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 13.455

BD 13.455 Each (Exc. Vat)

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

BD 12.439 Each (Exc. Vat)

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

BD 6.014 Each (Exc. Vat)

Add to basket
RS Pro
Phase
-
-
Three
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-
150 → 260V ac
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-
-
DIN Rail
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-
-
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-
-
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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
Phase
-
-
Three
-
-
380V ac
-
-
-
DIN Rail
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-
-
-
-
-
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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
Phase
-
-
Three
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-
380V ac
-
-
-
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
Phase
-
-
Three
-
-
380V ac
-
-
-
DIN Rail
-
-
-
-
-
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BD 12.306

BD 12.306 Each (Exc. Vat)

Add to basket
RS Pro
Voltage
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-
Single
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-
220V 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
Voltage
-
-
Single
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-
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
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
Voltage
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-
1
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-
12 → 24V dc
SPDT
-
Undervoltage
DIN Rail
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-
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-
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-
0 → 30s
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L
-
-
Screw
-20°C
89mm
17.5 x 66.5 x 89mm
1
17.5mm
66.5mm
-
-
-
-
24V dc
-
12V dc
-
+60°C
+60°C
-

BD 37.861

BD 37.861 Each (Exc. Vat)

Add to basket
RS Pro
Phase, Voltage
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-
3
-
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-
SPDT
-
Undervoltage
DIN Rail
-
-
-
-
-
-
Phase Failure, Phase Sequence
0.2 → 10s
48 → 63Hz
-
-
L
-
-
Screw
-20°C
89mm
17.5 x 66.5 x 89mm
1
17.5mm
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
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-
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-
+60°C
+60°C
-

BD 62.521

BD 62.521 Each (Exc. Vat)

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

BD 36.161

BD 36.161 Each (Exc. Vat)

Add to basket
RS Pro
Phase, Voltage
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-
3
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Maximum of 280 V
SPDT
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Undervoltage
DIN Rail
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-
-
-
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-
Phase Failure, Phase Sequence
100ms
48 → 63Hz
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-
L
-
-
Screw
-20°C
89mm
17.5 x 66.5 x 89mm
1
17.5mm
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
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-
280V
-
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-
+60°C
+60°C
-
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
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-
3
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-
-
DPDT
-
Overvoltage Protection, Undervoltage Protection
DIN Rail
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-
-
-
-
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2 → 999s
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Screw
-10°C
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36 x 90 x 67mm
-
36mm
66.21mm
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-
-
-
-
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-
+60°C
-10 → +60°C
-
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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-
-
-
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-
Screw
-10°C
90mm
36 x 90 x 67mm
-
36mm
66.21mm
-
-
-
-
-
-
-
-
+60°C
-10 → +60°C
-
RS PRO Phase, Voltage Monitoring Relay, 3 Phase, SPDT, DIN Rail
RS Stock No.: 223-7788Brand: RS PRO

BD 66.581

BD 66.581 Each (Exc. Vat)

Add to basket
RS Pro
Phase, Voltage
-
-
3
-
-
-
SPDT
-
Overvoltage Protection, Undervoltage Protection
DIN Rail
-
-
-
-
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-
Phase Loss, Phase Sequence, Phase Asymmetry
2 → 999s
-
-
-
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-
45Hz
Screw
-10°C
-
36 x 90 x 67mm
-
36mm
66.21mm
-
-
-
-
-
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-
65Hz
+60°C
-10 → +60°C
-
RS PRO Phase Monitoring Relay, 3 Phase, SPDT, DIN Rail
RS Stock No.: 223-7791Brand: RS PRO

BD 63.634

BD 63.634 Each (Exc. Vat)

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

BD 66.653

BD 66.653 Each (Exc. Vat)

Add to basket
RS Pro
Voltage
-
-
1
-
-
Maximum of 500 V
SPDT
-
Overvoltage, Undervoltage
DIN Rail
-
-
-
-
-
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-
0.1 → 30s
48 → 63Hz
-
-
L
-
-
Screw
-20°C
89mm
17.5 x 66.5 x 89mm
1
17.5mm
66.5mm
-
-
-
-
500V
-
-
-
+60°C
+60°C
-
RS PRO Current Monitoring Relay, 1 Phase, SPDT, DIN Rail
RS Stock No.: 102-6134Brand: RS PRO

BD 66.653

BD 66.653 Each (Exc. Vat)

Add to basket
RS Pro
Current
-
-
1
-
-
-
SPDT
-
-
DIN Rail
-
-
1A
10A
-
Overcurrent, Undercurrent
-
0.1 → 30s
48 → 63Hz
-
-
L
-
-
Screw
-20°C
89mm
66.5 x 17.5 x 89mm
1
17.5mm
66.5mm
-
Green LED Indication for Supply Status
1 → 10A
-
-
-
-
-
+60°C
+60°C
-

BD 48.920

BD 48.920 Each (Exc. Vat)

Add to basket
RS Pro
Phase, Voltage
-
-
3
-
-
-
SPDT
-
Overvoltage, Undervoltage
DIN Rail
-
-
-
-
-
-
Phase Failure, Phase Sequence
0.2 → 10s
48 → 63Hz
-
-
L
-
-
Screw
-20°C
89mm
17.5 x 66.5 x 89mm
1
17.5mm
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
-
-
-
-
-
-
+60°C
+60°C
-

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