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Monitoring Relays

Monitoring relays are a type of relay that trips a circuit breaker when a fault is detected. A relay is an electrically controlled switch that is used to turn the power on or off in a circuit.

Monitoring relays are more sophisticated than regular relays, as they have adjustable operating conditions, whereas normal relays switch according to a fixed threshold. They measure a given p...

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GILGEN Muller & Weigert Earth Leakage Monitoring Relay, Single, Three Phase, SPDT
RS Stock No. 242-5416
Brand GILGEN Muller & Weigert
Manufacturers Part No. DACT-ELR-A Fehlerstrom-Relais 230V AC

$ 351.51

Each

Add to basket
GILGEN Muller & Weigert
Earth Leakage
SPDT
Overvoltage Protection, Undervoltage Protection
Single, Three
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Broyce Control DIN Rail Phase Monitoring Relay, 320 → 490V ac, 48 → 63Hz, 3 Phase
RS Stock No. 206-1444
Brand Broyce Control
Manufacturers Part No. LPPI

$ 50.46

Each

Add to basket
Broyce Control
Phase
-
-
3
320 → 490V ac
-
-
-
Phase Failure, Phase Sequence
-
-
-
L
48 → 63Hz
DIN Rail
-
Screw
59mm
-
-
-
-
490V ac/dc
-
89mm
+60°C
17.5mm
-20°C
-
+60°C
-
-
59 x 17.5 x 89mm
ABB DIN Rail Temperature Monitoring Relay, Maximum of 3.7mA, 1 Phase, DPDT
RS Stock No. 876-5033
Brand ABB
Manufacturers Part No. 1SVR730712R2200 CM-MSS.33S

$ 100.26

Each

Add to basket
ABB
Temperature
DPDT
-
1
-
-
-
-
-
<100ms
Overtemperature, Winding Temperature
-
CM-MSS
-
DIN Rail
-
Screw
103.7mm
-
-
-
-
-
1
85.6mm
+60°C
22.5mm
-25°C
Fail-Safe, Inbuilt PTC Sensor, Insufficient Cooling Protection, Manual & Automatic Reset, One Measuring Circuit, Over Heating Protection, Over Load Protection, Remote Reset, Short-Circuit Monitoring of the Sensor Circuit, Test and Reset Button
+60°C
Maximum of 3.7mA
-
103.7 x 22.5 x 85.6mm
RS PRO DIN Rail Phase Monitoring Relay, 3 Phase, SPDT
RS Stock No. 223-7795
Brand RS PRO

$ 79.50

Each

Add to basket
RS Pro
Phase
SPDT
Overvoltage Protection, Undervoltage Protection
3
-
-
-
-
-
-
-
-
-
-
DIN Rail
-
Screw
66.5mm
-
-
-
-
-
-
-
+60°C
90mm
-20°C
-
-20 → +60°C
-
-
17.5 x 90 x 66.5mm
RS PRO DIN Rail Phase Monitoring Relay, 3 Phase, SPDT
RS Stock No. 223-7794
Brand RS PRO

$ 105.97

Each

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

$ 91.49

Each

Add to basket
RS Pro
Phase
SPDT
Overvoltage Protection, Undervoltage Protection
3
-
-
-
-
-
-
-
-
-
-
DIN Rail
-
Screw
66.5mm
-
-
-
-
-
-
-
+60°C
90mm
-20°C
-
-20 → +60°C
-
-
17.5 x 90 x 66.5mm
RS PRO DIN Rail Phase Voltage Monitoring Relay, 3 Phase, 2CO
RS Stock No. 223-7790
Brand RS PRO

$ 133.56

Each

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

$ 124.67

Each

Add to basket
RS Pro
Phase Voltage
2CO
Overvoltage Protection, Undervoltage Protection
3
-
-
-
-
-
2 → 999s
-
-
-
-
DIN Rail
-
Screw
66.21mm
-
-
-
-
-
-
-
+60°C
36mm
-10°C
-
-10 → +60°C
-
-
36 x 90 x 67mm
ABB DIN Rail Temperature Monitoring Relay, Maximum of 3.7mA, DPDT
RS Stock No. 876-5014
Brand ABB
Manufacturers Part No. 1SVR730700R0200 CM-MSS.22S

