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 Monitoring Relay, 1 Phase, 120/300 V Monitor Range, SPST, DIN Rail, 230V ac
RS PRO Monitoring Relay, 1 Phase, 120/300 V Monitor Range, SPST, DIN Rail, 230V ac
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RS Stock No.: 434-521Brand: RS PROHSN Code: 85364900

SR 322.00

SR 322.00 Each (ex VAT)

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1SR 322.00
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RS Pro
Monitoring Relay
-
1
-
Undervoltage Monitoring
-
SPST
-
-
-
DIN Rail
-
-
-
-
-
-
-
-
-
IP20
-
-20°C
-
-
-
-
-
-
120/300 V
230V ac
-
-
55°C
-
CE-UKCA ROHS-3
-
52.9mm
67.5mm
90.3mm
-
-
-
-
-
-
-
-
-
RS PRO Monitoring Relay, 1 Phase, DIN Rail
RS PRO Monitoring Relay, 1 Phase, DIN Rail
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RS Stock No.: 132-171Brand: RS PROHSN Code: 85364900

SR 166.75

SR 166.75 Each (ex VAT)

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1

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1SR 166.75
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RS Pro
Monitoring Relay
-
1
-
-
-
-
-
-
-
DIN Rail
-
-
-
-
-
-
-
-
2 s
-
-
-20°C
-
-
-
-
-
-
-
-
-
-
55°C
-
No
-
90mm
23mm
-
SSR
-
-
-
-
-
-
-
-
RS PRO Monitoring Relay, 1 Phase, DIN Rail
RS PRO Monitoring Relay, 1 Phase, DIN Rail
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RS Stock No.: 132-174Brand: RS PROHSN Code: 85364900

SR 172.50

SR 172.50 Each (ex VAT)

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1SR 172.50
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RS Pro
Monitoring Relay
-
1
-
-
-
-
-
-
-
DIN Rail
-
-
-
-
-
-
-
-
-
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-
-
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-
-
-
-
-
-
-
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No
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-
-
-
-
-
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-
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-
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-
-
RS PRO Monitoring Relay, 1 Phase, DIN Rail, 220V ac
RS PRO Monitoring Relay, 1 Phase, DIN Rail, 220V ac
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RS Stock No.: 122-210Brand: RS PROHSN Code: 85364900

SR 126.50

SR 126.50 Each (ex VAT)

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1

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1SR 126.50
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RS Pro
Monitoring Relay
-
1
-
Undervoltage Monitoring
-
-
-
-
-
DIN Rail
-
6VA
250V ac
-
-
-
-
-
-
IP20
-
-20°C
5A
-
-
-
-
-
-
220V ac
-
-
55°C
-
2006/95/EC - 2004/108/EC
-
94.6mm
35.6mm
-
GKM
-
-
-
-
-
-
-
-
RS PRO Monitoring Relay, 1 Phase, DIN Rail, 220V ac
RS PRO Monitoring Relay, 1 Phase, DIN Rail, 220V ac
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RS Stock No.: 122-215Brand: RS PROHSN Code: 85364900

SR 166.75

SR 166.75 Each (ex VAT)

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1

Available in multiples of 1
1SR 166.75
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RS Pro
Monitoring Relay
-
1
-
Undervoltage Monitoring
-
-
-
-
-
DIN Rail
-
6VA
250V ac
-
-
-
-
-
-
IP20
-
-20°C
5A
-
-
-
-
-
-
220V ac
-
-
55°C
-
2006/95/EC - 2004/108/EC
-
9mm
35.4mm
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DKG
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-
-
-
-
-
-
-
RS PRO Monitoring Relay, 3 Phase, 150/260 V ac Monitor Range, DIN Rail, 150V ac, 260 V ac
RS PRO Monitoring Relay, 3 Phase, 150/260 V ac Monitor Range, DIN Rail, 150V ac, 260 V ac
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RS Stock No.: 122-217Brand: RS PROHSN Code: 85364900

