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 1123 products

Filter

Sort

Filter

Sort

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

€ 167.71

Each (ex VAT)

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

€ 167.71

Each (ex VAT)

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

€ 186.29

Each (ex VAT)

Add to basket
RS Pro
Phase
3
Phase Loss, Voltage Assemmetry
SPDT
-
-
-
DIN Rail
-
-
-
-
-
-
-
-
-
-
+60°C
66.5mm
-
90mm
17.5 x 90 x 66.5mm
-
-
Screw
-20°C
-
-
-
-
-
-
-
-
-20 → +60°C
RS PRO Voltage Monitoring Relay, 3 Phase, DPDT, DIN Rail
RS Stock No.: 223-7790Brand: RS PRO

€ 228.59

Each (ex VAT)

Add to basket
RS Pro
Voltage
3
-
DPDT
-
Overvoltage Protection, Undervoltage Protection
-
DIN Rail
-
-
-
-
-
2 → 999s
-
-
-
-
+60°C
66.21mm
-
36mm
36 x 90 x 67mm
-
-
Screw
-10°C
90mm
-
-
-
-
-
-
-
-10 → +60°C
RS PRO Voltage Monitoring Relay, 3 Phase, DPDT, DIN Rail
RS Stock No.: 223-7789Brand: RS PRO

€ 213.51

Each (ex VAT)

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

€ 198.38

Each (ex VAT)

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

€ 189.60

Each (ex VAT)

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

€ 192.86

Each (ex VAT)

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

€ 97.76

Each (ex VAT)

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

€ 194.36

Each (ex 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

€ 174.93

Each (ex VAT)

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

€ 103.42

Each (ex VAT)

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

€ 112.81

Each (ex VAT)

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

€ 107.74

Each (ex VAT)

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

€ 198.60

Each (ex VAT)

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

€ 198.60

Each (ex VAT)

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

€ 145.78

Each (ex VAT)

Add to basket
RS Pro
Phase, Voltage
3
-
SPDT
-
Overvoltage, Undervoltage
-
DIN Rail
-
-
-
-
Phase Failure, Phase Sequence
0.2 → 10s
48 → 63Hz
-
-
L
+60°C
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
17.5mm
17.5 x 66.5 x 89mm
1
-
Screw
-20°C
89mm
-
-
-
-
-
-
-
+60°C
RS PRO Voltage Monitoring Relay, 1 Phase, SPDT, DIN Rail
RS Stock No.: 102-6131Brand: RS PRO

€ 112.36

Each (ex VAT)

Add to basket
RS Pro
Voltage
1
-
SPDT
-
Overvoltage, Undervoltage
-
DIN Rail
-
-
-
-
-
0.2 → 10s
48 → 63Hz
-
-
L
+60°C
66.5mm
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
17.5mm
17.5 x 66.5 x 89mm
1
-
Screw
-20°C
89mm
63Hz
-
-
48Hz
-
-
-
+60°C
Current Monitoring Relay, 1 Phase, DPDT, DIN Rail
RS Stock No.: 288-7658Brand: SelectronManufacturers Part No.: EMR DI22F

€ 600.65

Each (ex VAT)

Add to basket
Selectron
Current
1
-
DPDT
-
-
-
DIN Rail
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Monitoring Relay, 195 → 264V ac, Plug In
RS Stock No.: 129-771Brand: Phoenix ContactManufacturers Part No.: 2885294

€ 22.31

Each (ex VAT)

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

...