 22.978 Each (Exc. Vat)

Add to basket
RS Pro
-
-
Voltage
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1
-
-
CO
150 → 300V ac
-
Overvoltage, Undervoltage
DIN Rail
-
-
-
-
-
-
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-
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Screw
CE, cULus, DEKRA, IEC, IQNet, ISO EN 9000
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BD 16.746

BD 16.746 Each (Exc. Vat)

Add to basket
RS Pro
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-
Voltage
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3
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-
CO
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-
Voltage Asymmetry
DIN Rail
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-
-
-
-
-
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-
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Screw
CE, cULus, DEKRA, IEC, IQNet, ISO EN 9000
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BD 19.996

BD 19.996 Each (Exc. Vat)

Add to basket
RS Pro
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-
Voltage
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3
-
-
CO
-
-
Voltage Asymmetry
DIN Rail
-
-
-
-
-
-
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Screw
CE, cULus, DEKRA, IEC, IQNet, ISO EN 9000
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BD 13.455

BD 13.455 Each (Exc. Vat)

Add to basket
RS Pro
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Current
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Single
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-
150 → 260V ac
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-
DIN Rail
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BD 12.439

BD 12.439 Each (Exc. Vat)

Add to basket
RS Pro
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Liquid Level
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Single
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-
-
150 → 260V ac
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-
DIN Rail
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BD 6.014

BD 6.014 Each (Exc. Vat)

Add to basket
RS Pro
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-
Phase
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Three
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-
-
150 → 260V ac
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-
DIN Rail
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RS PRO Phase Monitoring Relay, Three Phase, 380V ac, DIN Rail
RS Stock No.: 132-172Brand: RS PRO

BD 8.071

BD 8.071 Each (Exc. Vat)

Add to basket
RS Pro
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-
Phase
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Three
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-
-
380V ac
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-
DIN Rail
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RS PRO Phase Monitoring Relay, Three Phase, 380V ac, DIN Rail
RS Stock No.: 132-173Brand: RS PRO

BD 10.171

BD 10.171 Each (Exc. Vat)

Add to basket
RS Pro
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-
Phase
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Three
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-
-
380V ac
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-
DIN Rail
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RS PRO Phase Monitoring Relay, Three Phase, 380V ac, DIN Rail
RS Stock No.: 122-216Brand: RS PRO

BD 8.125

BD 8.125 Each (Exc. Vat)

Add to basket
RS Pro
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-
Phase
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Three
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-
380V ac
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-
DIN Rail
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BD 9.324

BD 9.324 Each (Exc. Vat)

Add to basket
RS Pro
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-
Voltage
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Single
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-
220V ac
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-
DIN Rail
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BD 12.306

BD 12.306 Each (Exc. Vat)

Add to basket
RS Pro
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-
Voltage
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Single
-
-
-
220V ac
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-
DIN Rail
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BD 10.926

BD 10.926 Each (Exc. Vat)

Add to basket
RS Pro
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-
Voltage
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Three
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380V ac
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-
DIN Rail
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BD 34.703

BD 34.703 Each (Exc. Vat)

Add to basket
RS Pro
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-
Voltage
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1
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SPDT
12 → 24V dc
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Undervoltage
DIN Rail
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0 → 30s
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L
-20°C
Screw
-
17.5mm
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-
12V dc
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24V dc
17.5 x 66.5 x 89mm
-
-
+60°C
+60°C
1
89mm
66.5mm
-
RS PRO Phase, Voltage Monitoring Relay, 3 Phase, SPDT, DIN Rail
RS Stock No.: 102-6136Brand: RS PRO

BD 37.861

BD 37.861 Each (Exc. Vat)

Add to basket
RS Pro
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-
Phase, Voltage
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3
-
-
SPDT
-
-
Undervoltage
DIN Rail
-
-
-
-
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Phase Failure, Phase Sequence
0.2 → 10s
48 → 63Hz
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-
L
-20°C
Screw
-
17.5mm
-
-
-
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-
17.5 x 66.5 x 89mm
-
-
+60°C
+60°C
1
89mm
66.5mm
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
RS PRO Phase Monitoring Relay, 3 Phase, SPDT, DIN Rail
RS Stock No.: 223-7792Brand: RS PRO

BD 54.637

BD 54.637 Each (Exc. Vat)

Add to basket
RS Pro
-
-
Phase
-
3
-
-
SPDT
-
-
Overvoltage Protection, Undervoltage Protection
DIN Rail
-
-
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-20°C
Screw
-
90mm
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-
17.5 x 90 x 66.5mm
-
-
+60°C
-20 → +60°C
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-
66.5mm
-

BD 62.521

BD 62.521 Each (Exc. Vat)

Add to basket
RS Pro
-
-
Phase
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3
-
-
SPDT
Phase Loss, Voltage Assemmetry
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-
DIN Rail
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-
-
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-20°C
Screw
-
90mm
-
-
-
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-
17.5 x 90 x 66.5mm
-
-
+60°C
-20 → +60°C
-
-
66.5mm
-

BD 36.161

BD 36.161 Each (Exc. Vat)

Add to basket
RS Pro
-
-
Phase, Voltage
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3
-
-
SPDT
Maximum of 280 V
-
Undervoltage
DIN Rail
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-
-
-
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-
Phase Failure, Phase Sequence
100ms
48 → 63Hz
-
-
L
-20°C
Screw
-
17.5mm
-
-
-
-
280V
17.5 x 66.5 x 89mm
-
-
+60°C
+60°C
1
89mm
66.5mm
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
RS PRO Voltage Monitoring Relay, 3 Phase, DPDT, DIN Rail
RS Stock No.: 223-7789Brand: RS PRO

BD 71.650

BD 71.650 Each (Exc. Vat)

Add to basket
RS Pro
-
-
Voltage
-
3
-
-
DPDT
-
-
Overvoltage Protection, Undervoltage Protection
DIN Rail
-
-
-
-
-
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-
2 → 999s
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-
-10°C
Screw
-
36mm
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-
-
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-
36 x 90 x 67mm
-
-
+60°C
-10 → +60°C
-
-
66.21mm
-
RS PRO Voltage Monitoring Relay, 3 Phase, DPDT, DIN Rail
RS Stock No.: 223-7790Brand: RS PRO

BD 76.714

BD 76.714 Each (Exc. Vat)

Add to basket
RS Pro
-
-
Voltage
-
3
-
-
DPDT
-
-
Overvoltage Protection, Undervoltage Protection
DIN Rail
-
-
-
-
-
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-
2 → 999s
-
-
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-
-10°C
Screw
-
36mm
-
-
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36 x 90 x 67mm
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-
+60°C
-10 → +60°C
-
90mm
66.21mm
-

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