SR 81.65

SR 81.65 Each (ex VAT)

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1

Available in multiples of 1
1SR 81.65
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RS Pro
Monitoring Relay
-
3
-
Plug
-
-
-
-
-
DIN Rail
-
-
-
-
-
-
-
-
-
-
-
-20°C
-
-
-
-
-
-
150/260 V ac
150, 260V ac
-
-
55°C
-
2006/95/EC - 2004/108/EC
-
95mm
23mm
6mm
FKV
-
-
-
-
-
-
-
-
RS PRO Monitoring Relay, 3 Phase, 230/460 V Monitor Range, SPDT, DIN Rail, 380V ac
RS PRO Monitoring Relay, 3 Phase, 230/460 V Monitor Range, SPDT, DIN Rail, 380V ac
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RS Stock No.: 434-520Brand: RS PROHSN Code: 85364900

SR 257.60

SR 257.60 Each (ex VAT)

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1

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1SR 257.60
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RS Pro
Monitoring Relay
-
3
-
Undervoltage Monitoring
-
SPDT
-
-
-
DIN Rail
-
-
-
-
-
-
-
-
-
IP20
-
-20°C
-
-
-
-
-
-
230/460 V
380V ac
-
-
55°C
-
ROHS-3, CE-UKCA
-
44mm
84.5mm
75mm
-
-
-
-
-
-
-
-
-
RS PRO Monitoring Relay, 3 Phase, 380 V ac Monitor Range, DIN Rail, 380V ac
RS PRO Monitoring Relay, 3 Phase, 380 V ac Monitor Range, DIN Rail, 380V ac
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RS Stock No.: 122-216Brand: RS PROHSN Code: 85364900

SR 110.40

SR 110.40 Each (ex VAT)

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1

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1SR 110.40
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RS Pro
Monitoring Relay
-
3
-
Plug
-
-
-
-
-
DIN Rail
-
4VA
250V ac
-
-
-
-
-
-
IP20
-
-20°C
5A
-
-
-
-
-
380 V ac
380V ac
-
-
55°C
-
2006/95/EC - 2004/108/EC
-
95mm
23mm
-
FKV
-
-
-
-
-
-
-
-
RS PRO Monitoring Relay, 3 Phase, DIN Rail
RS PRO Monitoring Relay, 3 Phase, DIN Rail
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RS Stock No.: 132-173Brand: RS PROHSN Code: 85364900

SR 138.00

SR 138.00 Each (ex VAT)

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1

Available in multiples of 1
1SR 138.00
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RS Pro
Monitoring Relay
-
3
-
-
-
-
-
-
-
DIN Rail
-
-
-
-
-
-
-
-
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-
-
-
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-
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No
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-
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-
-
RS PRO Monitoring Relay, 3 Phase, DIN Rail
RS PRO Monitoring Relay, 3 Phase, DIN Rail
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RS Stock No.: 132-172Brand: RS PROHSN Code: 85364900

SR 110.40

SR 110.40 Each (ex VAT)

Check stock

1

Available in multiples of 1
1SR 110.40
Add to basket
RS Pro
Monitoring Relay
-
3
-
-
-
-
-
-
-
DIN Rail
-
-
-
-
-
-
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No
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RS PRO Monitoring Relay, 3 Phase, DIN Rail, 380V ac
RS PRO Monitoring Relay, 3 Phase, DIN Rail, 380V ac
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RS Stock No.: 122-212Brand: RS PROHSN Code: 85364900

SR 148.35

SR 148.35 Each (ex VAT)

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1

Available in multiples of 1
1SR 148.35
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RS Pro
Monitoring Relay
-
3
-
-
-
-
-
-
-
DIN Rail
-
6VA
250V ac
-
-
-
-
-
-
IP20
-
-20°C
5A
-
-
-
-
-
-
380V ac
-
-
55°C
-
2006/95/EC - 2004/108/EC
-
94.6mm
35.4mm
-
GKT
-
-
-
-
-
-
-
-
RS PRO Monitoring Relay, 3 Phase, SPDT, DIN Rail, 5A to 100A, 150V ac, 260 V ac
RS PRO Monitoring Relay, 3 Phase, SPDT, DIN Rail, 5A to 100A, 150V ac, 260 V ac
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RS Stock No.: 434-506Brand: RS PROHSN Code: 85364900