$ 94.74

Each

Add to basket
ABB
Temperature
DPDT
-
-
-
-
-
-
-
<100ms
Overtemperature, Winding Temperature
-
CM-MSS
-
DIN Rail
-
Screw
103.7mm
-
-
-
-
-
1
85.6mm
+60°C
22.5mm
-25°C
Fail-Safe, Inbuilt PTC Sensor, Insufficient Cooling Protection, Manual & Automatic Reset, Non-Volatile Fault Storage, One Measuring Circuit, Over Heating Protection, Over Load Protection, Remote Reset, Short-Circuit Monitoring of the Sensor Circuit
+60°C
Maximum of 3.7mA
-
103.7 x 22.5 x 85.6mm
RS PRO DIN Rail Phase, Voltage Monitoring Relay, 3 Phase, 1CO
RS Stock No. 223-7788
Brand RS PRO

$ 115.71

Each

Add to basket
RS Pro
Phase, Voltage
1CO
Overvoltage Protection, Undervoltage Protection
3
-
-
-
-
-
2 → 999s
-
-
-
-
DIN Rail
-
Screw
66.21mm
-
-
-
-
-
-
-
+60°C
36mm
-10°C
-
-10 → +60°C
-
-
36 x 90 x 67mm
RS PRO DIN Rail Phase Monitoring Relay, 3 Phase, SPDT
RS Stock No. 223-7791
Brand RS PRO

$ 87.78

Each

Add to basket
RS Pro
Phase
SPDT
Overvoltage Protection, Undervoltage Protection
3
-
-
-
-
-
-
-
-
-
-
DIN Rail
-
Screw
66.5mm
-
-
-
-
-
-
-
+60°C
90mm
-20°C
-
-20 → +60°C
-
-
17.5 x 90 x 66.5mm
ABB DIN Rail Temperature Monitoring Relay, Maximum of 3.7mA, SPDT
RS Stock No. 876-4998
Brand ABB
Manufacturers Part No. 1SVR730700R0100 CM-MSS.12S

$ 87.53

Each

Add to basket
ABB
Temperature
SPDT
-
-
-
-
-
-
-
<100ms
Overtemperature, Winding Temperature
-
CM-MSS
-
DIN Rail
-
Screw
103.7mm
-
-
-
-
-
1
85.6mm
+60°C
22.5mm
-25°C
Automatic Reset, Fail-Safe, Inbuilt PTC Sensor, Insufficient Cooling Protection, One Measuring Circuit, Over Heating Protection, Over Load Protection
+60°C
Maximum of 3.7mA
-
103.7 x 22.5 x 85.6mm
Broyce Control DIN Rail Phase, Voltage Electric Vehicle Monitoring Relay, 1 Phase, SPDT
RS Stock No. 222-6842
Brand Broyce Control
Manufacturers Part No. LXCVR-EV 230VAC

$ 69.06

Each

Add to basket
Broyce Control
Phase, Voltage
SPDT
Overvoltage, Undervoltage
1
-
-
-
-
Single Phase
4s
-
-
L
-
DIN Rail
-
Screw
66.5mm
-
-
-
-
-
1
-
+60°C
17.5mm
-20°C
Fixed Trip Levels and Time Delay
-20 → +60°C
-
-
17.5 x 89 x 66.5mm
RS PRO DIN Rail Voltage Monitoring Relay, 243 → 540 V, 3 Phase, DPDT
RS Stock No. 225-7385
Brand RS PRO

$ 113.32

Each

Add to basket
RS Pro
Voltage
DPDT
Undervoltage
3
243 → 540 V
-
-
-
Phase Asymmetry, Phase Failure, Phase Sequence
0.2 → 10s
-
-
-
-
DIN Rail
-
Screw
89mm
-
540V
-
-
243 V
-
66.5mm
+60°C
17.5mm
-20°C
Microprocessor Based, Detects Incorrect Phase Sequence, Phase Loss And Neutral Loss, Adjustment For Asymmetry Trip Level, Adjustment For Time Delay, Green Led Indication For Supply Status
-20 → +60°C
-
-
89 x 17.5 x 66.5mm
Eaton DIN Rail Insulation Monitoring Relay, 0 → 250 V ac, 0 → 300V dc, 3 Phase
RS Stock No. 179-3538
Brand Eaton
Manufacturers Part No. 184772 EMR6-R250-A-1

