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 1162 products

Filter

Sort

Filter

Sort

EGP 10,012.09

EGP 10,012.09 Each (ex VAT)

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

EGP 12,340.18

EGP 12,340.18 Each (ex VAT)

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

EGP 11,520.23

EGP 11,520.23 Each (ex VAT)

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

EGP 10,709.59

EGP 10,709.59 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
-
-
-
-
-
45Hz
+60°C
-
36mm
-
65Hz
-
-
-
36 x 90 x 67mm
66.21mm
-
-
-
-10 → +60°C
-10°C
Screw
RS PRO Phase Monitoring Relay, 3 Phase, SPDT, DIN Rail
RS Stock No.: 223-7791Brand: RS PRO

EGP 10,193.42

EGP 10,193.42 Each (ex VAT)

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

EGP 10,341.02

EGP 10,341.02 Each (ex 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
-
-
-
-
-
-
+60°C
66.5mm
17.5mm
540V
-
-
243 V
-
89 x 17.5 x 66.5mm
89mm
-
Microprocessor Based, Detects Incorrect Phase Sequence, Phase Loss And Neutral Loss, Adjustment For Under Voltage Trip Level, Adjustment For Time Delay
-
-20 → +60°C
-20°C
Screw
RS PRO Phase Monitoring Relay, 3 Phase, DIN Rail, Surface Mount
RS Stock No.: 225-7384Brand: RS PRO

EGP 5,244.24

EGP 5,244.24 Each (ex VAT)

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

EGP 10,443.37

EGP 10,443.37 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

EGP 9,389.88

EGP 9,389.88 Each (ex VAT)

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

EGP 5,581.75

EGP 5,581.75 Each (ex VAT)

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

EGP 6,086.09

EGP 6,086.09 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
1
-
+60°C
89mm
17.5mm
-
-
-
-
-
17.5 x 66.5 x 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
-
+60°C
-20°C
Screw

EGP 5,819.57

EGP 5,819.57 Each (ex 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
1
-
+60°C
89mm
17.5mm
280V
-
-
-
-
17.5 x 66.5 x 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
-
+60°C
-20°C
Screw

EGP 10,646.73

EGP 10,646.73 Each (ex VAT)

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

EGP 10,646.73

EGP 10,646.73 Each (ex VAT)

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

EGP 7,839.44

EGP 7,839.44 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
1
-
+60°C
89mm
17.5mm
-
-
-
-
-
17.5 x 66.5 x 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
-
+60°C
-20°C
Screw
RS PRO Voltage Monitoring Relay, 1 Phase, SPDT, DIN Rail
RS Stock No.: 102-6131Brand: RS PRO

EGP 6,062.27

EGP 6,062.27 Each (ex VAT)

Add to basket
RS Pro
Voltage
1
SPDT
-
Overvoltage, Undervoltage
-
-
DIN Rail
-
-
-
-
-
0.2 → 10s
48 → 63Hz
-
-
L
1
63Hz
+60°C
89mm
17.5mm
-
48Hz
-
-
-
17.5 x 66.5 x 89mm
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
-
+60°C
-20°C
Screw
ATC Frequency, Phase, Voltage Monitoring Relay, 2 Phase, SPDT, 300 → 600V ac, DIN Rail
RS Stock No.: 286-817Brand: ATCManufacturers Part No.: DPR350C

EGP 19,144.77

EGP 19,144.77 Each (ex VAT)

Add to basket
ATC
Frequency, Phase, Voltage
2
SPDT
300 → 600V ac
Frequency, Overvoltage, Phase Asymmetry, Phase Failure, Phase Sequence, Undervoltage
-
-
DIN Rail
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
ATC Phase, Voltage Monitoring Relay, 3 Phase, SPDT
RS Stock No.: 286-818Brand: ATCManufacturers Part No.: SLU0200

EGP 17,163.06

EGP 17,163.06 Each (ex VAT)

Add to basket
ATC
Phase, Voltage
3
SPDT
-
Phase Sequence
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
ATC Phase, Voltage Monitoring Relay, 3 Phase, SPDT, 236 → 290V ac, DIN Rail
RS Stock No.: 286-815Brand: ATCManufacturers Part No.: DPR175A

EGP 11,905.95

EGP 11,905.95 Each (ex VAT)

Add to basket
ATC
Phase, Voltage
3
SPDT
236 → 290V ac
Overvoltage, Undervoltage
-
-
DIN Rail
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
ATC Phase, Voltage Monitoring Relay, 3 Phase, SPDT, DIN Rail
RS Stock No.: 286-820Brand: ATCManufacturers Part No.: SLU0201

EGP 15,899.99

EGP 15,899.99 Each (ex VAT)

Add to basket
ATC
Phase, Voltage
3
SPDT
-
Overvoltage, Undervoltage
-
-
DIN Rail
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-

...