SR 362.25

SR 362.25 Each (ex VAT)

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1

Available in multiples of 1
1SR 362.25
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RS Pro
Monitoring Relay
-
3
-
-
-
SPDT
-
-
-
DIN Rail
5A
-
-
100A
Overcurrent
-
-
-
0.1 to 20 s
IP20
-
-20°C
-
-
-
-
-
-
-
150, 260V ac
-
-
55°C
-
ROHS-3, CE-UKCA
-
44mm
84.5mm
75mm
-
-
-
-
-
-
-
-
-
RS PRO Phase/Voltage Monitoring Relays, 1 Phase, 150 to 300 V ac Monitor Range, 1 x 8A CO Relay Output, DIN Rail, 230V
RS PRO Phase/Voltage Monitoring Relays, 1 Phase, 150 to 300 V ac Monitor Range, 1 x 8A CO Relay Output, DIN Rail, 230V
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RS Stock No.: 558-901Brand: RS PROHSN Code: 85364900

SR 310.50

SR 310.50 Each (ex VAT)

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1

Available in multiples of 1
1SR 310.50
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RS Pro
Phase/Voltage Monitoring Relays
-
1
-
Undervoltage Monitoring
-
1 x 8A CO Relay Output
-
-
-
DIN Rail
-
6VA
-
-
-
-
Screw
-
-
IP40, IP20
-
-5°C
8A
-
-
-
-
-
150 to 300 V ac
230V ac
270 V dc
-
55°C
-
EC 60529, EC 60255-3, EC 60870-5, EC 60255-6
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59mm
36mm
90mm
-
-
-
-
-
-
-
-
-
RS PRO Phase/Voltage Monitoring Relays, 1 Phase, 150 to 300 V ac Monitor Range, DIN Rail, 230V ac 270 V dc
RS PRO Phase/Voltage Monitoring Relays, 1 Phase, 150 to 300 V ac Monitor Range, DIN Rail, 230V ac 270 V dc
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RS Stock No.: 558-898Brand: RS PROHSN Code: 85364900

SR 311.65

SR 311.65 Each (ex VAT)

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1

Available in multiples of 1
1SR 311.65
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RS Pro
Phase/Voltage Monitoring Relays
-
1
-
Undervoltage Monitoring
-
-
-
-
-
DIN Rail
-
2W
-
-
-
-
Screw
-
-
IP40, IP20
-
-5°C
8A
-
-
-
-
-
150 to 300 V ac
230V ac
270 V dc
-
55°C
-
EC 60255-6, EC 60255-3, EC 60529, EC 60870-5
-
59.7mm
36mm
90mm
-
-
-
-
-
-
-
-
-
RS PRO Phase/Voltage Monitoring Relays, 3 Phase, 230 V ac Monitor Range, 1 CO, DIN Rail, 230V ac
RS PRO Phase/Voltage Monitoring Relays, 3 Phase, 230 V ac Monitor Range, 1 CO, DIN Rail, 230V ac
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RS Stock No.: 558-897Brand: RS PROHSN Code: 85364900

SR 227.70

SR 227.70 Each (ex VAT)

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1

Available in multiples of 1
1SR 227.70
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RS Pro
Phase/Voltage Monitoring Relays
-
3
-
Plug, Transducer
-
1 CO
-
-
-
DIN Rail
-
-
-
-
-
-
Screw
-
-
-
-
-5°C
8A
-
-
-
-
-
230 V ac
230V ac
-
-
55°C
-
No
-
58mm
35mm
90mm
-
-
-
-
-
-
-
-
-
RS PRO Phase/Voltage Monitoring Relays, 3 Phase, 380 V ac Monitor Range, 1 CO, DIN Rail, 230V ac
RS PRO Phase/Voltage Monitoring Relays, 3 Phase, 380 V ac Monitor Range, 1 CO, DIN Rail, 230V ac
Add to parts list
RS Stock No.: 558-892Brand: RS PROHSN Code: 85364900