$ 334.44

Each

Add to basket
Eaton
Insulation
-
-
3
0 → 250 V ac, 0 → 300V dc
-
-
-
-
-
-
-
EMR6
-
DIN Rail
-
Screw
109.5mm
-
250 V ac, 300V dc
-
-
0V ac/dc
-
78mm
+60°C
22.5mm
-25°C
-
+60°C
-
-
109.5 x 22.5 x 78mm
ABB DIN Rail Voltage Monitoring Relay, 1 Phase, DPDT
RS Stock No. 775-7930
Brand ABB
Manufacturers Part No. 1SVR730750R0400 CM-EFS.2S

$ 272.02

Each

Add to basket
ABB
Voltage
DPDT
Overvoltage, Undervoltage
1
-
-
-
-
-
0 s, 0.1 → 30s
-
-
CM-EFS
-
DIN Rail
-
Screw
103.7mm
-
30 V, 60 V, 300 V, 600V
-
-
-
-
85.6mm
+60°C
22.5mm
-20°C
-
+60°C
-
-
103.7 x 22.5 x 85.6mm
ABB DIN Rail Insulation Monitoring Relay, 0 → 250 V ac, 0 → 300V dc, 1, 3 Phase, SPDT
RS Stock No. 806-5910
Brand ABB
Manufacturers Part No. 1SVR730660R0100 CM-IWS.1S

$ 348.76

Each

Add to basket
ABB
Insulation
SPDT
-
1, 3
0 → 250 V ac, 0 → 300V dc
-
-
-
-
-
-
-
CM-IWS
-
DIN Rail
-
Screw
103.7mm
-
250 V ac, 300V dc
-
-
0V ac/dc
-
85.6mm
-
22.5mm
-
-
-
-
-
103.7 x 22.5 x 85.6mm
ABB DIN Rail Voltage Monitoring Relay, 3→30 V, 6→60 V, 30→300 V, 60→600 V, 1 Phase, DPDT
RS Stock No. 775-7955
Brand ABB
Manufacturers Part No. 1SVR730830R0400 CM-ESS.2S

$ 250.90

Each

Add to basket
ABB
Voltage
DPDT
Overvoltage, Undervoltage
1
3→30 V, 6→60 V, 30→300 V, 60→600 V
-
-
-
-
0 s, 0.1 → 30s
-
-
CM-ESS
-
DIN Rail
-
Screw
103.7mm
-
30 V, 60 V, 300 V, 600V
-
-
-
-
85.6mm
+60°C
22.5mm
-20°C
-
+60°C
-
-
103.7 x 22.5 x 85.6mm
ABB DIN Rail Temperature Monitoring Relay, 45 → 65Hz, 0 → +100°C, 3 Phase, SPDT
RS Stock No. 876-5783
Brand ABB
Manufacturers Part No. 1SVR730740R9200 CM-TCS.22S

$ 238.53

Each

Add to basket
ABB
Temperature
SPDT
-
3
-
-
-
-
-
20ms
Overtemperature, Temperature Window Monitoring, Undertemperature
0 → +100°C
CM-TCS
45 → 65Hz
DIN Rail
-
Screw
103.7mm
+100°C
-
0°C
45Hz
-
1
85.6mm
+60°C
22.5mm
-40°C
12 LEDs for the Indication of Operational States, All Configurations and Adjustments by Front-Face Operating Elements, Hysteresis 2-20 % Adjustable, One or Two Threshold Values, Precise Adjustment With Direct Reading Scales
+60°C
-
-
103.7 x 22.5 x 85.6mm
Eaton DIN Rail Phase, Voltage Monitoring Relay, 300 → 500V ac, 50 → 60Hz
RS Stock No. 179-3547
Brand Eaton
Manufacturers Part No. 184779 EMR6-W500-D-1

$ 258.16

Each

Add to basket
Eaton
Phase, Voltage
-
Overvoltage, Undervoltage
-
300 → 500V ac
-
-
-
Phase Failure, Phase Sequence
0.1 → 30s
-
-
EMR6
50 → 60Hz
DIN Rail
-
Screw
109.5mm
-
500V ac
-
50Hz
300V ac
-
78mm
+60°C
22.5mm
-25°C
-
+60°C
-
-
109.5 x 22.5 x 78mm

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