Signal Conditioners & Isolators

We offer three types of control relays from a range of brands including Phoenix Contact, ABB, Siemens and Omron.

If you're looking to control temperature, voltage, current or frequency, you'll find the products within monitoring relays. For all of your signal conditioning and conversion requirements, visit our signal conditioning range.

What is a control relay?

A control relay is basically an electrically operated switch.

How does a control relay work?

They work by opening and closing a switch to allow power to flow through a coil to conduct electricity. The coil does not actually come into contact with the switch during this process.

What types of control relays are available?

The three types of control relay are as follows:

  • Impulse relay - a type of latching relay that transfers the contacts with each pulse.
  • Monitoring relay - a protective control device for monitoring and receiving input signals, and outputting an alarm signal if a threshold is reached.
  • Signal conditioning - a device that converts one type of electronic signal into another type of signal.

What are the uses of a control relay panel?

Control relay panels are used for the control and monitoring of electrical equipment such as transformers, generators and circuit breakers in industrial systems and environments.

What is the function of an undervoltage control relay?

A relay will trip the breaker circuit if it detects an abnormality. An undervoltage (UV) relay will activate if the voltage is lower than a prescribed value, and stay like that until it reaches the necessary voltage.

Signal Conditioners
Signal Conditioners
Zener & Galvanic Barriers
Zener & Galvanic Barriers

979 Products showing for Signal Conditioners & Isolators

41 of 49
In Stock
ZDAUTO BOT Series Signal Conditioner, Digital Output, 3.3V Supply
  • RS Stock No. 666-090
  • Mfr. Part No. BOT03750D1b
Subtotal (1 bag of 25 units)
SGD161.88(exc. GST)
Stocked by manufacturer
Phoenix Contact MACX MCR Series Signal Conditioner, Current Input, Current Output, 19.2V dc, 30 V dc Supply, ATEX
  • RS Stock No. 195-4828
  • Mfr. Part No. 2905577
Subtotal (1 unit)
SGD336.38(exc. GST)
Stocked by manufacturer
Phoenix Contact MACX MCR Series Repeater Power Supply, Current Input, Current Output, 230V ac/dc, 24 V ac/dc Supply,
  • RS Stock No. 254-4813
  • Mfr. Part No. 2865968
Subtotal (1 unit)
SGD536.34(exc. GST)
Stocked by manufacturer
Phoenix Contact MACX MCR Series Isolation Amplifier, 30V Supply, ATEX
  • RS Stock No. 212-7322
  • Mfr. Part No. 2924252
Subtotal (1 unit)
SGD236.58(exc. GST)
Temporarily out of stock
Weidmüller ACT20P Series Signal Transducer, Current Input, Relay, Analogue Output, 31.2V Supply, DNV GL
  • RS Stock No. 287-5517
  • Mfr. Part No. 1510290000
Subtotal (1 unit)
SGD301.18(exc. GST)
In Stock
Kubler SP 2D-2D Series Signal Conditioner, RS422 Input, TTL, RS422, HTL Output, 12V dc, 30 V dc Supply
  • RS Stock No. 181-1094
  • Mfr. Part No. 8.SP.2D-2D
Subtotal (1 unit)
SGD646.15(exc. GST)
In Stock
Phoenix Contact MACX MCR Series Signal Conditioner, Current/Voltage Input, Relay Output, 24V dc Supply, ATEX
  • RS Stock No. 189-2316
  • Mfr. Part No. 2906169
Subtotal (1 unit)
SGD441.51(exc. GST)
In Stock
WAGO 857 Series Signal Conditioner, Current Input, Current/Voltage Output, 24V dc Supply, ATEX, IECEx
  • RS Stock No. 279-2529
  • Mfr. Part No. 857-550
Subtotal (1 unit)
SGD579.60(exc. GST)
In Stock
JM CONCEPT TELIS 9000 Series Universal Signal Converter, RTD, Resistance, Temperature, Thermocouple, Voltage, Current
  • RS Stock No. 268-0085
  • Mfr. Part No. TELIS9300U0
Subtotal (1 unit)
SGD552.34(exc. GST)
Stocked by manufacturer
Phoenix Contact 1 Channel Galvanic Barrier, Analogue, ATEX
  • RS Stock No. 751-1318
  • Mfr. Part No. 2924029
Subtotal (1 unit)
SGD665.22(exc. GST)
In Stock
JM CONCEPT ULCOS 600 Series Voltage Transducer, Voltage Input, Current, Relay, Voltage Output, 256V ac, 80 V ac Supply
  • RS Stock No. 266-3043
  • Mfr. Part No. ULCOS620V2
Subtotal (1 unit)
SGD365.94(exc. GST)
In Stock
Endress+Hauser RN22 Series Signal Conditioner
  • RS Stock No. 267-9453
  • Mfr. Part No. RN22-8L2A
Subtotal (1 unit)
SGD441.69(exc. GST)
In Stock
Phoenix Contact 3RS7003 Series Signal Conditioner, Current Input, Voltage Output, 24V dc Supply
  • RS Stock No. 622-3215
  • Mfr. Part No. 2813538
Subtotal (1 unit)
SGD381.31(exc. GST)
Temporarily out of stock
Eaton MTL Series Signal Conditioner, Voltage Input, Voltage Output, 20V dc, 35 V dc Supply, Zone 0, IIC, Group A, Div 1,
  • RS Stock No. 174-7910
  • Mfr. Part No. MTL5524
Subtotal (1 unit)
SGD507.15(exc. GST)
Stocked by manufacturer
Socomec 192Y Series Current Measuring Transducer, Current/Voltage Input, Digital Output, 230V Supply
  • RS Stock No. 253-3721
  • Mfr. Part No. 192Y3332
Subtotal (1 unit)
SGD1,488.23(exc. GST)
In Stock
Endress+Hauser 1 Channel Zener Barrier, Current, ATEX
  • RS Stock No. 316-259
  • Mfr. Part No. RN42-AA1AULA
Subtotal (1 unit)
SGD308.70(exc. GST)
Stocked by manufacturer
Siemens 3RS7005 Series Signal Conditioner, Current/Voltage Input, Frequency Output, 24V ac/dc, 240 V ac/dc Supply
  • RS Stock No. 134-8047
  • Mfr. Part No. 3RS7005-1KW00
Subtotal (1 unit)
SGD688.48(exc. GST)
In Stock
PR Electronics 9200 Series Pulse Isolator, Switch Input, Relay Output, 19.2V dc, 31.2 V dc Supply, ATEX
  • RS Stock No. 796-7054
  • Mfr. Part No. 9202B1B
Subtotal (1 unit)
SGD385.91(exc. GST)
Stocked by manufacturer
Siemens 3RS7006 Series Signal Conditioner, Current/Voltage Input, Current/Voltage Output, 24V ac/dc, 240 V ac/dc Supply
  • RS Stock No. 134-8055
  • Mfr. Part No. 3RS7006-2FW00
Subtotal (1 unit)
SGD728.43(exc. GST)
In Stock
Endress+Hauser RNF22 Series DIN Rail Power Supply, 24V dc Supply
  • RS Stock No. 256-6213
  • Mfr. Part No. RNF22-AAB
Subtotal (1 unit)
SGD173.02(exc. GST)
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