SR 261.05

SR 261.05 Each (ex VAT)

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1

Available in multiples of 1
1SR 261.05
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RS Pro
Phase/Voltage Monitoring Relays
-
3
-
Plug
-
1 CO
-
-
-
DIN Rail
-
-
-
-
-
-
Screw
-
-
-
-
-5°C
8A
-
-
-
-
-
380 V ac
230V ac
-
-
55°C
-
No
-
58mm
35mm
90mm
MKC-03
-
-
-
-
-
-
-
-
RS PRO Monitoring Relay, 1 Phase, SPDT, DIN Rail 24 V dc
RS PRO Monitoring Relay, 1 Phase, SPDT, DIN Rail 24 V dc
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RS Stock No.: 102-6130Brand: RS PROHSN Code: 85364900

SR 462.30

SR 462.30 Each (ex VAT)

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1

Available in multiples of 1
1SR 462.30
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RS Pro
Monitoring Relay
-
1
-
-
-
SPDT
-
-
-
DIN Rail
-
3W
-
-
-
-
Screw
-
-
IP20
-
-20°C
8A
-
-
-
-
-
-
-
24 V dc
-
60°C
-
RoHS, UL, CE, IEC, EMC EN 61000-6
-
66.5mm
17.5mm
89mm
L
-
-
-
-
-
-
-
-
RS PRO Monitoring Relay, 3 Phase, 280/520 V ac Monitor Range, SPDT, DIN Rail, 280V ac, 520 V ac
RS PRO Monitoring Relay, 3 Phase, 280/520 V ac Monitor Range, SPDT, DIN Rail, 280V ac, 520 V ac
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RS Stock No.: 102-6136Brand: RS PROHSN Code: 85364900

SR 504.85

SR 504.85 Each (ex VAT)

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1SR 504.85
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RS Pro
Monitoring Relay
-
3
-
-
-
SPDT
-
-
-
DIN Rail
-
8VA
-
-
-
-
Screw
-
-
-
-
-20°C
8A
-
-
-
-
-
280/520 V ac
280, 520V ac
-
-
60°C
-
RoHS, EN 61000-6-4, cUL, IEC 60664
-
66.5mm
17.5mm
89mm
L
-
-
-
-
-
-
-
-
RS PRO Monitoring Relay, 3 Phase, 120/240 V ac Monitor Range, SPDT, DIN Rail, 223V ac, 7795 V ac
RS PRO Monitoring Relay, 3 Phase, 120/240 V ac Monitor Range, SPDT, DIN Rail, 223V ac, 7795 V ac
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RS Stock No.: 223-7795Brand: RS PROHSN Code: 85364900

SR 831.45

SR 831.45 Each (ex VAT)

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1

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1SR 831.45
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RS Pro
Monitoring Relay
-
3
-
Undervoltage Monitoring
-
SPDT
-
-
-
DIN Rail
-
16VA
-
-
-
-
Screw
-
-
IP20, IP30
-
-20°C
3A
-
-
-
-
-
120/240 V ac
223, 7795V ac
-
-
60°C
-
No
-
66.5mm
90mm
90mm
MAG0
-
-
-
-
-
-
-
-
RS PRO Phase/Voltage Monitoring Relays, 3 Phase, SPDT, DIN Rail, 415 V ac
RS PRO Phase/Voltage Monitoring Relays, 3 Phase, SPDT, DIN Rail, 415 V ac
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RS Stock No.: 223-7792Brand: RS PROHSN Code: 85364900

SR 726.80

SR 726.80 Each (ex VAT)

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1

Available in multiples of 1
1SR 726.80
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RS Pro
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-
-
-
-
-
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