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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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RS PRO Phase Monitoring Relay, 3 Phase, SPDT, DIN Rail
RS Stock No.: 223-7794Brand: RS PRO

BD 49.671

Each (Exc. Vat)

Add to basket
RS Pro
Phase
3
SPDT
-
-
Overvoltage Protection, Undervoltage Protection
DIN Rail
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
66.5mm
90mm
-20°C
-
Screw
17.5 x 90 x 66.5mm
-
-
-
-
-
-
+60°C
-20 → +60°C
RS PRO Phase Monitoring Relay, 3 Phase, SPDT, DIN Rail
RS Stock No.: 223-7792Brand: RS PRO

BD 49.671

Each (Exc. Vat)

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

BD 55.181

Each (Exc. Vat)

Add to basket
RS Pro
Phase
3
SPDT
Phase Loss, Voltage Assemmetry
-
-
DIN Rail
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
66.5mm
90mm
-20°C
-
Screw
17.5 x 90 x 66.5mm
-
-
-
-
-
-
+60°C
-20 → +60°C
RS PRO Voltage Monitoring Relay, 3 Phase, DPDT, DIN Rail
RS Stock No.: 223-7789Brand: RS PRO

BD 63.239

Each (Exc. Vat)

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

BD 67.705

Each (Exc. Vat)

Add to basket
RS Pro
Voltage
3
DPDT
-
-
Overvoltage Protection, Undervoltage Protection
DIN Rail
-
-
-
-
-
-
2 → 999s
-
-
-
-
-
90mm
-
-
66.21mm
36mm
-10°C
-
Screw
36 x 90 x 67mm
-
-
-
-
-
-
+60°C
-10 → +60°C
RS PRO Phase, Voltage Monitoring Relay, 3 Phase, SPDT, DIN Rail
RS Stock No.: 223-7788Brand: RS PRO

BD 58.767

Each (Exc. Vat)

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

BD 56.161

Each (Exc. Vat)

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

BD 57.129

Each (Exc. Vat)

Add to basket
RS Pro
Phase, Voltage
3
DPDT
243 → 540 V
-
Undervoltage
DIN Rail, Surface Mount
-
-
-
-
-
Phase Failure, Phase Sequence
0.2 → 10s
-
-
-
-
Microprocessor Based, Detects Incorrect Phase Sequence, Phase Loss And Neutral Loss, Adjustment For Under Voltage Trip Level, Adjustment For Time Delay
66.5mm
-
-
89mm
17.5mm
-20°C
-
Screw
89 x 17.5 x 66.5mm
-
540V
-
-
243 V
-
+60°C
-20 → +60°C
RS PRO Phase Monitoring Relay, 3 Phase, DIN Rail, Surface Mount
RS Stock No.: 225-7384Brand: RS PRO

BD 28.957

Each (Exc. Vat)

Add to basket
RS Pro
Phase
3
-
-
-
-
DIN Rail, Surface Mount
-
-
-
-
-
Phase Failure, Phase Sequence
-
-
-
-
-
3 LEDs for Phase presence status, Sequence Status,
-
-
-
66.5mm
17.5mm
-20°C
-
Screw
-
-
-
-
-
-
-
+60°C
-20 → +60°C
RS PRO Phase, Voltage Monitoring Relay, 3 Phase, DPDT, DIN Rail
RS Stock No.: 225-7387Brand: RS PRO

BD 57.569

Each (Exc. Vat)

Add to basket
RS Pro
Phase, Voltage
3
DPDT
-
-
Overvoltage, Undervoltage
DIN Rail
-
-
-
-
-
Phase Failure, Phase Sequence
-
-
-
-
-
-
-
-
-
-
17.5mm
-
-
Screw
-
-
-
-
-
-
-
-
-
RS PRO Voltage Monitoring Relay, 3 Phase, DPDT, DIN Rail
RS Stock No.: 225-7386Brand: RS PRO

BD 51.815

Each (Exc. Vat)

Add to basket
RS Pro
Voltage
3
DPDT
-
-
Overvoltage, Undervoltage
DIN Rail
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
17.5mm
-
-
Screw
-
-
-
-
-
-
-
-
-

BD 30.629

Each (Exc. Vat)

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

BD 33.413

Each (Exc. Vat)

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

BD 31.911

Each (Exc. Vat)

Add to basket
RS Pro
Phase, Voltage
3
SPDT
Maximum of 280 V
-
Undervoltage
DIN Rail
-
-
-
-
-
Phase Failure, Phase Sequence
100ms
48 → 63Hz
-
-
L
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
89mm
1
-
66.5mm
17.5mm
-20°C
-
Screw
17.5 x 66.5 x 89mm
-
280V
-
-
-
-
+60°C
+60°C

BD 58.823

Each (Exc. Vat)

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

BD 58.823

Each (Exc. Vat)

Add to basket
RS Pro
Current
1
SPDT
-
-
-
DIN Rail
-
1A
10A
-
Overcurrent, Undercurrent
-
0.1 → 30s
48 → 63Hz
-
-
L
Green LED Indication for Supply Status
89mm
1
-
66.5mm
17.5mm
-20°C
1 → 10A
Screw
66.5 x 17.5 x 89mm
-
-
-
-
-
-
+60°C
+60°C
RS PRO Phase, Voltage Monitoring Relay, 3 Phase, SPDT, DIN Rail
RS Stock No.: 102-6137Brand: RS PRO

BD 43.181

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
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
89mm
1
-
66.5mm
17.5mm
-20°C
-
Screw
17.5 x 66.5 x 89mm
-
-
-
-
-
-
+60°C
+60°C
RS PRO Voltage Monitoring Relay, 1 Phase, SPDT, DIN Rail
RS Stock No.: 102-6131Brand: RS PRO

BD 33.281

Each (Exc. Vat)

Add to basket
RS Pro
Voltage
1
SPDT
-
-
Overvoltage, Undervoltage
DIN Rail
-
-
-
-
-
-
0.2 → 10s
48 → 63Hz
-
-
L
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
89mm
1
63Hz
66.5mm
17.5mm
-20°C
-
Screw
17.5 x 66.5 x 89mm
-
-
48Hz
-
-
-
+60°C
+60°C
MODEM DDW-120
MODEM DDW-120
Add to parts list
RS Stock No.: 150-432Brand: Westermo Data CommunicationsManufacturers Part No.: 3621-0110

BD 922.845

Each (Exc. Vat)

Add to basket
Westermo Data Communications
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Monitoring Relay, 195 → 264V ac, Plug In
RS Stock No.: 129-771Brand: Phoenix ContactManufacturers Part No.: 2885294

BD 6.825

Each (Exc. Vat)

Add to basket
Phoenix Contact
-
-
-
195 → 264V ac
-
-
Plug In
-
-
-
-
-
-
-
-
-
-
-
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-
-
-
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-
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